/* University ERP — Premium theme layer (loads after Bootstrap RTL, before site.css) */

@layer theme {
  /* -------------------------------------------------------------------------
     Layer 1 — Raw ramps (optional tuning anchors)
     ------------------------------------------------------------------------- */
  :root {
    --brand-indigo-50: #eef2ff;
    --brand-indigo-100: #e0e7ff;
    --brand-indigo-200: #c7d2fe;
    --brand-indigo-300: #a5b4fc;
    --brand-indigo-400: #818cf8;
    --brand-indigo-500: #6366f1;
    --brand-indigo-600: #4f46e5;
    --brand-indigo-700: #4338ca;
    --brand-indigo-800: #3730a3;
    --brand-indigo-900: #312e81;

    --brand-teal-400: #22d3bb;
    --brand-teal-500: #14b8a6;
    --brand-teal-600: #0d9488;

    --brand-slate-50: #f8fafc;
    --brand-slate-100: #f1f5f9;
    --brand-slate-200: #e2e8f0;
    --brand-slate-400: #94a3b8;
    --brand-slate-500: #64748b;
    --brand-slate-600: #475569;
    --brand-slate-700: #334155;
    --brand-slate-800: #1e293b;
    --brand-slate-900: #0f172a;

    --brand-danger: #dc2626;
    --brand-danger-soft: rgba(220, 38, 38, 0.12);
    --brand-success: #059669;
    --brand-success-soft: rgba(5, 150, 105, 0.12);
    --brand-warning: #d97706;
    --brand-warning-soft: rgba(217, 119, 6, 0.14);

    /* Layer 2 — Semantic tokens */
    --color-bg: #f3f4f8;
    --color-bg-elevated: #f8fafc;
    --color-surface: #ffffff;
    --color-surface-glass: rgba(255, 255, 255, 0.72);
    --color-border: color-mix(in srgb, var(--brand-slate-900) 9%, transparent);
    --color-border-strong: color-mix(in srgb, var(--brand-slate-900) 14%, transparent);
    --color-text: var(--brand-slate-900);
    --color-muted: var(--brand-slate-500);
    --color-primary: var(--brand-indigo-600);
    --color-primary-hover: var(--brand-indigo-500);
    --color-primary-foreground: #ffffff;
    --color-accent: var(--brand-teal-500);
    --color-accent-soft: color-mix(in srgb, var(--brand-teal-500) 18%, transparent);

    --shadow-soft: 0 22px 55px rgba(15, 23, 42, 0.07);
    --shadow-soft-lg: 0 28px 70px rgba(15, 23, 42, 0.09);
    --shadow-glow-primary: 0 14px 38px color-mix(in srgb, var(--color-primary) 28%, transparent);
    --shadow-icon-glow: 0 10px 26px color-mix(in srgb, var(--color-primary) 22%, transparent);

    --radius-sm: 10px;
    --radius-md: 14px;
    --radius-lg: 18px;
    --radius-xl: 22px;
    --blur-glass: 16px;
    --ease-premium: cubic-bezier(0.22, 1, 0.36, 1);
    --duration-fast: 180ms;
    --duration-md: 240ms;

    --font-ui: "Tajawal", "Segoe UI", system-ui, -apple-system, sans-serif;
    --text-xs: 0.75rem;
    --text-sm: 0.875rem;
    --text-base: 1rem;
    --text-lg: 1.125rem;
    --text-xl: 1.25rem;
    --text-2xl: 1.5rem;
    --text-3xl: 2rem;
    --leading-tight: 1.25;
    --leading-snug: 1.35;
    --leading-relaxed: 1.65;

    --section-y: clamp(1.25rem, 2vw, 2rem);

    /* Bootstrap 5 bridges (RTL bundle respects these) */
    --bs-primary: var(--color-primary);
    --bs-primary-rgb: 79, 70, 229;
    --bs-link-color: color-mix(in srgb, var(--color-primary) 78%, black);
    --bs-link-hover-color: var(--color-primary);
    --bs-body-bg: var(--color-bg);
    --bs-body-color: var(--color-text);
    --bs-secondary-color: var(--color-muted);
    --bs-border-color: var(--color-border);
    --bs-border-radius: var(--radius-md);
    --bs-border-radius-lg: var(--radius-lg);
    --bs-border-radius-xl: var(--radius-xl);
    --bs-focus-ring-color: color-mix(in srgb, var(--color-primary) 38%, transparent);
    --bs-focus-ring-width: 0.22rem;
    --bs-success: var(--brand-success);
    --bs-warning: var(--brand-warning);
    --bs-danger: var(--brand-danger);
  }

  [data-theme="dark"] {
    --color-bg: #0b1020;
    --color-bg-elevated: #0f172a;
    --color-surface: #111827;
    --color-surface-glass: rgba(17, 24, 39, 0.72);
    --color-border: rgba(148, 163, 184, 0.18);
    --color-border-strong: rgba(148, 163, 184, 0.28);
    --color-text: #f8fafc;
    --color-muted: #94a3b8;
    --color-primary-foreground: #ffffff;
    --bs-body-bg: var(--color-bg);
    --bs-body-color: var(--color-text);
    --bs-secondary-color: var(--color-muted);
    --bs-border-color: var(--color-border);
    --shadow-soft: 0 22px 55px rgba(0, 0, 0, 0.35);
    --shadow-soft-lg: 0 28px 70px rgba(0, 0, 0, 0.45);
  }

  html {
    font-size: 15px;
  }

  body.erp-body {
    font-family: var(--font-ui);
    color: var(--color-text);
    background-color: var(--color-bg);
    background-image:
      radial-gradient(900px circle at 92% -10%, color-mix(in srgb, var(--color-primary) 14%, transparent), transparent 55%),
      radial-gradient(720px circle at 8% 20%, color-mix(in srgb, var(--color-accent) 12%, transparent), transparent 52%);
    background-attachment: fixed;
    text-rendering: optimizeLegibility;
    -webkit-font-smoothing: antialiased;
  }

  /* Typography rhythm (RTL-friendly; logical props) */
  .ui-prose {
    font-size: var(--text-base);
    line-height: var(--leading-relaxed);
  }

  .ui-heading-1 {
    font-size: clamp(var(--text-2xl), 2.6vw, var(--text-3xl));
    line-height: var(--leading-tight);
    letter-spacing: -0.02em;
    font-weight: 800;
  }

  .ui-heading-2 {
    font-size: var(--text-xl);
    line-height: var(--leading-snug);
    letter-spacing: -0.015em;
    font-weight: 800;
  }

  .ui-section {
    padding-block: var(--section-y);
  }

  .ui-kpi-value {
    font-variant-numeric: tabular-nums;
    font-weight: 800;
    letter-spacing: -0.03em;
    line-height: var(--leading-tight);
  }

  /* -------------------------------------------------------------------------
     Infographic-style icon shells
     ------------------------------------------------------------------------- */
  .ui-icon-squircle {
    --ui-icon-bg: color-mix(in srgb, var(--color-primary) 14%, white);
    --ui-icon-fg: var(--color-primary);
    --ui-icon-size: 48px;
    position: relative;
    isolation: isolate;
    width: var(--ui-icon-size);
    height: var(--ui-icon-size);
    border-radius: 22%;
    display: grid;
    place-items: center;
    color: var(--ui-icon-fg);
    background: linear-gradient(145deg, var(--ui-icon-bg), color-mix(in srgb, var(--ui-icon-bg) 65%, white));
    box-shadow:
      inset 0 1px 0 rgba(255, 255, 255, 0.65),
      0 10px 22px rgba(15, 23, 42, 0.07),
      var(--shadow-icon-glow);
    transition:
      transform var(--duration-md) var(--ease-premium),
      box-shadow var(--duration-md) var(--ease-premium),
      filter var(--duration-md) var(--ease-premium);
  }

  .ui-icon-squircle::after {
    content: "";
    position: absolute;
    inset: 0;
    border-radius: inherit;
    box-shadow: inset 0 0 0 1px color-mix(in srgb, var(--ui-icon-fg) 18%, transparent);
    pointer-events: none;
    z-index: 0;
  }

  .ui-icon-squircle > i {
    position: relative;
    z-index: 1;
    font-size: calc(var(--ui-icon-size) * 0.46);
    line-height: 1;
  }

  .ui-icon-squircle.ui-icon--sm {
    --ui-icon-size: 40px;
  }

  .ui-icon-squircle.ui-icon--lg {
    --ui-icon-size: 56px;
  }

  .ui-icon-squircle.ui-icon--primary {
    --ui-icon-bg: color-mix(in srgb, var(--brand-indigo-500) 16%, white);
    --ui-icon-fg: var(--brand-indigo-700);
  }

  .ui-icon-squircle.ui-icon--accent {
    --ui-icon-bg: color-mix(in srgb, var(--brand-teal-500) 18%, white);
    --ui-icon-fg: var(--brand-teal-600);
    --shadow-icon-glow: 0 12px 28px color-mix(in srgb, var(--brand-teal-500) 26%, transparent);
  }

  .ui-icon-squircle.ui-icon--success {
    --ui-icon-bg: var(--brand-success-soft);
    --ui-icon-fg: var(--brand-success);
    --shadow-icon-glow: 0 12px 28px color-mix(in srgb, var(--brand-success) 22%, transparent);
  }

  .ui-icon-squircle.ui-icon--warning {
    --ui-icon-bg: var(--brand-warning-soft);
    --ui-icon-fg: var(--brand-warning);
    --shadow-icon-glow: 0 12px 28px color-mix(in srgb, var(--brand-warning) 22%, transparent);
  }

  .ui-icon-squircle.ui-icon--muted {
    --ui-icon-bg: color-mix(in srgb, var(--brand-slate-500) 12%, white);
    --ui-icon-fg: var(--brand-slate-600);
    --shadow-icon-glow: none;
  }

  @media (hover: hover) {
    .ui-icon-squircle.ui-icon--interactive:hover {
      transform: translateY(-2px) scale(1.02);
      filter: saturate(1.05);
      box-shadow:
        inset 0 1px 0 rgba(255, 255, 255, 0.72),
        0 16px 34px rgba(15, 23, 42, 0.09),
        var(--shadow-icon-glow);
    }

    .ui-icon-squircle.ui-icon--interactive:active {
      transform: translateY(0) scale(0.99);
      transition-duration: calc(var(--duration-fast) - 20ms);
    }
  }

  .ui-icon-squircle:focus-visible {
    outline: none;
    box-shadow:
      inset 0 1px 0 rgba(255, 255, 255, 0.65),
      0 10px 22px rgba(15, 23, 42, 0.07),
      var(--shadow-icon-glow),
      0 0 0 3px color-mix(in srgb, var(--color-primary) 35%, transparent);
  }

  /* Circular variant */
  .ui-icon-circle {
    border-radius: 999px;
  }

  /* -------------------------------------------------------------------------
     Cards & glass surfaces
     ------------------------------------------------------------------------- */
  .ui-card {
    position: relative;
    border-radius: var(--radius-xl);
    border: 1px solid var(--color-border);
    background: var(--color-surface);
    box-shadow: var(--shadow-soft);
    transition:
      transform var(--duration-md) var(--ease-premium),
      box-shadow var(--duration-md) var(--ease-premium),
      border-color var(--duration-md) var(--ease-premium);
  }

  .ui-card--interactive {
    cursor: default;
  }

  @media (hover: hover) {
    .ui-card.ui-card--interactive:hover {
      transform: translateY(-3px);
      border-color: color-mix(in srgb, var(--color-primary) 26%, var(--color-border));
      box-shadow: var(--shadow-soft-lg), var(--shadow-glow-primary);
    }
  }

  .ui-card--glass {
    background: var(--color-surface-glass);
    backdrop-filter: saturate(160%) blur(var(--blur-glass));
    -webkit-backdrop-filter: saturate(160%) blur(var(--blur-glass));
    border-color: color-mix(in srgb, white 72%, var(--color-border));
    box-shadow:
      var(--shadow-soft),
      inset 0 1px 0 rgba(255, 255, 255, 0.65);
  }

  @supports not ((backdrop-filter: blur(1px)) or (-webkit-backdrop-filter: blur(1px))) {
    .ui-card--glass {
      background: var(--color-surface);
    }
  }

  /* -------------------------------------------------------------------------
     Modals
     ------------------------------------------------------------------------- */
  .modal-content.ui-modal {
    border-radius: var(--radius-xl);
    border: 1px solid var(--color-border-strong);
    background: var(--color-surface-glass);
    backdrop-filter: saturate(160%) blur(var(--blur-glass));
    -webkit-backdrop-filter: saturate(160%) blur(var(--blur-glass));
    box-shadow: var(--shadow-soft-lg);
    overflow: hidden;
  }

  @supports not ((backdrop-filter: blur(1px)) or (-webkit-backdrop-filter: blur(1px))) {
    .modal-content.ui-modal {
      background: var(--color-surface);
    }
  }

  .modal-content.ui-modal .modal-header {
    border-bottom: 1px solid var(--color-border);
    background: linear-gradient(180deg, color-mix(in srgb, var(--color-primary) 6%, transparent), transparent);
  }

  .modal-backdrop.show.ui-modal-backdrop {
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
  }

  /* -------------------------------------------------------------------------
     Buttons
     ------------------------------------------------------------------------- */
  .ui-btn {
    --ui-btn-bg: transparent;
    --ui-btn-fg: var(--color-text);
    --ui-btn-border: var(--color-border-strong);
    --ui-btn-shadow: 0 10px 22px rgba(15, 23, 42, 0.06);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.62rem 1.1rem;
    border-radius: var(--radius-lg);
    border: 1px solid var(--ui-btn-border);
    background: var(--ui-btn-bg);
    color: var(--ui-btn-fg);
    font-weight: 700;
    letter-spacing: -0.01em;
    text-decoration: none;
    cursor: pointer;
    box-shadow: var(--ui-btn-shadow);
    transition:
      transform var(--duration-md) var(--ease-premium),
      box-shadow var(--duration-md) var(--ease-premium),
      filter var(--duration-md) var(--ease-premium),
      border-color var(--duration-md) var(--ease-premium),
      background-color var(--duration-md) var(--ease-premium),
      color var(--duration-md) var(--ease-premium);
  }

  .ui-btn:focus-visible {
    outline: none;
    box-shadow:
      var(--ui-btn-shadow),
      0 0 0 3px color-mix(in srgb, var(--color-primary) 35%, transparent);
  }

  @media (hover: hover) {
    .ui-btn:hover {
      transform: translateY(-2px);
      filter: brightness(1.02);
      box-shadow: 0 18px 38px rgba(15, 23, 42, 0.1);
    }

    .ui-btn:active {
      transform: translateY(0);
      filter: brightness(0.98);
      box-shadow: 0 10px 24px rgba(15, 23, 42, 0.08);
      transition-duration: calc(var(--duration-fast) - 20ms);
    }
  }

  .ui-btn-primary {
    --ui-btn-bg: linear-gradient(135deg, var(--brand-indigo-600), var(--brand-indigo-500));
    --ui-btn-fg: var(--color-primary-foreground);
    --ui-btn-border: color-mix(in srgb, var(--brand-indigo-700) 55%, transparent);
    --ui-btn-shadow: var(--shadow-glow-primary);
    border-color: transparent;
    color: var(--ui-btn-fg);
  }

  @media (hover: hover) {
    .ui-btn-primary:hover {
      --ui-btn-bg: linear-gradient(135deg, var(--brand-indigo-500), var(--brand-indigo-400));
      box-shadow: 0 20px 52px color-mix(in srgb, var(--color-primary) 34%, transparent);
    }
  }

  .ui-btn-ghost {
    --ui-btn-bg: color-mix(in srgb, var(--color-primary) 8%, transparent);
    --ui-btn-fg: var(--brand-indigo-800);
    --ui-btn-border: color-mix(in srgb, var(--color-primary) 18%, transparent);
    --ui-btn-shadow: none;
  }

  .ui-btn-sm {
    padding: 0.48rem 0.85rem;
    border-radius: var(--radius-md);
    font-size: var(--text-sm);
  }

  /* Align Bootstrap primary with theme tokens */
  .btn-primary {
    --bs-btn-bg: var(--color-primary);
    --bs-btn-border-color: color-mix(in srgb, var(--brand-indigo-700) 70%, transparent);
    --bs-btn-hover-bg: var(--color-primary-hover);
    --bs-btn-hover-border-color: color-mix(in srgb, var(--brand-indigo-600) 78%, transparent);
    --bs-btn-active-bg: var(--brand-indigo-700);
    --bs-btn-active-border-color: var(--brand-indigo-700);
    --bs-btn-focus-shadow-rgb: var(--bs-primary-rgb);
  }

  /* -------------------------------------------------------------------------
     Inputs & forms
     ------------------------------------------------------------------------- */
  .ui-field .form-control,
  .ui-field .form-select {
    border-radius: var(--radius-md);
    border-color: var(--color-border-strong);
    padding-top: 1.05rem;
    padding-bottom: 1.05rem;
    transition:
      border-color var(--duration-md) var(--ease-premium),
      box-shadow var(--duration-md) var(--ease-premium),
      background-color var(--duration-md) var(--ease-premium);
  }

  .ui-field .form-floating > label {
    color: var(--color-muted);
    font-weight: 600;
  }

  .ui-field .form-control:focus,
  .ui-field .form-select:focus {
    border-color: color-mix(in srgb, var(--color-primary) 45%, var(--color-border-strong));
    box-shadow:
      0 0 0 3px color-mix(in srgb, var(--color-primary) 28%, transparent),
      0 14px 28px rgba(15, 23, 42, 0.06);
  }

  .ui-field .form-control.is-valid,
  .ui-field .form-select.is-valid {
    border-color: color-mix(in srgb, var(--brand-success) 55%, var(--color-border-strong));
  }

  .ui-field .form-control.is-valid:focus,
  .ui-field .form-select.is-valid:focus {
    box-shadow:
      0 0 0 3px color-mix(in srgb, var(--brand-success) 26%, transparent),
      0 14px 28px rgba(15, 23, 42, 0.06);
  }

  .ui-field .form-control.is-invalid,
  .ui-field .form-select.is-invalid {
    border-color: color-mix(in srgb, var(--brand-danger) 55%, var(--color-border-strong));
  }

  .ui-field .form-control.is-invalid:focus,
  .ui-field .form-select.is-invalid:focus {
    box-shadow:
      0 0 0 3px color-mix(in srgb, var(--brand-danger) 26%, transparent),
      0 14px 28px rgba(15, 23, 42, 0.06);
  }

  .ui-field .invalid-feedback,
  .ui-field .valid-feedback {
    font-weight: 600;
    font-size: var(--text-sm);
  }

  /* -------------------------------------------------------------------------
     Chips / pills
     ------------------------------------------------------------------------- */
  .ui-pill {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    padding: 0.35rem 0.65rem;
    border-radius: 999px;
    font-size: var(--text-sm);
    font-weight: 700;
    border: 1px solid var(--color-border);
    background: color-mix(in srgb, var(--color-surface) 88%, transparent);
    color: var(--color-muted);
  }

  .ui-pill--primary {
    border-color: color-mix(in srgb, var(--color-primary) 28%, transparent);
    background: color-mix(in srgb, var(--color-primary) 10%, white);
    color: var(--brand-indigo-900);
  }

  /* -------------------------------------------------------------------------
     Reduced motion
     ------------------------------------------------------------------------- */
  @media (prefers-reduced-motion: reduce) {
    .ui-icon-squircle,
    .ui-card,
    .ui-btn,
    .ui-field .form-control,
    .ui-field .form-select {
      transition-duration: 0.001ms !important;
      transition-property: none !important;
    }

    .ui-card.ui-card--interactive:hover,
    .ui-btn:hover {
      transform: none !important;
    }
  }
}