/**
 * ==============================================================================
 * SAMS UNIFIED DESIGN SYSTEM
 * National University Lipa — Student Assistant Management System
 * Shared tokens and UI components across Student, Supervisor, and Admin portals.
 * Theme: NU Navy (#003087) & NU Gold (#ffb81c) | Poppins & Inter
 * ==============================================================================
 */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&family=Poppins:wght@500;600;700;800&display=swap');

:root {
  /* -------------------------------------------------------------
     1. BRAND COLORS (National University Palette)
     ------------------------------------------------------------- */
  --nu-navy:               #003087;
  --nu-navy-dark:          #00205b;
  --nu-navy-deeper:        #001438;
  --nu-navy-light:         #0042a5;
  --nu-navy-bright:        #004aab;
  --nu-navy-rgb:           0, 48, 135;
  --nu-navy-subtle:        #eff4fc;
  --nu-navy-pale:          #dbe6f8;

  --nu-gold:               #ffb81c;
  --nu-gold-hover:         #f0a90e;
  --nu-gold-dark:          #b37b00;
  --nu-gold-light:         #fff7e6;
  --nu-gold-subtle:        #fff2d1;
  --nu-gold-rgb:           255, 184, 28;

  /* Aliases for compatibility */
  --color-primary:         var(--nu-navy);
  --color-primary-dark:    var(--nu-navy-dark);
  --color-primary-end:     var(--nu-navy-bright);
  --color-gold:            var(--nu-gold);
  --color-gold-hover:      var(--nu-gold-hover);
  --color-gold-light:      var(--nu-gold-subtle);

  /* -------------------------------------------------------------
     2. NEUTRALS & BACKGROUNDS
     ------------------------------------------------------------- */
  --color-white:           #ffffff;
  --neutral-50:            #f8fafc;
  --neutral-100:           #f1f5f9;
  --neutral-150:           #e9eef5;
  --neutral-200:           #e2e8f0;
  --neutral-300:           #cbd5e1;
  --neutral-400:           #94a3b8;
  --neutral-500:           #64748b;
  --neutral-600:           #475569;
  --neutral-700:           #334155;
  --neutral-800:           #1e293b;
  --neutral-900:           #0f172a;

  --color-bg-app:          #f8fafc;
  --color-bg-surface:      #ffffff;
  --color-border:          #e2e8f0;
  --color-border-subtle:   #f1f5f9;
  --color-border-strong:   #cbd5e1;

  --color-heading:         #0f172a;
  --color-body:            #334155;
  --color-label:           #1e293b;
  --color-muted:           #64748b;
  --color-placeholder:     #94a3b8;

  /* -------------------------------------------------------------
     3. STATUS & SEMANTIC COLORS
     ------------------------------------------------------------- */
  --color-success:         #10b981;
  --color-success-dark:    #059669;
  --color-success-bg:      #ecfdf5;
  --color-success-border:  #a7f3d0;
  --color-success-text:    #065f46;

  --color-warning:         #f59e0b;
  --color-warning-dark:    #d97706;
  --color-warning-bg:      #fffbeb;
  --color-warning-border:  #fde68a;
  --color-warning-text:    #92400e;

  --color-danger:          #ef4444;
  --color-danger-dark:     #dc2626;
  --color-danger-bg:       #fef2f2;
  --color-danger-border:   #fecaca;
  --color-danger-text:     #991b1b;

  --color-info:            #0284c7;
  --color-info-dark:       #0369a1;
  --color-info-bg:         #f0f9ff;
  --color-info-border:     #bae6fd;
  --color-info-text:       #075985;

  --color-purple:          #8b5cf6;
  --color-purple-bg:       #f5f3ff;
  --color-purple-border:   #ddd6fe;
  --color-purple-text:     #5b21b6;

  /* Attendance specific tokens */
  --status-present-bg:     #ecfdf5;
  --status-present-text:   #065f46;
  --status-present-dot:    #10b981;

  --status-late-bg:        #fffbeb;
  --status-late-text:      #92400e;
  --status-late-dot:       #f59e0b;

  --status-absent-bg:      #fef2f2;
  --status-absent-text:    #991b1b;
  --status-absent-dot:     #ef4444;

  --status-excused-bg:     #f5f3ff;
  --status-excused-text:   #5b21b6;
  --status-excused-dot:    #8b5cf6;

  --status-pending-bg:     #eff6ff;
  --status-pending-text:   #1e40af;
  --status-pending-dot:    #3b82f6;

  /* -------------------------------------------------------------
     4. GRADIENTS
     ------------------------------------------------------------- */
  --grad-navy:             linear-gradient(135deg, #00205b 0%, #003087 55%, #004aab 100%);
  --grad-navy-light:       linear-gradient(135deg, #003087 0%, #004aab 100%);
  --grad-gold:             linear-gradient(135deg, #ffb81c 0%, #f5ab0c 100%);
  --grad-gold-subtle:      linear-gradient(135deg, #fff7e6 0%, #ffe9b8 100%);
  --grad-page:             linear-gradient(149deg, #eff4fc 0%, #ffffff 50%, #fffbf0 100%);
  --grad-hero:             linear-gradient(135deg, #00163e 0%, #003087 60%, #0042a5 100%);
  --gradient-brand:        linear-gradient(135deg, #003087 0%, #004aab 100%);

  /* -------------------------------------------------------------
     5. TYPOGRAPHY
     ------------------------------------------------------------- */
  --font-sans:             'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  --font-display:          'Poppins', 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono:             'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;

  --font-xs:               12px;
  --font-sm:               14px;
  --font-base:             16px;
  --font-md:               18px;
  --font-lg:               20px;
  --font-xl:               24px;
  --font-2xl:              28px;
  --font-3xl:              32px;
  --font-4xl:              40px;

  /* -------------------------------------------------------------
     6. ELEVATION & SHADOWS
     ------------------------------------------------------------- */
  --shadow-xs:             0 1px 2px 0 rgba(15, 23, 42, 0.05);
  --shadow-sm:             0 1px 3px 0 rgba(15, 23, 42, 0.08), 0 1px 2px -1px rgba(15, 23, 42, 0.06);
  --shadow-md:             0 4px 8px -2px rgba(15, 23, 42, 0.08), 0 2px 4px -2px rgba(15, 23, 42, 0.06);
  --shadow-lg:             0 10px 18px -3px rgba(15, 23, 42, 0.08), 0 4px 6px -4px rgba(15, 23, 42, 0.04);
  --shadow-xl:             0 20px 25px -5px rgba(15, 23, 42, 0.10), 0 8px 10px -6px rgba(15, 23, 42, 0.04);
  --shadow-navy:           0 10px 24px -4px rgba(0, 48, 135, 0.28);
  --shadow-gold:           0 8px 20px -3px rgba(255, 184, 28, 0.36);
  --shadow-card:           0 1px 3px 0 rgba(15, 23, 42, 0.06), 0 1px 2px -1px rgba(15, 23, 42, 0.04);
  --shadow-card-hover:     0 12px 24px -4px rgba(15, 23, 42, 0.09), 0 4px 8px -2px rgba(15, 23, 42, 0.05);

  /* -------------------------------------------------------------
     7. RADIUS SCALE
     ------------------------------------------------------------- */
  --radius-xs:             6px;
  --radius-sm:             8px;
  --radius-md:             12px;
  --radius-lg:             16px;
  --radius-xl:             20px;
  --radius-2xl:            24px;
  --radius-full:           9999px;
  --radius-card:           16px;
  --radius-pill:           9999px;

  /* -------------------------------------------------------------
     8. SHELL & LAYOUT DIMENSIONS
     ------------------------------------------------------------- */
  --sidebar-width:         264px;
  --sidebar-collapsed:     76px;
  --topbar-height:         76px;
  --sams-shell-brand-size: 42px;
  --sams-shell-brand-radius: 12px;
  --sams-shell-brand-gap:  12px;
  --sams-shell-brand-padding-y: 20px;
  --sams-shell-brand-padding-x: 22px;
  --sams-shell-topbar-height: var(--topbar-height);
  --sams-shell-topbar-padding-x: 32px;
}

/* =============================================================
   BASE RESET & TYPOGRAPHY FOUNDATION
   ============================================================= */
*, *::before, *::after {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: var(--font-base);
  line-height: 1.5;
  color: var(--color-body);
  background-color: var(--color-bg-app);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  color: var(--color-heading);
  margin-top: 0;
  margin-bottom: 0.5rem;
  font-weight: 700;
  line-height: 1.25;
}

p {
  margin-top: 0;
  margin-bottom: 1rem;
}

a {
  color: var(--nu-navy);
  text-decoration: none;
  transition: color 0.15s ease;
}

a:hover {
  color: var(--nu-navy-light);
}

/* =============================================================
   BUTTONS (.btn, .sams-btn)
   ============================================================= */
.btn, .sams-btn, .primary, .secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-family: var(--font-sans);
  font-size: var(--font-sm);
  font-weight: 600;
  line-height: 1;
  padding: 10px 18px;
  min-height: 42px;
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  cursor: pointer;
  text-decoration: none;
  transition: background-color 0.18s ease,
              border-color 0.18s ease,
              color 0.18s ease,
              box-shadow 0.18s ease,
              transform 0.18s ease;
  user-select: none;
  white-space: nowrap;
}

.btn:hover, .sams-btn:hover, .primary:hover {
  transform: translateY(-1px);
}

.btn:active, .sams-btn:active, .primary:active {
  transform: translateY(0);
}

.btn:focus-visible, .sams-btn:focus-visible {
  outline: 2px solid var(--nu-gold);
  outline-offset: 2px;
}

/* Primary Navy Button */
.btn--primary, .primary, .btn-primary {
  background-color: var(--nu-navy);
  color: var(--color-white) !important;
  border-color: var(--nu-navy);
  box-shadow: 0 2px 4px rgba(0, 48, 135, 0.15);
}

.btn--primary:hover, .primary:hover, .btn-primary:hover {
  background-color: var(--nu-navy-light);
  border-color: var(--nu-navy-light);
  box-shadow: var(--shadow-navy);
}

/* Gold Accent Button (High impact CTAs) */
.btn--gold, .btn-gold {
  background: var(--nu-gold);
  color: var(--nu-navy-deeper) !important;
  font-weight: 700;
  border-color: var(--nu-gold);
  box-shadow: 0 2px 4px rgba(255, 184, 28, 0.25);
}

.btn--gold:hover, .btn-gold:hover {
  background-color: var(--nu-gold-hover);
  border-color: var(--nu-gold-hover);
  box-shadow: var(--shadow-gold);
}

/* Secondary / Outline Button */
.btn--secondary, .secondary, .btn-secondary, .btn--outline {
  background-color: var(--color-white);
  color: var(--neutral-700) !important;
  border-color: var(--neutral-200);
}

.btn--secondary:hover, .secondary:hover, .btn-secondary:hover, .btn--outline:hover {
  background-color: var(--neutral-50);
  border-color: var(--neutral-300);
  color: var(--nu-navy) !important;
}

/* Subtle / Ghost Button */
.btn--ghost {
  background-color: transparent;
  color: var(--neutral-600) !important;
  border-color: transparent;
}

.btn--ghost:hover {
  background-color: var(--neutral-100);
  color: var(--neutral-900) !important;
}

/* Danger Button */
.btn--danger, .btn-danger {
  background-color: var(--color-danger);
  color: var(--color-white) !important;
  border-color: var(--color-danger);
}

.btn--danger:hover, .btn-danger:hover {
  background-color: var(--color-danger-dark);
  border-color: var(--color-danger-dark);
}

/* Danger Subtle */
.btn--danger-subtle {
  background-color: var(--color-danger-bg);
  color: var(--color-danger-text) !important;
  border-color: var(--color-danger-border);
}

.btn--danger-subtle:hover {
  background-color: #fee2e2;
}

/* Success Button */
.btn--success, .btn-success {
  background-color: var(--color-success);
  color: var(--color-white) !important;
  border-color: var(--color-success);
}

.btn--success:hover, .btn-success:hover {
  background-color: var(--color-success-dark);
  border-color: var(--color-success-dark);
}

/* Sizes */
.btn--sm {
  padding: 6px 12px;
  min-height: 32px;
  font-size: var(--font-xs);
  border-radius: var(--radius-sm);
}

.btn--lg {
  padding: 12px 24px;
  min-height: 48px;
  font-size: var(--font-base);
  border-radius: var(--radius-md);
}

.btn--icon {
  padding: 8px;
  width: 40px;
  height: 40px;
  min-height: 40px;
  border-radius: var(--radius-md);
}

/* =============================================================
   CARDS & PANELS (.card, .sams-card)
   ============================================================= */
.card, .sams-card {
  background-color: var(--color-bg-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  padding: 24px;
  box-shadow: var(--shadow-card);
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}

.card--hoverable:hover, .report-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-card-hover);
  border-color: var(--neutral-300);
}

/* Gold Accent Top Ribbon */
.card--gold-ribbon {
  position: relative;
  overflow: hidden;
}

.card--gold-ribbon::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--nu-gold);
}

/* Brand Navy Card */
.card--navy {
  background: var(--grad-navy);
  color: var(--color-white);
  border-color: transparent;
  box-shadow: var(--shadow-navy);
}

.card--navy h1, .card--navy h2, .card--navy h3 {
  color: var(--color-white);
}

.card--navy p {
  color: rgba(255, 255, 255, 0.85);
}

.card__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--color-border);
}

.card__title {
  font-family: var(--font-display);
  font-size: var(--font-md);
  font-weight: 700;
  color: var(--color-heading);
  margin: 0;
}

.card__subtitle {
  font-size: var(--font-xs);
  color: var(--color-muted);
  margin-top: 2px;
  margin-bottom: 0;
}

/* =============================================================
   BADGES & STATUS PILLS (.badge, .status-badge, .metric-pill)
   ============================================================= */
.badge, .sams-badge, .status-badge, .metric-pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  font-size: var(--font-xs);
  font-weight: 600;
  line-height: 1.25;
  border-radius: var(--radius-full);
  border: 1px solid transparent;
  white-space: nowrap;
}

.badge--dot::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
  display: inline-block;
  background-color: currentColor;
}

/* Status variants */
.badge--present, .badge--completed, .badge--approved, .metric-pill--present {
  background-color: var(--status-present-bg);
  color: var(--status-present-text);
  border-color: var(--color-success-border);
}

.badge--late, .badge--warning, .metric-pill--late {
  background-color: var(--status-late-bg);
  color: var(--status-late-text);
  border-color: var(--color-warning-border);
}

.badge--absent, .badge--danger, .badge--declined, .metric-pill--absent {
  background-color: var(--status-absent-bg);
  color: var(--status-absent-text);
  border-color: var(--color-danger-border);
}

.badge--excused {
  background-color: var(--status-excused-bg);
  color: var(--status-excused-text);
  border-color: var(--color-purple-border);
}

.badge--pending, .badge--info {
  background-color: var(--status-pending-bg);
  color: var(--status-pending-text);
  border-color: var(--color-info-border);
}

.badge--navy {
  background-color: var(--nu-navy-subtle);
  color: var(--nu-navy);
  border-color: var(--nu-navy-pale);
}

.badge--gold {
  background-color: var(--nu-gold-light);
  color: var(--nu-gold-dark);
  border-color: var(--nu-gold-subtle);
}

/* =============================================================
   FORM INPUTS & CONTROLS
   ============================================================= */
.form-group, .field {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: 16px;
}

.form-label, .field label {
  font-size: var(--font-sm);
  font-weight: 600;
  color: var(--color-label);
  line-height: 1.3;
}

.form-label--required::after {
  content: ' *';
  color: var(--color-danger);
}

.form-input, .form-select, .form-textarea,
.field input, .field select, .field textarea {
  width: 100%;
  min-height: 42px;
  padding: 10px 14px;
  font-family: var(--font-sans);
  font-size: var(--font-sm);
  color: var(--neutral-800);
  background-color: var(--color-white);
  border: 1px solid var(--neutral-300);
  border-radius: var(--radius-md);
  transition: border-color 0.18s ease, box-shadow 0.18s ease, background-color 0.18s ease;
}

.form-input::placeholder, .form-textarea::placeholder,
.field input::placeholder, .field textarea::placeholder {
  color: var(--color-placeholder);
}

.form-input:focus, .form-select:focus, .form-textarea:focus,
.field input:focus, .field select:focus, .field textarea:focus {
  outline: none;
  border-color: var(--nu-navy);
  box-shadow: 0 0 0 3px rgba(0, 48, 135, 0.14);
}

.form-input--error, .field input.is-invalid {
  border-color: var(--color-danger);
  background-color: var(--color-danger-bg);
}

.form-input--error:focus {
  box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.15);
}

.form-help, .field-hint {
  font-size: var(--font-xs);
  color: var(--color-muted);
}

.form-error, .field-error {
  font-size: var(--font-xs);
  font-weight: 600;
  color: var(--color-danger-dark);
}

/* =============================================================
   STAT TILES & METRIC CARDS (.tile, .stat-tile, .stat-card)
   ============================================================= */
.stat-tile, .tile {
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  padding: 20px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  min-height: 110px;
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}

.stat-tile:hover, .tile:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-card-hover);
}

.stat-tile__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 8px;
}

.stat-tile__label, .tile span {
  font-size: var(--font-xs);
  font-weight: 600;
  color: var(--color-muted);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-bottom: 4px;
}

.stat-tile__value, .tile strong {
  font-family: var(--font-display);
  font-size: var(--font-2xl);
  font-weight: 700;
  color: var(--color-heading);
  line-height: 1.1;
}

.stat-tile__icon {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  display: grid;
  place-items: center;
  background-color: var(--nu-navy-subtle);
  color: var(--nu-navy);
}

/* =============================================================
   SHELL (Sidebar + Topbar + Content Layout)
   ============================================================= */
.shell, .sams-shell {
  display: flex;
  width: 100%;
  min-height: 100vh;
  background-color: var(--color-bg-app);
}

.sidebar {
  width: var(--sidebar-width);
  min-height: 100vh;
  background-color: var(--color-white);
  border-right: 1px solid var(--color-border);
  display: flex;
  flex-direction: column;
  position: sticky;
  top: 0;
  height: 100vh;
  overflow-y: auto;
  z-index: 40;
}

.sidebar__brand {
  display: flex;
  align-items: center;
  gap: var(--sams-shell-brand-gap);
  padding: var(--sams-shell-brand-padding-y) var(--sams-shell-brand-padding-x);
  border-bottom: 1px solid var(--color-border);
}

.sidebar__logo {
  width: var(--sams-shell-brand-size);
  height: var(--sams-shell-brand-size);
  border-radius: var(--sams-shell-brand-radius);
  background: var(--grad-navy);
  color: var(--nu-gold);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  font-weight: 800;
  font-size: 18px;
  box-shadow: 0 4px 10px rgba(0, 48, 135, 0.25);
}

.sidebar__brand-name {
  font-family: var(--font-display);
  font-size: var(--font-base);
  font-weight: 700;
  color: var(--nu-navy);
  line-height: 1.2;
}

.sidebar__brand-sub {
  font-size: var(--font-xs);
  color: var(--color-muted);
  font-weight: 500;
}

.sidebar__nav {
  flex: 1;
  padding: 16px 14px;
  display: flex;
  flex-direction: column;
  gap: 4px;
  overflow-y: auto;
}

.sidebar__nav-link {
  display: flex;
  align-items: center;
  gap: 12px;
  height: 46px;
  padding: 0 14px;
  border-radius: var(--radius-md);
  font-size: var(--font-sm);
  font-weight: 600;
  color: var(--neutral-600);
  border: 1px solid transparent;
  transition: all 0.18s ease;
  white-space: nowrap;
}

.sidebar__nav-link:hover {
  background-color: var(--nu-navy-subtle);
  color: var(--nu-navy);
  transform: translateX(2px);
}

.sidebar__nav-link--active {
  background: var(--nu-navy) !important;
  color: var(--color-white) !important;
  box-shadow: var(--shadow-navy);
}

.sidebar__nav-link--active .sidebar__nav-icon,
.sidebar__nav-link--active svg {
  color: var(--nu-gold) !important;
  stroke: var(--nu-gold) !important;
}

.sidebar__nav-icon {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.sidebar__footer {
  border-top: 1px solid var(--color-border);
  padding: 14px;
  display: flex;
  flex-direction: column;
  gap: 4px;
  flex-shrink: 0;
  background-color: var(--neutral-50);
}

/* Main Content & Topbar */
.main {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
}

.topbar {
  background-color: var(--color-white);
  border-bottom: 1px solid var(--color-border);
  min-height: var(--topbar-height);
  padding: 0 var(--sams-shell-topbar-padding-x);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  position: sticky;
  top: 0;
  z-index: 30;
}

.topbar__heading {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.topbar__title {
  font-family: var(--font-display);
  font-size: var(--font-lg);
  font-weight: 700;
  color: var(--color-heading);
  margin: 0;
}

.topbar__sub, .topbar__subtitle {
  font-size: var(--font-xs);
  color: var(--color-muted);
  margin: 0;
}

.topbar__actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.page {
  flex: 1;
  padding: 28px 32px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

/* =============================================================
   UTILITIES
   ============================================================= */
.flex-between { display: flex; justify-content: space-between; align-items: center; }
.flex-row { display: flex; gap: 8px; flex-wrap: wrap; }
.align-center { display: flex; align-items: center; }
.gap-8 { gap: 8px; }
.gap-12 { gap: 12px; }
.gap-16 { gap: 16px; }

.mt-4 { margin-top: 4px; }
.mt-8 { margin-top: 8px; }
.mt-12 { margin-top: 12px; }
.mt-16 { margin-top: 16px; }
.mt-20 { margin-top: 20px; }
.mb-0 { margin-bottom: 0 !important; }
.mb-8 { margin-bottom: 8px; }
.mb-16 { margin-bottom: 16px; }

.text-right { text-align: right; }
.text-center { text-align: center; }
.text-muted { color: var(--color-muted); }
.text-gold { color: var(--nu-gold-dark); }
.text-navy { color: var(--nu-navy); }

.pre-wrap { white-space: pre-wrap; }
.hidden { display: none !important; }
.no-decor { text-decoration: none; color: inherit; }

/* Grid systems */
.grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.grid--2 {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.grid--4 {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

/* Responsive adjustments */
@media (max-width: 1024px) {
  .grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .grid--4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .page { padding: 20px; }
  .topbar { padding: 0 20px; }
}

@media (max-width: 768px) {
  .grid, .grid--2, .grid--4 { grid-template-columns: 1fr; }
  .sidebar {
    position: fixed;
    transform: translateX(-100%);
    transition: transform 0.25s ease;
  }
  .sidebar.is-open {
    transform: translateX(0);
  }
}