/* ============================================================================
   premium.css — "Premium Modern" design layer (2026-06)

   A self-contained design layer that gives the whole app a refined, modern
   premium-SaaS feel: layered realistic shadows, hairline borders, calm
   surface gradients, refined typography, and tasteful micro-motion.

   How it works
   ------------
   • Loaded LAST in header.php (after simple.css) so its rules win the cascade.
   • Gated behind  html[data-design="premium"]  — set by the pre-paint script
     from the `land_design` cookie. "premium" is the default for new visitors.
   • 100% self-contained: every override lives under [data-design="premium"],
     so simple/rich designs are completely untouched. To revert globally, set
     cookie land_design=simple (or rich), or remove the <link> in header.php.

   Design spectrum
   ---------------
     Simple   — flat, calm, content-first (simple.css)
     Premium  — refined depth + polish (THIS FILE)         ← default
     Rich     — maximal gradients, glow, depth (app.css base)

   Design intent
   -------------
   Quiet confidence. Depth is implied with soft, layered light rather than
   heavy drop-shadows. Surfaces are solid with a single faint top highlight.
   Brand colour leads actions; neutrals do the heavy lifting. Motion is small,
   fast, and purposeful — never decorative.
   ============================================================================ */

/* ── 1. Token refinements — reshape everything token-driven ──────────────── */
html[data-design="premium"] {
  /* Refined neutral surfaces — a touch cooler & cleaner */
  --bg:            #f6f8fc;
  --bg-elev:       #ffffff;
  --bg-muted:      #eef2f8;
  --bg-subtle:     #fbfcfe;
  --border:        #e7ebf2;
  --border-strong: #d2d9e4;
  --text:          #0b1727;
  --text-muted:    #54637a;
  --text-faint:    #98a4b8;

  /* Layered, realistic elevation — ambient + key light, low opacity */
  --shadow-xs:   0 1px 1px rgba(15,28,50,.04);
  --shadow-sm:   0 1px 2px rgba(15,28,50,.05), 0 1px 1px rgba(15,28,50,.03);
  --shadow:      0 2px 4px rgba(15,28,50,.05), 0 4px 12px -4px rgba(15,28,50,.08);
  --shadow-md:   0 4px 8px rgba(15,28,50,.05), 0 12px 24px -8px rgba(15,28,50,.10);
  --shadow-lg:   0 8px 16px rgba(15,28,50,.06), 0 24px 48px -12px rgba(15,28,50,.14);
  --shadow-xl:   0 16px 32px rgba(15,28,50,.08), 0 40px 72px -16px rgba(15,28,50,.18);
  --shadow-brand:0 2px 6px rgba(var(--brand-rgb),.22), 0 10px 24px -8px rgba(var(--brand-rgb),.40);

  /* Consistent, slightly larger corner family for a softer modern feel */
  --radius-sm:  8px;
  --radius:     12px;
  --radius-lg:  16px;
  --radius-xl:  20px;

  /* Premium motion — quick, springy, purposeful */
  --ease:        cubic-bezier(.4, 0, .2, 1);
  --ease-out:    cubic-bezier(.16, 1, .3, 1);
  --trans:       160ms var(--ease);

  /* Hairline ring used for crisp 1px separation on elevated surfaces */
  --ring: inset 0 0 0 1px var(--border);
}

html[data-design="premium"][data-theme="dark"] {
  --bg:            #0a1020;
  --bg-elev:       #111a2e;
  --bg-muted:      #18233b;
  --bg-subtle:     #0d1525;
  --border:        #1e2b48;
  --border-strong: #2a3a5c;
  --text:          #eaf0f9;
  --text-muted:    #93a3c2;
  --text-faint:    #5a6c8e;

  --shadow-sm:   0 1px 2px rgba(0,0,0,.45);
  --shadow:      0 2px 4px rgba(0,0,0,.4), 0 6px 16px -4px rgba(0,0,0,.5);
  --shadow-md:   0 4px 8px rgba(0,0,0,.45), 0 14px 28px -8px rgba(0,0,0,.6);
  --shadow-lg:   0 10px 20px rgba(0,0,0,.5), 0 28px 56px -12px rgba(0,0,0,.7);
  --shadow-xl:   0 18px 36px rgba(0,0,0,.55), 0 48px 80px -16px rgba(0,0,0,.75);
  --ring: inset 0 0 0 1px rgba(255,255,255,.04);
}

/* ── 2. Typography — refined scale, tighter display tracking ─────────────── */
html[data-design="premium"] body {
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  letter-spacing: -.006em;
}
html[data-design="premium"] h1,
html[data-design="premium"] h2,
html[data-design="premium"] h3,
html[data-design="premium"] .page-hero__title,
html[data-design="premium"] .section-header h2 {
  letter-spacing: -.021em;
  font-weight: 700;
}
html[data-design="premium"] h1 { line-height: 1.18; }
html[data-design="premium"] .text-muted,
html[data-design="premium"] small { color: var(--text-muted); }

/* Gradient text headings stay crisp & readable in premium */
html[data-design="premium"] .page-hero__title {
  background: none !important;
  -webkit-text-fill-color: currentColor !important;
  color: var(--text) !important;
}

/* ── 3. Surfaces — solid, hairline-ringed, soft layered lift ─────────────── */
html[data-design="premium"] .card,
html[data-design="premium"] .panel,
html[data-design="premium"] .widget,
html[data-design="premium"] .kpi,
html[data-design="premium"] .kpi-card,
html[data-design="premium"] .stat-card,
html[data-design="premium"] .sp-card,
html[data-design="premium"] .team-card,
html[data-design="premium"] .legal-content,
html[data-design="premium"] .legal-toc {
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  background-image: none;
}

/* A single faint top highlight gives surfaces a premium sheen without noise */
html[data-design="premium"] .card,
html[data-design="premium"] .panel,
html[data-design="premium"] .kpi-card,
html[data-design="premium"] .stat-card {
  background-image: linear-gradient(180deg,
                    rgba(255,255,255,.5) 0%,
                    rgba(255,255,255,0) 38%);
}
html[data-design="premium"][data-theme="dark"] .card,
html[data-design="premium"][data-theme="dark"] .panel,
html[data-design="premium"][data-theme="dark"] .kpi-card,
html[data-design="premium"][data-theme="dark"] .stat-card {
  background-image: linear-gradient(180deg,
                    rgba(255,255,255,.035) 0%,
                    rgba(255,255,255,0) 40%);
}

/* Refined card header — quiet, with hairline divider */
html[data-design="premium"] .card__header {
  background: transparent;
  background-image: none;
  border-bottom: 1px solid var(--border);
  letter-spacing: -.012em;
}

/* Smooth, restrained hover lift on interactive surfaces */
html[data-design="premium"] .card,
html[data-design="premium"] .kpi-card,
html[data-design="premium"] .stat-card {
  transition: box-shadow .22s var(--ease-out),
              transform   .22s var(--ease-out),
              border-color .22s var(--ease);
}
html[data-design="premium"] .card:hover,
html[data-design="premium"] .card--lift:hover,
html[data-design="premium"] .kpi:hover,
html[data-design="premium"] .kpi-card:hover,
html[data-design="premium"] .stat-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
  border-color: var(--border-strong);
}

/* ── 4. Page hero — soft brand-tinted band with one quiet sheen ──────────── */
html[data-design="premium"] .page-hero {
  background:
    radial-gradient(120% 140% at 0% 0%,
      rgba(var(--brand-rgb), .06) 0%, transparent 55%),
    var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
}
html[data-design="premium"] .page-hero__icon {
  background: var(--grad-brand, linear-gradient(135deg, var(--brand), var(--brand-600)));
  box-shadow: var(--shadow-brand);
  color: #fff;
}

/* ── 5. Sidebar — keep its depth, refine the active state ────────────────── */
html[data-design="premium"] .sidebar__link {
  border-radius: var(--radius-sm);
  transition: background var(--trans), color var(--trans);
}
html[data-design="premium"] .sidebar__link.is-active {
  background: rgba(var(--brand-rgb), .16);
  box-shadow: inset 3px 0 0 var(--brand);
}

/* ── 6. Topbar — refined glass, hairline base ────────────────────────────── */
html[data-design="premium"] .topbar {
  border-bottom: 1px solid var(--border);
  box-shadow: 0 1px 0 rgba(15,28,50,.02);
}

/* ── 7. Buttons — refined fills, crisp shadow, springy press ─────────────── */
html[data-design="premium"] .btn {
  border-radius: var(--radius-sm);
  font-weight: 600;
  letter-spacing: -.006em;
  transition: background var(--trans), border-color var(--trans),
              transform 120ms var(--ease-out), box-shadow var(--trans), color var(--trans);
}
html[data-design="premium"] .btn:active { transform: translateY(1px); }

html[data-design="premium"] .btn-primary,
html[data-design="premium"] .btn--primary,
html[data-design="premium"] .btn-auth-submit {
  background: var(--grad-brand, linear-gradient(135deg, var(--brand), var(--brand-600)));
  border-color: transparent;
  color: #fff;
  box-shadow: 0 1px 2px rgba(var(--brand-rgb), .25), 0 2px 8px -2px rgba(var(--brand-rgb), .35);
}
html[data-design="premium"] .btn-primary:hover,
html[data-design="premium"] .btn--primary:hover,
html[data-design="premium"] .btn-auth-submit:hover {
  filter: brightness(1.04);
  box-shadow: var(--shadow-brand);
  transform: translateY(-1px);
}

/* Secondary / ghost buttons — clean neutral surface */
html[data-design="premium"] .btn-outline { border-width: 1.5px; }
html[data-design="premium"] .btn:focus-visible {
  outline: none;
  box-shadow: 0 0 0 3px rgba(var(--brand-rgb), .35);
}

/* ── 8. Tabs / pills — quiet rail with a confident active underline ──────── */
html[data-design="premium"] .page-tabs {
  background: transparent;
  background-image: none;
  border-bottom: 1px solid var(--border);
  box-shadow: none;
}
html[data-design="premium"] .page-tabs__item {
  transition: color var(--trans), box-shadow var(--trans);
}
html[data-design="premium"] .page-tabs__item.is-active {
  background: transparent;
  color: var(--brand);
  box-shadow: inset 0 -2px 0 var(--brand);
}

/* ── 9. Badges / chips — flat refined tints ──────────────────────────────── */
html[data-design="premium"] .badge,
html[data-design="premium"] .chip {
  background-image: none;
  box-shadow: none;
  border-radius: 999px;
  font-weight: 600;
  letter-spacing: .002em;
}

/* ── 10. Modals / dropdowns / popovers — clean elevated panels ───────────── */
html[data-design="premium"] .modal,
html[data-design="premium"] .modal__panel,
html[data-design="premium"] .dropdown-menu,
html[data-design="premium"] .popover {
  background: var(--bg-elev);
  background-image: none;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
}

/* ── 11. Inputs — calm field, confident focus ring ───────────────────────── */
html[data-design="premium"] .form-control,
html[data-design="premium"] .form-select {
  border-radius: var(--radius-sm);
  transition: border-color var(--trans), box-shadow var(--trans), background var(--trans);
}
html[data-design="premium"] .form-control:focus,
html[data-design="premium"] .form-select:focus {
  border-color: var(--brand);
  box-shadow: 0 0 0 3px rgba(var(--brand-rgb), .16);
}

/* ── 12. Tables — quiet header, soft row hover ───────────────────────────── */
html[data-design="premium"] .table thead th {
  background: var(--bg-muted);
  background-image: none;
  color: var(--text-muted);
  font-weight: 600;
  letter-spacing: .01em;
  text-transform: uppercase;
  font-size: .72rem;
}
html[data-design="premium"] .table tbody tr {
  transition: background var(--trans);
}
html[data-design="premium"] .table tbody tr:hover {
  background: rgba(var(--brand-rgb), .035);
}

/* ── 13. Scrollbar — slimmer, brand-tinted on hover ──────────────────────── */
html[data-design="premium"] ::-webkit-scrollbar-thumb {
  background: var(--border-strong);
  border-radius: 999px;
}
html[data-design="premium"] ::-webkit-scrollbar-thumb:hover {
  background: rgba(var(--brand-rgb), .55);
}

/* ── 14. Lite mode & reduced motion — strip the extras ───────────────────── */
html[data-design="premium"][data-lite="1"] .card,
html[data-design="premium"][data-lite="1"] .panel,
html[data-design="premium"][data-lite="1"] .kpi-card,
html[data-design="premium"][data-lite="1"] .stat-card {
  background-image: none;
  box-shadow: var(--shadow-sm);
}
html[data-design="premium"][data-lite="1"] .card:hover,
html[data-design="premium"][data-lite="1"] .kpi-card:hover,
html[data-design="premium"][data-lite="1"] .stat-card:hover {
  transform: none;
}
@media (prefers-reduced-motion: reduce) {
  html[data-design="premium"] .card:hover,
  html[data-design="premium"] .kpi-card:hover,
  html[data-design="premium"] .stat-card:hover,
  html[data-design="premium"] .btn-primary:hover { transform: none; }
  html[data-design="premium"] * { animation-duration: .001ms !important; }
}