/* =====================================================================
   MiniKanban — Design System (Neutral / Zinc + Blue Accent)
   Flat, border-first, token-driven, light + dark. Bootstrap 5 overlay.
   ===================================================================== */

/* ---------------- Design Tokens (Light, default) ---------------- */
:root {
  /* Brand / semantic colors */
  --color-primary: #2563eb;           /* blue-600 */
  --color-primary-hover: #1d4ed8;     /* blue-700 */
  --color-primary-soft: #eff6ff;      /* blue-50 */
  --color-on-primary: #ffffff;
  --color-secondary: #71717a;         /* zinc-500 */
  --color-secondary-soft: #f4f4f5;    /* zinc-100 */
  --color-accent: #b45309;            /* amber-700 (due soon text) */
  --color-accent-soft: #fef3c7;       /* amber-100 */
  --color-success: #15803d;           /* green-700 */
  --color-success-soft: #dcfce7;      /* green-100 */
  --color-danger: #dc2626;            /* red-600 */
  --color-danger-hover: #b91c1c;      /* red-700 */
  --color-danger-soft: #fee2e2;       /* red-100 */
  --color-info: #0284c7;              /* sky-600 */

  /* Surfaces & text */
  --color-bg: #fafafa;                /* zinc-50 */
  --color-surface: #ffffff;
  --color-surface-2: #f4f4f5;         /* zinc-100 */
  --color-muted: #f4f4f5;
  --color-border: #e4e4e7;            /* zinc-200 */
  --color-border-strong: #d4d4d8;     /* zinc-300 */
  --color-text: #18181b;              /* zinc-900 */
  --color-text-muted: #52525b;        /* zinc-600 (>= 4.5:1 on surface) */
  --color-text-subtle: #a1a1aa;       /* zinc-400 */
  --color-ring: #2563eb;
  --focus-ring: 0 0 0 3px rgba(37, 99, 235, 0.22);

  /* Layering: board canvas < column < card */
  --color-column: #f4f4f5;            /* column surface */
  --color-raised: #ffffff;            /* cards on top of columns */

  /* Spacing scale (4/8 rhythm) */
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 20px;
  --space-6: 24px;
  --space-8: 32px;
  --space-10: 40px;
  --space-12: 48px;

  /* Radius */
  --radius-sm: 6px;
  --radius-md: 8px;
  --radius-lg: 10px;
  --radius-xl: 14px;
  --radius-full: 9999px;

  /* Shadows (sparingly: floating layers only) */
  --shadow-xs: 0 1px 2px rgba(9, 9, 11, 0.05);
  --shadow-sm: 0 1px 2px rgba(9, 9, 11, 0.06);
  --shadow-md: 0 4px 12px rgba(9, 9, 11, 0.08), 0 1px 3px rgba(9, 9, 11, 0.05);
  --shadow-lg: 0 16px 40px rgba(9, 9, 11, 0.14), 0 4px 10px rgba(9, 9, 11, 0.06);

  /* z-index scale */
  --z-dropdown: 1000;
  --z-sticky: 1020;
  --z-fixed: 1030;
  --z-modal-backdrop: 1040;
  --z-modal: 1050;
  --z-toast: 1080;
  --z-autocomplete: 10000;

  /* Typography */
  --font-sans: "Plus Jakarta Sans", system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  --fs-xs: 12px;
  --fs-sm: 13px;
  --fs-base: 14px;
  --fs-md: 16px;
  --fs-lg: 18px;
  --fs-xl: 20px;
  --fs-2xl: 24px;
  --fs-3xl: 30px;

  /* Motion */
  --transition-fast: 120ms ease-out;
  --transition-base: 180ms ease-out;
  --transition-slow: 280ms ease-out;

  /* Bootstrap variable bridge */
  --bs-primary: var(--color-primary);
  --bs-body-bg: var(--color-bg);
  --bs-body-color: var(--color-text);
  --bs-border-color: var(--color-border);
  --bs-link-color: var(--color-primary);
  --bs-link-hover-color: var(--color-primary-hover);
  --bs-primary-rgb: 37, 99, 235;
  --bs-border-radius-sm: var(--radius-sm);
  --bs-border-radius: var(--radius-md);
  --bs-border-radius-lg: var(--radius-lg);
}

/* ---------------- Design Tokens (Dark) ---------------- */
html.theme-dark {
  --color-primary: #3b82f6;           /* blue-500 */
  --color-primary-hover: #60a5fa;     /* blue-400 */
  --color-primary-soft: rgba(59, 130, 246, 0.16);
  --color-on-primary: #ffffff;
  --color-secondary: #a1a1aa;         /* zinc-400 */
  --color-secondary-soft: #1e1e22;
  --color-accent: #fbbf24;            /* amber-400 */
  --color-accent-soft: rgba(251, 191, 36, 0.14);
  --color-success: #4ade80;           /* green-400 */
  --color-success-soft: rgba(74, 222, 128, 0.14);
  --color-danger: #f87171;            /* red-400 */
  --color-danger-hover: #fca5a5;      /* red-300 */
  --color-danger-soft: rgba(248, 113, 113, 0.14);
  --color-info: #38bdf8;              /* sky-400 */

  --color-bg: #0f0f11;
  --color-surface: #17171a;
  --color-surface-2: #1e1e22;
  --color-muted: #1e1e22;
  --color-border: #26262b;
  --color-border-strong: #3a3a41;
  --color-text: #f4f4f5;              /* zinc-100 */
  --color-text-muted: #a1a1aa;        /* zinc-400 */
  --color-text-subtle: #71717a;       /* zinc-500 */
  --color-ring: #3b82f6;
  --focus-ring: 0 0 0 3px rgba(59, 130, 246, 0.32);

  --color-column: #17171a;            /* column = surface */
  --color-raised: #1e1e22;            /* cards slightly lighter */

  --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.35);
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.4);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.45), 0 1px 3px rgba(0, 0, 0, 0.35);
  --shadow-lg: 0 16px 40px rgba(0, 0, 0, 0.55), 0 4px 10px rgba(0, 0, 0, 0.4);
}

/* ---------------- Base ---------------- */
html { font-size: 16px; }

body {
  font-family: var(--font-sans);
  font-size: 0.875rem;
  background-color: var(--color-bg);
  color: var(--color-text);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  display: flex;
  flex-direction: column;
  min-height: 100dvh;
}

::selection { background: rgba(37, 99, 235, 0.18); }
html.theme-dark ::selection { background: rgba(59, 130, 246, 0.32); }

h1, h2, h3, h4, h5, h6 { color: var(--color-text); font-weight: 700; letter-spacing: -0.015em; }

a { color: var(--color-primary); text-decoration: none; }
a:hover { color: var(--color-primary-hover); }

.text-muted { color: var(--color-text-muted) !important; font-size: var(--fs-sm); }
.tabular-nums { font-variant-numeric: tabular-nums; }

/* Skip link for keyboard users */
.skip-link {
  position: absolute; left: -9999px; top: 0; z-index: 9999;
  background: var(--color-primary); color: var(--color-on-primary);
  padding: var(--space-2) var(--space-4); border-radius: var(--radius-md);
}
.skip-link:focus { left: var(--space-3); top: var(--space-3); }

/* App main regions */
.app-main { flex: 1 0 auto; width: 100%; }
.app-main-full { display: flex; flex-direction: column; padding: 0; }
.app-main-inner { flex: 1; min-height: 0; display: flex; flex-direction: column; }

/* ---------------- Focus states ---------------- */
.btn:focus, .btn:active:focus, .btn-link.nav-link:focus,
.form-control:focus, .form-select:focus, .form-check-input:focus,
[tabindex="0"]:focus, a:focus-visible, button:focus-visible {
  outline: none;
  box-shadow: var(--focus-ring);
}

/* ---------------- Buttons ---------------- */
.btn {
  font-size: 0.875rem; font-weight: 600; border-radius: var(--radius-md);
  transition: background-color var(--transition-base), border-color var(--transition-base),
              color var(--transition-base), transform var(--transition-fast), box-shadow var(--transition-base);
}
.btn:active { transform: scale(0.98); }
.btn-sm { font-size: var(--fs-sm); }

.btn-primary {
  --bs-btn-bg: var(--color-primary);
  --bs-btn-border-color: var(--color-primary);
  --bs-btn-hover-bg: var(--color-primary-hover);
  --bs-btn-hover-border-color: var(--color-primary-hover);
  --bs-btn-active-bg: var(--color-primary-hover);
  --bs-btn-active-border-color: var(--color-primary-hover);
  color: var(--color-on-primary);
}
.btn-primary:hover { background-color: var(--color-primary-hover); border-color: var(--color-primary-hover); }

.btn-secondary {
  --bs-btn-bg: var(--color-secondary);
  --bs-btn-border-color: var(--color-secondary);
  --bs-btn-hover-bg: #52525b;
  --bs-btn-hover-border-color: #52525b;
  color: #fff;
}

.btn-success {
  --bs-btn-bg: var(--color-success);
  --bs-btn-border-color: var(--color-success);
  --bs-btn-hover-bg: #166534;
  --bs-btn-hover-border-color: #166534;
  color: #fff;
}

.btn-danger {
  --bs-btn-bg: var(--color-danger);
  --bs-btn-border-color: var(--color-danger);
  --bs-btn-hover-bg: var(--color-danger-hover);
  --bs-btn-hover-border-color: var(--color-danger-hover);
  color: #fff;
}

.btn-info {
  --bs-btn-bg: var(--color-info);
  --bs-btn-border-color: var(--color-info);
  color: #fff;
}

.btn-outline-primary {
  --bs-btn-color: var(--color-primary);
  --bs-btn-border-color: var(--color-primary);
  --bs-btn-hover-bg: var(--color-primary);
  --bs-btn-hover-border-color: var(--color-primary);
  --bs-btn-active-bg: var(--color-primary);
  color: var(--color-primary);
}
.btn-outline-primary:hover { color: var(--color-on-primary); background-color: var(--color-primary); border-color: var(--color-primary); }

.btn-outline-secondary {
  --bs-btn-color: var(--color-text);
  --bs-btn-border-color: var(--color-border-strong);
  --bs-btn-hover-bg: var(--color-surface-2);
  --bs-btn-hover-border-color: var(--color-border-strong);
  --bs-btn-active-bg: var(--color-surface-2);
  color: var(--color-text);
  background-color: var(--color-surface);
}
.btn-outline-secondary:hover { color: var(--color-text); background-color: var(--color-surface-2); border-color: var(--color-border-strong); }

.btn-outline-danger {
  --bs-btn-color: var(--color-danger);
  --bs-btn-border-color: var(--color-danger);
  --bs-btn-hover-bg: var(--color-danger);
  --bs-btn-hover-border-color: var(--color-danger);
  color: var(--color-danger);
}
.btn-outline-danger:hover { color: #fff; background-color: var(--color-danger); border-color: var(--color-danger); }

.btn-outline-success {
  --bs-btn-color: var(--color-success);
  --bs-btn-border-color: var(--color-success);
  --bs-btn-hover-bg: var(--color-success);
  --bs-btn-hover-border-color: var(--color-success);
  color: var(--color-success);
}
.btn-outline-success:hover { color: #fff; background-color: var(--color-success); border-color: var(--color-success); }

/* Ghost button: borderless, quiet until hovered (Linear-style) */
.btn-ghost {
  background: transparent; border: 1px solid transparent;
  color: var(--color-text-muted);
}
.btn-ghost:hover { color: var(--color-text); background: var(--color-surface-2); border-color: transparent; }

/* Icon button */
.btn-icon {
  display: inline-flex; align-items: center; justify-content: center;
  min-width: 36px; min-height: 36px; padding: 8px;
  border-radius: var(--radius-md);
}
.btn-icon i { font-size: 1rem; line-height: 1; }
.btn-sm.btn-icon { min-width: 32px; min-height: 32px; padding: 6px; }
@media (pointer: coarse) {
  .btn-icon { min-width: 44px; min-height: 44px; }
  .btn-sm.btn-icon { min-width: 36px; min-height: 36px; }
}

/* ---------------- Forms ---------------- */
.form-control, .form-select {
  font-size: 0.875rem;
  border-radius: var(--radius-md);
  border-color: var(--color-border);
  background-color: var(--color-surface);
  color: var(--color-text);
  transition: border-color var(--transition-base), box-shadow var(--transition-base);
}
.form-control:hover, .form-select:hover { border-color: var(--color-border-strong); }
.form-control:focus, .form-select:focus {
  border-color: var(--color-primary);
  background-color: var(--color-surface);
  color: var(--color-text);
  box-shadow: var(--focus-ring);
}
.form-control::placeholder { color: var(--color-text-subtle); }
.form-control:disabled, .form-select:disabled { background-color: var(--color-surface-2); opacity: 0.7; }
.form-label { font-size: var(--fs-sm); font-weight: 600; color: var(--color-text); margin-bottom: var(--space-2); }
.form-text { color: var(--color-text-muted); }
input[type="text"], input[type="search"], input[type="email"], input[type="password"], input[type="number"], input[type="date"], textarea, select {
  min-height: 38px;
}
.form-control-sm, .form-select-sm { min-height: 32px; }

.form-check-input { border-color: var(--color-border-strong); }
.form-check-input:checked { background-color: var(--color-primary); border-color: var(--color-primary); }
.form-check-input:focus { box-shadow: var(--focus-ring); border-color: var(--color-primary); }

.input-group-text {
  background-color: var(--color-surface-2); border-color: var(--color-border);
  color: var(--color-text-muted); border-radius: var(--radius-md);
}

/* ---------------- Cards (Bootstrap override) ---------------- */
.card {
  background-color: var(--color-surface);
  color: var(--color-text);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: none;
}
.card-header {
  background-color: transparent;
  border-bottom: 1px solid var(--color-border);
}
.card-header h4 > i, .card-header h5 > i { color: var(--color-primary); }
.card-body > h6 > i { color: var(--color-primary); }

/* ---------------- Badges ---------------- */
.badge {
  font-size: 11px; font-weight: 600; padding: 3px 8px; border-radius: var(--radius-full);
  font-variant-numeric: tabular-nums; letter-spacing: 0.01em;
}
.badge.bg-primary { background-color: var(--color-primary) !important; color: var(--color-on-primary) !important; }
.badge.bg-secondary { background-color: var(--color-secondary) !important; color: #fff !important; }
.badge.bg-success { background-color: var(--color-success) !important; color: #fff !important; }
.badge.bg-danger { background-color: var(--color-danger) !important; color: #fff !important; }
.badge.bg-info { background-color: var(--color-info) !important; color: #fff !important; }
.badge.bg-warning { background-color: var(--color-accent-soft) !important; color: var(--color-accent) !important; }
html.theme-dark .badge.bg-secondary,
html.theme-dark .badge.bg-success,
html.theme-dark .badge.bg-danger,
html.theme-dark .badge.bg-info { color: #18181b !important; }

/* Tag chip (soft blue) */
.badge.tag {
  background: var(--color-primary-soft) !important;
  color: var(--color-primary) !important;
  border: 1px solid transparent;
}
html.theme-dark .badge.tag { color: var(--color-primary) !important; }

/* Assignee pill (neutral) */
.badge.assignee {
  background: var(--color-surface-2) !important;
  color: var(--color-text) !important;
  border: 1px solid var(--color-border);
  font-weight: 500;
}
.badge.assignee i { color: var(--color-text-muted); margin-right: 2px; }

/* Assignee picker dropdown */
.assignee-picker { position: relative; }
.assignee-picker-menu { min-width: 100%; width: 100%; max-height: 240px; overflow-y: auto; }
.assignee-option { cursor: pointer; }
.assignee-option:hover { background: var(--color-surface-2); border-radius: 4px; }
.assignee-picker-btn .badge.assignee { font-weight: 400; }

/* Story points pill */
.badge.story-points {
  background: var(--color-primary-soft) !important;
  color: var(--color-primary) !important;
}
.badge.story-points i { margin-right: 2px; }

/* Card creator line */
.card-creator {
  font-size: 0.72rem;
  margin-top: 2px;
}
.card-creator i { margin-right: 3px; }

/* Checklist / attachment badges */
.badge.checklist-badge {
  background: var(--color-surface-2) !important;
  color: var(--color-text-muted) !important;
  border: 1px solid var(--color-border);
}
.badge.checklist-badge.done { background: var(--color-success-soft) !important; color: var(--color-success) !important; border-color: transparent; }
.badge.attachment-badge {
  background: var(--color-surface-2) !important;
  color: var(--color-text-muted) !important;
  border: 1px solid var(--color-border);
}
.badge.comment-badge {
  background: var(--color-surface-2) !important;
  color: var(--color-text-muted) !important;
  border: 1px solid var(--color-border);
}

.badge.dep-blocked-badge {
  background: var(--color-accent-soft) !important;
  color: var(--color-accent) !important;
  border: 1px solid transparent;
}
.badge.dep-blocking-badge {
  background: var(--color-primary-soft) !important;
  color: var(--color-primary) !important;
  border: 1px solid transparent;
}

/* ---------------- Navbar ---------------- */
.app-navbar {
  background-color: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  box-shadow: none;
  min-height: 56px;
  padding-top: 6px; padding-bottom: 6px;
}
.app-navbar .navbar-brand {
  color: var(--color-text) !important;
  font-weight: 700;
  display: inline-flex; align-items: center; gap: var(--space-3);
  letter-spacing: -0.01em; font-size: var(--fs-md);
}
.app-navbar .navbar-brand i {
  display: inline-flex; align-items: center; justify-content: center;
  width: 28px; height: 28px; border-radius: 7px;
  background: var(--color-primary); color: var(--color-on-primary);
  font-size: 0.95rem;
}
.app-navbar .navbar-text { color: var(--color-text-muted) !important; }
html.theme-dark .app-navbar .navbar-text { color: var(--color-text-muted) !important; }

/* Navbar action buttons: ghost style, borderless */
.app-navbar .btn-outline-light {
  --bs-btn-color: var(--color-text-muted);
  --bs-btn-hover-bg: var(--color-surface-2);
  --bs-btn-hover-color: var(--color-text);
  color: var(--color-text-muted);
  background: transparent;
  border-color: transparent;
}
.app-navbar .btn-outline-light:hover { color: var(--color-text); background-color: var(--color-surface-2); border-color: transparent; }
.app-navbar .btn-outline-light .bi { color: inherit; }
.app-navbar .navbar-toggler { border-color: var(--color-border); color: var(--color-text-muted); }
.app-navbar .navbar-toggler-icon {
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba%2890, 90, 100, 0.85%29' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
}

.user-chip {
  display: inline-flex; align-items: center; gap: var(--space-2);
  padding: 4px var(--space-2) 4px 4px;
  border-radius: var(--radius-full);
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
}
.user-avatar {
  width: 26px; height: 26px; border-radius: var(--radius-full);
  background: var(--color-primary); color: var(--color-on-primary);
  display: inline-flex; align-items: center; justify-content: center;
  font-size: 11px; font-weight: 700;
}
img.user-avatar, img.avatar-initials, .avatar-img {
  background: transparent; padding: 0; flex: none;
}
.assignee-avatar-img {
  width: 16px; height: 16px; border-radius: var(--radius-full);
  object-fit: cover; vertical-align: middle;
}
.workload-avatar-img {
  width: 28px; height: 28px; border-radius: var(--radius-full);
  object-fit: cover; flex: none;
}

/* Notification badge */
#notificationBadge { font-size: 10px; min-width: 18px; height: 18px; padding: 0 5px; }
#notificationList { min-width: 340px; max-height: 400px; overflow-y: auto; }

/* ---------------- Dropdown menus (all) ---------------- */
.dropdown-menu {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  padding: 6px;
}
.dropdown-item {
  border-radius: var(--radius-sm);
  padding: 7px 10px;
  font-size: 0.875rem;
  color: var(--color-text);
  transition: background-color var(--transition-fast);
}
.dropdown-item:hover, .dropdown-item:focus { background-color: var(--color-surface-2); color: var(--color-text); }
.dropdown-item-text { color: var(--color-text-muted); }
.dropdown-header { color: var(--color-text-muted); font-size: var(--fs-xs); font-weight: 700; text-transform: uppercase; letter-spacing: 0.04em; }
.dropdown-divider { border-color: var(--color-border); margin: 6px 0; }
.dropdown-toggle::after { vertical-align: 0.15em; }

#notificationDropdown .dropdown-menu { box-shadow: var(--shadow-lg); }
#notificationDropdown .dropdown-item.text-muted { color: var(--color-text-muted) !important; }
#notificationDropdown .dropdown-item.fw-bold { color: var(--color-text); }

/* ---------------- Theme toggle (in navbar) ---------------- */
#themeToggle {
  min-width: 36px; min-height: 36px; border-radius: var(--radius-md);
  display: inline-flex; align-items: center; justify-content: center;
  background: transparent; border: 1px solid transparent; color: var(--color-text-muted);
  transition: background-color var(--transition-base), color var(--transition-base);
}
#themeToggle:hover { background: var(--color-surface-2); color: var(--color-text); }
#themeToggle i { font-size: 1rem; }

/* =====================================================================
   Kanban Board — horizontal scroll canvas (Trello-style)
   ===================================================================== */
.board-page {
  flex: 1; min-height: 0;
  display: flex; flex-direction: column;
  padding: var(--space-4) 0 0;
}

/* Toolbar above the canvas */
.board-toolbar {
  display: flex; align-items: center; justify-content: space-between;
  gap: var(--space-3); flex-wrap: wrap;
  padding: 0 var(--space-5) var(--space-3);
}
.board-toolbar h1 {
  font-size: var(--fs-xl); font-weight: 700; margin: 0;
  display: flex; align-items: center; gap: var(--space-2);
  letter-spacing: -0.02em;
}
.board-toolbar h1 i { color: var(--color-primary); }
.board-toolbar-actions { display: flex; align-items: center; gap: 6px; flex-wrap: wrap; }
.board-toolbar-divider { width: 1px; height: 22px; background: var(--color-border); margin: 0 4px; }

.board-search { position: relative; }
.board-search > i {
  position: absolute; left: 10px; top: 50%; transform: translateY(-50%);
  color: var(--color-text-subtle); font-size: 0.85rem; pointer-events: none;
}
.board-search .form-control {
  padding-left: 30px; width: 220px; min-height: 34px;
  background: var(--color-surface);
  border-radius: var(--radius-md);
}
@media (max-width: 576px) { .board-search .form-control { width: 100%; } .board-search { flex: 1 1 100%; order: 10; } }

/* The canvas: horizontal scroller holding the columns */
.board-canvas {
  flex: 1; min-height: 0;
  display: flex; align-items: stretch;
  gap: var(--space-3);
  overflow-x: auto; overflow-y: hidden;
  padding: var(--space-1) var(--space-5) var(--space-4);
  scrollbar-width: thin;
  scrollbar-color: var(--color-border-strong) transparent;
}
.board-canvas::-webkit-scrollbar { height: 10px; }
.board-canvas::-webkit-scrollbar-track { background: transparent; }
.board-canvas::-webkit-scrollbar-thumb {
  background: var(--color-border-strong); border-radius: var(--radius-full);
  border: 2px solid var(--color-bg);
}

/* One column (= one bucket) */
.board-column {
  flex: 0 0 300px;
  width: 300px;
  max-height: 100%;
  display: flex;
  scroll-snap-align: start;
}
/* Mobile: columns stack vertically, page scrolls as a whole */
@media (max-width: 767px) {
  .board-canvas { flex-direction: column; overflow: visible; gap: var(--space-4); }
  .board-column { flex: none; width: 100%; max-height: none; scroll-snap-align: unset; }
  .bucket-body { overflow: visible; }
  /* Mobile card collapse (> 5 cards per bucket, see board-collapse.js) */
  .card-draggable.card-collapsed { display: none; }
}

/* "Show more/less" toggle for collapsed buckets (mobile) */
.bucket-show-more {
  width: 100%; justify-content: center;
  color: var(--color-text-muted);
  border: 1px dashed var(--color-border-strong);
  background: transparent;
  border-radius: var(--radius-md);
  font-weight: 500;
}
.bucket-show-more:hover { color: var(--color-primary); background: var(--color-primary-soft); border-color: var(--color-primary); }

/* Bucket column shell */
.bucket-card {
  display: flex; flex-direction: column;
  width: 100%; max-height: 100%;
  background-color: var(--color-column);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  box-shadow: none;
  margin-bottom: 0;
  /* --bucket-color is set inline via data attribute; used as accent */
}
.bucket-card .card-header {
  background-color: transparent;
  color: var(--color-text);
  border-bottom: none;
  border-radius: var(--radius-xl) var(--radius-xl) 0 0;
  padding: var(--space-3) var(--space-3) var(--space-2);
  font-weight: 600;
  display: flex; align-items: center; gap: var(--space-2);
  flex: none;
}
/* Colored dot in the header when a bucket color is set */
.bucket-card[style*="--bucket-color"] .card-header::before {
  content: "";
  width: 8px; height: 8px; border-radius: var(--radius-full);
  background: var(--bucket-color);
  flex: none;
}
.bucket-card[style*="--bucket-color"] .bucket-count {
  background: color-mix(in srgb, var(--bucket-color) 14%, var(--color-column));
  color: var(--bucket-color);
  border-color: transparent;
}
html.theme-dark .bucket-card[style*="--bucket-color"] .bucket-count {
  background: color-mix(in srgb, var(--bucket-color) 22%, var(--color-column));
}
.bucket-card .card-header h5 {
  font-size: var(--fs-sm); font-weight: 600; margin: 0; color: var(--color-text);
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
  flex: 1; min-width: 0;
}
.bucket-card .bucket-count {
  background: var(--color-surface); color: var(--color-text-muted);
  border: 1px solid var(--color-border); padding: 1px 8px;
  border-radius: var(--radius-full); font-size: 11px; font-weight: 600;
  font-variant-numeric: tabular-nums; flex: none;
}

/* Bucket color dot in management list */
.bucket-color-dot {
  display: inline-block;
  width: 14px; height: 14px;
  border-radius: var(--radius-full);
  background: var(--bucket-color, var(--color-secondary));
  border: 1px solid var(--color-border);
  flex-shrink: 0;
}

/* Column body: the vertical card scroller */
.bucket-body {
  flex: 1; min-height: 40px;
  overflow-y: auto; overflow-x: hidden;
  background-color: transparent;
  border: none;
  border-radius: 0;
  padding: var(--space-1) var(--space-3) var(--space-2);
  scrollbar-width: thin;
  scrollbar-color: var(--color-border-strong) transparent;
  transition: background-color var(--transition-base);
}
.bucket-body::-webkit-scrollbar { width: 8px; }
.bucket-body::-webkit-scrollbar-track { background: transparent; }
.bucket-body::-webkit-scrollbar-thumb {
  background: var(--color-border-strong); border-radius: var(--radius-full);
  border: 2px solid var(--color-column);
}
.bucket-body.is-empty-hint::before {
  content: "Drop cards here"; display: block;
  color: var(--color-text-subtle); font-size: var(--fs-xs);
  text-align: center; padding: var(--space-4) 0;
  border: 1px dashed var(--color-border-strong); border-radius: var(--radius-md);
  margin-bottom: var(--space-2);
}
.bucket-body:has(.card-draggable):not(.bucket-hover)::before { display: none; }

.bucket-hover { background-color: color-mix(in srgb, var(--color-primary) 7%, var(--color-column)); }

/* Column footer with add-card button */
.bucket-card .card-footer {
  background-color: transparent;
  border-top: none;
  padding: var(--space-2) var(--space-3) var(--space-3);
  flex: none;
}
.bucket-add-card {
  width: 100%; justify-content: flex-start;
  color: var(--color-text-muted);
  border: 1px solid transparent;
  background: transparent;
  border-radius: var(--radius-md);
  font-weight: 500;
}
.bucket-add-card:hover { color: var(--color-primary); background: var(--color-primary-soft); border-color: transparent; }

/* ---------------- Kanban Board: Cards ---------------- */
.card-draggable {
  cursor: grab;
  background-color: var(--color-raised);
  color: var(--color-text);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-xs);
  transition: border-color var(--transition-base), box-shadow var(--transition-base), background-color var(--transition-base);
  margin-bottom: var(--space-2);
}
.card-draggable:hover { border-color: var(--color-border-strong); box-shadow: var(--shadow-sm); }
.card-draggable:active { cursor: grabbing; }
.card-draggable.dragging { opacity: 0.55; box-shadow: var(--shadow-md); }

.card-draggable .card-body { padding: 10px var(--space-3); }
.card-title {
  font-size: var(--fs-base); font-weight: 600; margin-bottom: var(--space-1);
  word-wrap: break-word; overflow-wrap: break-word; color: var(--color-text);
  letter-spacing: 0;
}
.card-text {
  font-size: var(--fs-xs); color: var(--color-text-muted);
  display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical;
  overflow: hidden; margin-bottom: var(--space-2);
}
.card-meta { display: flex; flex-wrap: wrap; gap: var(--space-1); margin-top: var(--space-2); }

/* Card action buttons */
.card-action-btn {
  min-width: 26px; min-height: 26px; padding: 2px 6px;
  border-radius: var(--radius-sm);
  color: var(--color-text-subtle);
  background: transparent; border: 1px solid transparent;
  transition: color var(--transition-base), background-color var(--transition-base);
}
.card-action-btn:hover { color: var(--color-text); background: var(--color-surface-2); }

/* Due date indicators */
.card-due {
  display: inline-flex; align-items: center; gap: 4px;
  padding: 2px 8px; border-radius: var(--radius-full);
  font-size: 11px; font-weight: 600;
  font-variant-numeric: tabular-nums;
  background: var(--color-surface-2); color: var(--color-text-muted);
  border: 1px solid var(--color-border);
}
.card-due i { font-size: 0.8em; }
.card-due.due-overdue { background: var(--color-danger-soft); color: var(--color-danger); border-color: transparent; }
.card-due.due-soon { background: var(--color-accent-soft); color: var(--color-accent); border-color: transparent; }
html.theme-dark .card-due.due-soon { color: var(--color-accent); }
html.theme-dark .card-due.due-overdue { color: var(--color-danger); }

/* Card sorting placeholder */
.card-sortable-placeholder {
  border: 2px dashed var(--color-primary);
  border-radius: var(--radius-md);
  background-color: var(--color-primary-soft);
  margin-bottom: var(--space-2);
  visibility: visible !important;
  height: 40px;
}
.bucket-body.ui-sortable-disabled { opacity: 0.6; }

/* ---------------- Modals ---------------- */
.modal-content {
  border-radius: var(--radius-xl);
  border: 1px solid var(--color-border);
  background-color: var(--color-surface);
  color: var(--color-text);
  box-shadow: var(--shadow-lg);
}
.modal-backdrop { background-color: rgba(9, 9, 11, 0.5); }
.modal-backdrop.show { opacity: 1; backdrop-filter: blur(3px); }
.modal-header {
  background-color: transparent;
  border-bottom: none;
  border-radius: var(--radius-xl) var(--radius-xl) 0 0;
  padding: var(--space-5) var(--space-5) var(--space-2);
}
.modal-title { font-size: var(--fs-md); font-weight: 700; color: var(--color-text); display: flex; align-items: center; gap: var(--space-2); letter-spacing: -0.01em; }
.modal-title i { color: var(--color-primary); }
.modal-body { padding: var(--space-4) var(--space-5); }
.modal-footer {
  background-color: transparent;
  border-top: 1px solid var(--color-border);
  border-radius: 0 0 var(--radius-xl) var(--radius-xl);
  padding: var(--space-3) var(--space-5);
}
.btn-close { opacity: 0.6; transition: opacity var(--transition-fast); }
.btn-close:hover { opacity: 1; }
html.theme-dark .btn-close { filter: invert(1) grayscale(100%) brightness(200%); }

/* Modal section divider */
.modal-section { margin: var(--space-5) 0; padding-top: var(--space-4); border-top: 1px solid var(--color-border); }
.modal-section h6 { font-weight: 700; color: var(--color-text); display: flex; align-items: center; gap: var(--space-2); margin-bottom: var(--space-3); }
.modal-section h6 i { color: var(--color-primary); }

/* ---------------- Tables ---------------- */
.admin-table { color: var(--color-text); border-color: var(--color-border); margin-bottom: 0; }
.admin-table th {
  background-color: transparent;
  color: var(--color-text-muted);
  font-weight: 700;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border-bottom: 1px solid var(--color-border);
  padding: var(--space-2) var(--space-3);
}
.admin-table td { vertical-align: middle; border-color: var(--color-border); padding: 10px var(--space-3); }
.admin-table tbody tr { transition: background-color var(--transition-fast); }
.admin-table tbody tr:hover { background-color: var(--color-surface-2); }
.table { --bs-table-striped-bg: transparent; }
.table > :not(caption) > * > * { border-bottom-width: 1px; }
html.theme-dark .table {
  color: var(--color-text);
  border-color: var(--color-border);
  /* Bootstrap 5.1 hardcodes these to #212529 — without overriding, striped/
     hovered/active cells get dark text on the dark surface. */
  --bs-table-striped-color: var(--color-text);
  --bs-table-hover-color: var(--color-text);
  --bs-table-active-color: var(--color-text);
  --bs-table-hover-bg: var(--color-surface-2);
}
.table-hover > tbody > tr:hover > * { --bs-table-accent-bg: var(--color-surface-2); color: var(--color-text); }

/* Pagination */
.page-link {
  color: var(--color-text); background-color: var(--color-surface);
  border-color: var(--color-border); border-radius: var(--radius-sm);
}
.page-link:hover { color: var(--color-text); background-color: var(--color-surface-2); border-color: var(--color-border-strong); }
.page-item.active .page-link { background-color: var(--color-primary); border-color: var(--color-primary); color: var(--color-on-primary); }
.page-item.disabled .page-link { background-color: var(--color-surface); color: var(--color-text-subtle); border-color: var(--color-border); }

.btn-group .btn { margin-right: 2px; }
.btn-group .btn:last-child { margin-right: 0; }

/* ---------------- jQuery UI Autocomplete ---------------- */
.ui-autocomplete {
  z-index: var(--z-autocomplete) !important;
  max-height: 240px; overflow-y: auto; overflow-x: hidden;
  background: var(--color-surface); color: var(--color-text);
  border: 1px solid var(--color-border); border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg); padding: 4px;
}
.ui-menu-item { list-style: none; }
.ui-menu .ui-menu-item-wrapper {
  padding: 7px 10px; cursor: pointer; border-radius: var(--radius-sm);
  color: var(--color-text); font-size: 0.875rem;
}
.ui-menu .ui-menu-item-wrapper:hover,
.ui-menu .ui-menu-item-wrapper.ui-state-active {
  background-color: var(--color-primary); color: var(--color-on-primary); border: none;
}

/* ---------------- Markdown content ---------------- */
.markdown-body > :last-child { margin-bottom: 0; }
.markdown-body h1, .markdown-body h2, .markdown-body h3,
.markdown-body h4, .markdown-body h5, .markdown-body h6 {
  font-size: 1em; font-weight: 700; margin: var(--space-2) 0 var(--space-1) 0;
  color: var(--color-text);
}
.markdown-body p { margin-bottom: var(--space-2); }
.markdown-body pre {
  background-color: var(--color-surface-2); padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-md); font-size: var(--fs-xs); overflow-x: auto;
  border: 1px solid var(--color-border); color: var(--color-text);
}
.markdown-body code {
  font-family: var(--font-mono); font-size: var(--fs-xs);
  background: var(--color-surface-2); padding: 2px 5px; border-radius: var(--radius-sm);
}
.markdown-body pre code { background: transparent; padding: 0; }
.markdown-body ul, .markdown-body ol { padding-left: 1.2rem; margin-bottom: var(--space-2); }
.markdown-body blockquote {
  border-left: 3px solid var(--color-border-strong); padding-left: var(--space-3);
  color: var(--color-text-muted); margin-bottom: var(--space-2);
}
.markdown-body table { border-collapse: collapse; margin-bottom: var(--space-2); }
.markdown-body th, .markdown-body td { border: 1px solid var(--color-border); padding: var(--space-1) var(--space-2); }

/* ---------------- Toasts ---------------- */
.toast-container { z-index: var(--z-toast); }
.toast {
  background-color: var(--color-surface); color: var(--color-text);
  border: 1px solid var(--color-border); border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg); min-width: 320px; max-width: 420px;
}
.toast-body { display: flex; align-items: flex-start; gap: var(--space-3); padding: var(--space-3) var(--space-4); }
.toast-icon { flex-shrink: 0; font-size: 1.1rem; line-height: 1.4; }
.toast-success .toast-icon { color: var(--color-success); }
.toast-error .toast-icon { color: var(--color-danger); }
.toast-info .toast-icon { color: var(--color-info); }
.toast-success { border-left: 3px solid var(--color-success); }
.toast-error { border-left: 3px solid var(--color-danger); }
.toast-info { border-left: 3px solid var(--color-info); }

/* ---------------- Confirm modal ---------------- */
#confirmModal .modal-body { display: flex; gap: var(--space-4); align-items: flex-start; padding: var(--space-5); }
#confirmModal .confirm-icon {
  flex-shrink: 0; width: 44px; height: 44px; border-radius: var(--radius-full);
  display: flex; align-items: center; justify-content: center;
  background: var(--color-danger-soft); color: var(--color-danger); font-size: 1.3rem;
}
html.theme-dark #confirmModal .confirm-icon { color: var(--color-danger); }
#confirmModal .confirm-content { flex-grow: 1; }
#confirmModal .confirm-title { font-weight: 700; font-size: var(--fs-md); margin-bottom: var(--space-1); color: var(--color-text); }
#confirmModal .confirm-message { color: var(--color-text-muted); font-size: var(--fs-sm); }
#confirmModal .confirm-input-row { margin-top: var(--space-3); }

/* ---------------- Skeleton loader ---------------- */
.skeleton {
  background: linear-gradient(90deg, var(--color-surface-2) 0%, var(--color-muted) 50%, var(--color-surface-2) 100%);
  background-size: 200% 100%;
  animation: skeleton-shimmer 1.4s ease-in-out infinite;
  border-radius: var(--radius-md);
}
.skeleton.text { height: 12px; margin-bottom: 6px; border-radius: var(--radius-sm); }
.skeleton.line { height: 8px; margin-bottom: 6px; border-radius: var(--radius-sm); }
.skeleton.block { height: 40px; }
.skeleton.h-200 { height: 200px; }
.skeleton.w-50 { width: 50%; }
.skeleton.w-25 { width: 25%; }
@keyframes skeleton-shimmer { 0% { background-position: 200% 0; } 100% { background-position: -200% 0; } }

/* ---------------- Empty states ---------------- */
.empty-state {
  text-align: center; padding: var(--space-12) var(--space-4);
  color: var(--color-text-muted);
}
.empty-state i { font-size: 2.5rem; color: var(--color-text-subtle); margin-bottom: var(--space-3); display: block; }
.empty-state p { margin-bottom: var(--space-4); }
.empty-state .btn { margin-top: var(--space-2); }

/* ---------------- Stats / KPI cards ---------------- */
.kpi-card {
  background-color: var(--color-surface); border: 1px solid var(--color-border);
  border-radius: var(--radius-lg); padding: var(--space-5);
  box-shadow: none; position: relative;
  display: flex; flex-direction: column; gap: var(--space-1);
  height: 100%;
}
.kpi-card .kpi-icon {
  position: absolute; top: var(--space-4); right: var(--space-4);
  width: 36px; height: 36px; border-radius: var(--radius-md);
  display: flex; align-items: center; justify-content: center;
  font-size: 1.1rem;
}
.kpi-card .kpi-value { font-size: var(--fs-3xl); font-weight: 700; font-variant-numeric: tabular-nums; line-height: 1.1; letter-spacing: -0.02em; }
.kpi-card .kpi-label { color: var(--color-text-muted); font-size: var(--fs-sm); margin: 0; }
.kpi-card.kpi-primary .kpi-value, .kpi-card.kpi-primary .kpi-icon { color: var(--color-primary); }
.kpi-card.kpi-primary .kpi-icon { background: var(--color-primary-soft); }
.kpi-card.kpi-success .kpi-value, .kpi-card.kpi-success .kpi-icon { color: var(--color-success); }
.kpi-card.kpi-success .kpi-icon { background: var(--color-success-soft); }
.kpi-card.kpi-secondary .kpi-value, .kpi-card.kpi-secondary .kpi-icon { color: var(--color-secondary); }
.kpi-card.kpi-secondary .kpi-icon { background: var(--color-surface-2); }
.kpi-card.kpi-info .kpi-value, .kpi-card.kpi-info .kpi-icon { color: var(--color-info); }
.kpi-card.kpi-info .kpi-icon { background: var(--color-surface-2); }

/* Chart card */
.chart-card { background-color: var(--color-surface); border: 1px solid var(--color-border); border-radius: var(--radius-lg); box-shadow: none; margin-bottom: var(--space-4); height: 100%; }
.chart-card .chart-header { display: flex; align-items: center; gap: var(--space-2); padding: var(--space-4) var(--space-5); border-bottom: 1px solid var(--color-border); font-weight: 600; color: var(--color-text); }
.chart-card .chart-header i { color: var(--color-primary); }
.chart-card .chart-body { padding: var(--space-4) var(--space-5); }

/* ---------------- Page header ---------------- */
.page-header { display: flex; align-items: center; justify-content: space-between; gap: var(--space-3); margin-bottom: var(--space-5); flex-wrap: wrap; }
.page-header h1 { font-size: var(--fs-2xl); margin: 0; display: flex; align-items: center; gap: var(--space-3); letter-spacing: -0.02em; }
.page-header h1 i { color: var(--color-primary); }
.page-header-actions { display: flex; align-items: center; gap: var(--space-2); flex-wrap: wrap; }

/* Narrow content pages (account settings etc.) */
.page-narrow { max-width: 640px; }
.page-narrow-xs { max-width: 540px; }

/* ---------------- Auth forms (login / create board) ---------------- */
.auth-card { border: 1px solid var(--color-border); border-radius: var(--radius-xl); box-shadow: var(--shadow-md); overflow: hidden; }
.auth-card .card-header { background: transparent; color: var(--color-text); text-align: center; padding: var(--space-8) var(--space-6) 0; border: none; }
.auth-card .card-header h2 { color: var(--color-text); margin: 0; font-weight: 700; font-size: var(--fs-xl); letter-spacing: -0.02em; }
.auth-card .card-header i, .auth-icon {
  font-size: 2rem; display: inline-flex; align-items: center; justify-content: center;
  width: 56px; height: 56px; border-radius: var(--radius-xl);
  background: var(--color-primary-soft); color: var(--color-primary);
  margin-bottom: var(--space-4);
}
.auth-card .card-body { padding: var(--space-6) var(--space-8) var(--space-8); }
@media (max-width: 576px) { .auth-card .card-body { padding: var(--space-5); } }

/* ---------------- Board list cards ---------------- */
.board-card { transition: border-color var(--transition-base), box-shadow var(--transition-base); height: 100%; }
.board-card:hover { border-color: var(--color-border-strong); box-shadow: var(--shadow-md); }
.board-card .card-body { padding: var(--space-4) var(--space-5); }
.board-card .card-footer { background: transparent; border-top: 1px solid var(--color-border); padding: var(--space-3) var(--space-5); }
.board-card .board-stats { display: flex; gap: var(--space-4); flex-wrap: wrap; color: var(--color-text-muted); font-size: var(--fs-sm); margin-bottom: var(--space-2); }
.board-card .board-stats span { display: inline-flex; align-items: center; gap: 4px; }

/* ---------------- Misc ---------------- */
.list-group-item {
  background-color: var(--color-surface); color: var(--color-text); border-color: var(--color-border);
}
html.theme-dark .list-group-item { background-color: var(--color-surface); color: var(--color-text); border-color: var(--color-border); }

.alert { border-radius: var(--radius-md); border: none; font-size: 0.875rem; }
.alert-danger { background: var(--color-danger-soft); color: #991b1b; }
.alert-success { background: var(--color-success-soft); color: #166534; }
.alert-info { background: var(--color-primary-soft); color: var(--color-primary); }
.alert-warning { background: var(--color-accent-soft); color: var(--color-accent); }
html.theme-dark .alert-danger { background: var(--color-danger-soft); color: var(--color-danger); }
html.theme-dark .alert-success { background: var(--color-success-soft); color: var(--color-success); }
html.theme-dark .alert-info { background: var(--color-primary-soft); color: var(--color-primary); }
html.theme-dark .alert-warning { background: var(--color-accent-soft); color: var(--color-accent); }

.text-primary { color: var(--color-primary) !important; }
.text-success { color: var(--color-success) !important; }
.text-secondary { color: var(--color-secondary) !important; }
.text-info { color: var(--color-info) !important; }
.text-danger { color: var(--color-danger) !important; }

.bg-primary { background-color: var(--color-primary) !important; }
.bg-light { background-color: var(--color-surface-2) !important; color: var(--color-text) !important; }
html.theme-dark .text-dark { color: var(--color-text) !important; }

/* Comment bubbles */
.comment-item { background: var(--color-surface-2); border: 1px solid var(--color-border); border-radius: var(--radius-lg); padding: var(--space-3) var(--space-4); margin-bottom: var(--space-2); }
.comment-item .comment-meta { display: flex; justify-content: space-between; align-items: center; margin-bottom: var(--space-1); font-size: var(--fs-xs); }
.comment-item .comment-author { font-weight: 600; color: var(--color-text); display: inline-flex; align-items: center; gap: var(--space-2); }
.comment-item .comment-time { color: var(--color-text-muted); }
.comment-item .comment-body { color: var(--color-text); font-size: var(--fs-sm); }
.comment-item .comment-body p:last-child { margin-bottom: 0; }

/* Public read-only view: comment bubbles on cards */
.comment-bubble { background: var(--color-surface-2); border: 1px solid var(--color-border); border-radius: var(--radius-md); padding: var(--space-2) var(--space-3); margin-bottom: var(--space-2); }
.comment-bubble .comment-meta { display: flex; justify-content: space-between; align-items: center; margin-bottom: 2px; font-size: var(--fs-xs); color: var(--color-text-muted); }
.comment-bubble .comment-author { font-weight: 600; color: var(--color-text); display: inline-flex; align-items: center; gap: var(--space-2); }
.comment-bubble .comment-body { font-size: var(--fs-xs); color: var(--color-text); }

/* Checklist progress */
.checklist-progress { height: 6px; background: var(--color-surface-2); border-radius: var(--radius-full); overflow: hidden; margin: var(--space-2) 0; }
.checklist-progress-bar { height: 100%; background: var(--color-primary); transition: width var(--transition-slow); }
.checklist-progress-bar.done { background: var(--color-success); }

/* Attachment row */
.attachment-row { display: flex; align-items: center; gap: var(--space-3); padding: var(--space-2) var(--space-3); border: 1px solid var(--color-border); border-radius: var(--radius-md); margin-bottom: var(--space-2); background: var(--color-surface); }
.attachment-row .attachment-icon { width: 32px; height: 32px; border-radius: var(--radius-sm); background: var(--color-surface-2); display: flex; align-items: center; justify-content: center; color: var(--color-text-muted); }
.attachment-row .attachment-name { flex-grow: 1; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.attachment-row .attachment-meta { color: var(--color-text-muted); font-size: var(--fs-xs); white-space: nowrap; }

/* Avatar initials */
.avatar-initials {
  display: inline-flex; align-items: center; justify-content: center;
  width: 22px; height: 22px; border-radius: var(--radius-full);
  background: var(--color-primary); color: var(--color-on-primary);
  font-size: 10px; font-weight: 700;
}

/* ---------------- Upcoming tasks (Boards overview) ---------------- */
.upcoming-tasks { background: var(--color-surface); border: 1px solid var(--color-border); border-radius: var(--radius-lg); padding: var(--space-4) var(--space-5); }
.upcoming-tasks-header { display: flex; align-items: center; gap: var(--space-3); margin-bottom: var(--space-3); }
.upcoming-tasks-header h2 { font-size: var(--fs-lg); font-weight: 700; margin: 0; display: flex; align-items: center; gap: var(--space-2); color: var(--color-text); letter-spacing: -0.01em; }
.upcoming-tasks-header h2 i { color: var(--color-primary); }
.upcoming-tasks-count { display: inline-flex; align-items: center; justify-content: center; min-width: 22px; height: 22px; padding: 0 6px; border-radius: var(--radius-full); background: var(--color-primary-soft); color: var(--color-primary); font-size: var(--fs-xs); font-weight: 700; }
.upcoming-tasks-list { display: flex; flex-direction: column; gap: var(--space-2); }
.upcoming-task { display: flex; align-items: center; justify-content: space-between; gap: var(--space-3); padding: var(--space-3) var(--space-4); border: 1px solid var(--color-border); border-left: 3px solid var(--color-border-strong); border-radius: var(--radius-md); text-decoration: none; color: var(--color-text); background: var(--color-surface); transition: border-color var(--transition-base), background var(--transition-base); }
.upcoming-task:hover { text-decoration: none; color: var(--color-text); background: var(--color-surface-2); border-color: var(--color-border-strong); }
.upcoming-task.due-overdue { border-left-color: var(--color-danger); }
.upcoming-task.due-today { border-left-color: var(--color-accent); }
.upcoming-task.due-soon { border-left-color: var(--color-primary); }
.upcoming-task-main { min-width: 0; flex: 1; }
.upcoming-task-title { font-weight: 600; color: var(--color-text); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.upcoming-task-meta { display: flex; flex-wrap: wrap; gap: var(--space-3); margin-top: 2px; color: var(--color-text-muted); font-size: var(--fs-sm); }
.upcoming-task-meta span { display: inline-flex; align-items: center; gap: 4px; white-space: nowrap; }
.upcoming-task-due { display: inline-flex; align-items: center; gap: 4px; padding: 3px 10px; border-radius: var(--radius-full); font-size: 11px; font-weight: 600; font-variant-numeric: tabular-nums; white-space: nowrap; background: var(--color-surface-2); color: var(--color-text-muted); border: 1px solid var(--color-border); }
.upcoming-task.due-overdue .upcoming-task-due { background: var(--color-danger-soft); color: var(--color-danger); border-color: transparent; }
.upcoming-task.due-today .upcoming-task-due { background: var(--color-accent-soft); color: var(--color-accent); border-color: transparent; }

/* ---------------- Card modal: two-column layout ---------------- */
.card-modal-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-5);
}
@media (min-width: 992px) {
  .card-modal-layout { grid-template-columns: 1fr 300px; align-items: start; }
  .card-modal-layout .modal-side { position: sticky; top: 0; }
}
.card-modal-main { min-width: 0; }
.modal-side { display: flex; flex-direction: column; gap: var(--space-3); }
.modal-side .side-card {
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-3);
}
.modal-side .side-label {
  font-size: 11px; font-weight: 700; color: var(--color-text-muted);
  text-transform: uppercase; letter-spacing: 0.05em;
  margin-bottom: var(--space-2); display: block;
}
.modal-side .side-label i { color: var(--color-primary); margin-right: 4px; }
.modal-side .form-control, .modal-side .form-select { font-size: var(--fs-sm); }
.modal-title-context {
  font-size: var(--fs-sm); font-weight: 400; color: var(--color-text-muted);
  margin-top: 2px; display: block; max-width: 100%;
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}
.danger-zone {
  border: 1px dashed var(--color-danger); border-radius: var(--radius-md);
  padding: var(--space-3); display: flex; flex-direction: column; gap: var(--space-2);
}
.danger-zone .side-label { color: var(--color-danger); }
.danger-zone .side-label i { color: var(--color-danger); }

/* Compact meta grid (create modal) */
.meta-grid {
  display: grid; grid-template-columns: 1fr; gap: var(--space-3);
}
@media (min-width: 576px) { .meta-grid { grid-template-columns: 1fr 1fr 1fr; } }

/* ---------------- Card modal: collapsible <details> sections ---------------- */
.modal-details { border-top: 1px solid var(--color-border); padding-top: var(--space-4); }
.modal-details > summary {
  list-style: none; cursor: pointer; display: flex; align-items: center; gap: var(--space-2);
  font-weight: 600; color: var(--color-text); margin-bottom: 0;
  padding: var(--space-2) 0;
}
.modal-details > summary::-webkit-details-marker { display: none; }
.modal-details > summary i.chevron {
  margin-left: auto; transition: transform var(--transition-base); color: var(--color-text-subtle);
}
.modal-details[open] > summary i.chevron { transform: rotate(90deg); }
.modal-details[open] > summary { margin-bottom: var(--space-3); }
.modal-details > summary:hover { color: var(--color-primary); }
.modal-details .details-body { padding-top: var(--space-1); }

/* ---------------- Tag chips editor ---------------- */
.tag-chips {
  display: flex; flex-wrap: wrap; gap: 6px; align-items: center;
  width: 100%; min-height: 38px; padding: 5px 8px;
  border: 1px solid var(--color-border); border-radius: var(--radius-md);
  background-color: var(--color-surface); color: var(--color-text);
  cursor: text; transition: border-color var(--transition-base), box-shadow var(--transition-base);
}
.tag-chips:hover { border-color: var(--color-border-strong); }
.tag-chips:focus-within {
  border-color: var(--color-primary);
  box-shadow: var(--focus-ring);
}
.tag-chip {
  display: inline-flex; align-items: center; gap: 4px;
  background: var(--color-primary-soft); color: var(--color-primary);
  border: none; border-radius: var(--radius-full);
  padding: 2px 4px 2px 10px; font-size: 11px; font-weight: 600;
  line-height: 1.4;
}
html.theme-dark .tag-chip { color: var(--color-primary); }
.tag-chip button {
  border: none; background: transparent; color: inherit; cursor: pointer;
  width: 18px; height: 18px; padding: 0; border-radius: var(--radius-full);
  display: inline-flex; align-items: center; justify-content: center;
  opacity: 0.7; transition: opacity var(--transition-fast), background var(--transition-fast);
}
.tag-chip button:hover { opacity: 1; background: rgba(9, 9, 11, 0.1); }
.tag-chips-input {
  flex: 1; min-width: 120px; border: none !important; outline: none !important;
  background: transparent !important; box-shadow: none !important;
  padding: 2px 0; height: auto; min-height: auto; color: var(--color-text);
}
.tag-chips-input::placeholder { color: var(--color-text-subtle); }
.tag-chips.is-invalid { border-color: var(--color-danger); }

/* ---------------- Dependency picker ---------------- */
.dep-picker { position: relative; }
.dep-picker-btn {
  display: flex; flex-wrap: wrap; gap: 4px; align-items: center; min-height: 38px;
  width: 100%; text-align: left;
}
.dep-picker-btn .dep-chip {
  display: inline-flex; align-items: center; gap: 4px;
  background: var(--color-surface-2); color: var(--color-text);
  border: 1px solid var(--color-border); border-radius: var(--radius-full);
  padding: 2px 10px; font-size: 11px; font-weight: 600;
}
.dep-picker-btn .dep-chip i { color: var(--color-text-muted); }
.dep-picker-btn .dep-placeholder { color: var(--color-text-subtle); font-size: var(--fs-sm); }
.dep-picker-menu {
  min-width: 100%; width: 100%; max-height: 280px; overflow-y: auto;
  border: 1px solid var(--color-border); border-radius: var(--radius-lg);
  background: var(--color-surface); box-shadow: var(--shadow-lg);
  padding: var(--space-2);
}
.dep-picker-search {
  width: 100%; margin-bottom: var(--space-2);
  border: 1px solid var(--color-border); border-radius: var(--radius-sm);
  padding: 6px 10px; background: var(--color-surface); color: var(--color-text);
  font-size: var(--fs-sm);
}
.dep-picker-search:focus { outline: none; border-color: var(--color-primary); box-shadow: var(--focus-ring); }
.dep-picker-list { list-style: none; padding: 0; margin: 0; }
.dep-picker-list li label {
  display: flex; align-items: center; gap: var(--space-2);
  padding: var(--space-1) var(--space-2); border-radius: var(--radius-sm);
  cursor: pointer; font-size: var(--fs-sm); color: var(--color-text);
}
.dep-picker-list li label:hover { background: var(--color-surface-2); }
.dep-picker-list li label input { margin: 0; }
.dep-picker-empty { padding: var(--space-2); color: var(--color-text-muted); font-size: var(--fs-sm); }

/* ---------------- Markdown editor (write/preview) ---------------- */
.md-editor-tabs { display: flex; gap: 4px; margin-bottom: var(--space-2); }
.md-editor-tab {
  border: 1px solid var(--color-border); background: var(--color-surface);
  color: var(--color-text-muted); border-radius: var(--radius-sm);
  padding: 4px 12px; font-size: var(--fs-sm); font-weight: 600; cursor: pointer;
  transition: color var(--transition-fast), background var(--transition-fast), border-color var(--transition-fast);
}
.md-editor-tab.active { color: var(--color-primary); border-color: var(--color-primary); background: var(--color-primary-soft); }
.md-editor-preview {
  border: 1px solid var(--color-border); border-radius: var(--radius-md);
  padding: var(--space-3); background: var(--color-surface-2);
  min-height: 96px; max-height: 360px; overflow-y: auto;
}
.md-editor-preview:empty::before {
  content: "Nothing to preview."; color: var(--color-text-subtle); font-size: var(--fs-sm);
}

/* ---------------- Button loading state ---------------- */
.btn .spinner-border { width: 1rem; height: 1rem; margin-right: 6px; }

/* ---------------- Stacked modal: Edit Bucket over Bucket Management ---------------- */
#editBucketModal { z-index: 1080; }
.modal-backdrop.edit-bucket-backdrop { z-index: 1075; }
#bucketManagementModal.modal-underneath { pointer-events: none; }
#bucketManagementModal.modal-underneath .modal-content { opacity: 0.55; filter: blur(1px); transition: opacity var(--transition-base), filter var(--transition-base); }

/* ---------------- Autosize textarea ---------------- */
textarea.autosize { resize: vertical; min-height: 80px; }

/* ---------------- Filter chips (board filter dropdown) ---------------- */
.filter-chip-group {
  display: flex; flex-wrap: wrap; gap: 6px;
  padding: 4px 10px 8px;
}
.filter-chip {
  display: inline-flex; align-items: center; gap: 4px;
  padding: 4px 10px; border-radius: var(--radius-full);
  border: 1px solid var(--color-border); background: var(--color-surface);
  color: var(--color-text-muted); font-size: var(--fs-xs); font-weight: 600;
  cursor: pointer; transition: all var(--transition-fast);
}
.filter-chip:hover { border-color: var(--color-border-strong); color: var(--color-text); background: var(--color-surface-2); }
.filter-chip.active {
  background: var(--color-primary); color: var(--color-on-primary);
  border-color: var(--color-primary);
}
.filter-chip.active i { color: var(--color-on-primary); }

/* ---------------- Responsive helpers ---------------- */
@media (max-width: 576px) {
  .page-header { flex-direction: column; align-items: stretch; }
  .page-header-actions { justify-content: flex-end; }
  .kpi-card .kpi-value { font-size: var(--fs-2xl); }
  .board-toolbar { padding: 0 var(--space-3) var(--space-3); }
  .board-canvas { padding: var(--space-1) var(--space-3) var(--space-4); }
}

/* ---------------- Reduced motion ---------------- */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
  .card-draggable:hover { transform: none; }
  .btn:active { transform: none; }
  .skeleton { animation: none; }
  .modal-details > summary i.chevron { transition: none; }
}