/* ─────────────────────────────────────────────
   Crystal AI Club — Shared components
   ───────────────────────────────────────────── */

*, *::before, *::after { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }

body {
  font-family: var(--font-sans);
  font-size: var(--t-body);
  line-height: 1.5;
  color: var(--ink);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  font-feature-settings: "ss01", "cv11";
  overflow-x: hidden;
}

/* Aurora layer behind the page */
.aurora {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  background:
    var(--aurora-1),
    var(--aurora-2),
    var(--aurora-3),
    var(--bg);
  filter: saturate(115%);
  animation: auroraBreath 18s var(--ease-in-out, ease-in-out) infinite;
  will-change: transform, opacity;
}
/* slow ambient drift — gives the canvas life; disabled under reduced motion */
@keyframes auroraBreath {
  0%, 100% { transform: scale(1) translate3d(0, 0, 0);       opacity: 0.9; }
  50%      { transform: scale(1.08) translate3d(0, -1.5%, 0); opacity: 1; }
}

.grain {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 1;
  opacity: 0.025;
  mix-blend-mode: overlay;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='3'/%3E%3CfeColorMatrix values='0 0 0 0 1  0 0 0 0 1  0 0 0 0 1  0 0 0 1 0'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}
/* White noise on `overlay` only brightens — invisible against a near-white
   canvas. Light mode needs the opposite: dark noise on `multiply`, so the
   film-grain "physical paper" texture actually reads. */
:root[data-theme="light"] .grain {
  opacity: 0.045;
  mix-blend-mode: multiply;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='3'/%3E%3CfeColorMatrix values='0 0 0 0 0  0 0 0 0 0  0 0 0 0 0  0 0 0 1 0'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

/* ── Type ──────────────────────────────────── */
.t-display, .t-h1, .t-h2, .t-h3 {
  margin: 0;
  letter-spacing: -0.025em;
  line-height: 1.02;
  font-weight: 500;
  text-wrap: balance;
}
.t-display { font-size: var(--t-display); letter-spacing: -0.04em; line-height: 0.96; font-weight: 500; }
.t-h1      { font-size: var(--t-h1);      letter-spacing: -0.03em; }
.t-h2      { font-size: var(--t-h2);      letter-spacing: -0.025em; }
.t-h3      { font-size: var(--t-h3);      letter-spacing: -0.015em; line-height: 1.25; }

.t-serif-italic {
  font-family: var(--font-serif);
  font-style: italic;
  font-weight: 400;
  letter-spacing: -0.01em;
}

.t-mono { font-family: var(--font-mono); }

.t-eyebrow {
  font-family: var(--font-mono);
  font-size: var(--t-micro);
  font-weight: 400;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ink-muted);
}

.t-eyebrow .dot {
  display: inline-block;
  width: 6px; height: 6px;
  border-radius: 999px;
  background: var(--orange-500);
  box-shadow: 0 0 10px var(--orange-500);
  margin-inline-end: 8px;
  vertical-align: 1px;
  animation: pulse 2.4s var(--ease-out) infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 0.6; transform: scale(1); }
  50%      { opacity: 1; transform: scale(1.2); }
}

.t-lead {
  font-size: clamp(17px, 1.5vw, 21px);
  line-height: 1.5;
  color: var(--ink-muted);
  max-width: 56ch;
  text-wrap: pretty;
}

.t-muted { color: var(--ink-muted); }
.t-faint { color: var(--ink-faint); }
.t-orange { color: var(--orange-icon); }

a { color: inherit; text-decoration: none; }

/* ── Buttons ──────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 28px;
  font: 600 14px/1 var(--font-sans);
  letter-spacing: -0.01em;
  border-radius: var(--radius-pill);
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform var(--dur-fast) var(--ease-out),
              background var(--dur-fast) var(--ease-out),
              box-shadow var(--dur-med) var(--ease-out),
              color var(--dur-fast) var(--ease-out);
  text-decoration: none;
  white-space: nowrap;
}
/* press = subtle scale-down: instant "it heard me" feedback */
.btn:active { transform: scale(0.97); }
.btn[aria-disabled="true"] {
  opacity: 0.55;
  cursor: not-allowed;
  pointer-events: none;
}

.btn-primary {
  position: relative;
  overflow: hidden;
  background: var(--grad-orange);
  color: white;
  box-shadow: 0 0 0 1px color-mix(in oklab, var(--orange-300) 70%, transparent) inset,
              0 1px 0 rgba(255,255,255,0.25) inset,
              0 8px 24px -8px rgba(249,115,22,calc(0.55 * var(--glow-intensity)));
  font-weight: 600;
}
/* light sweep on hover */
.btn-primary::after {
  content: "";
  position: absolute;
  inset: 0;
  background: var(--sheen);
  transform: translateX(-130%);
  transition: transform var(--dur-slow) var(--ease-out);
  pointer-events: none;
}
.btn-primary:hover {
  filter: brightness(1.06);
  box-shadow: 0 0 0 1px var(--orange-300) inset,
              0 1px 0 rgba(255,255,255,0.3) inset,
              0 14px 40px -10px rgba(249,115,22,calc(0.8 * var(--glow-intensity)));
  transform: translateY(-1px);
}
.btn-primary:hover::after { transform: translateX(130%); }
:root[dir="rtl"] .btn-primary::after { transform: translateX(130%); }
:root[dir="rtl"] .btn-primary:hover::after { transform: translateX(-130%); }
@media (prefers-reduced-motion: reduce) { .btn-primary::after { display: none; } }

.btn-glass {
  background: var(--glass-bg);
  backdrop-filter: blur(var(--blur-intensity)) saturate(140%);
  -webkit-backdrop-filter: blur(var(--blur-intensity)) saturate(140%);
  color: var(--ink);
  border-color: var(--border-strong);
  box-shadow: var(--glass-shadow);
}
.btn-glass:hover {
  background: var(--surface);
  transform: translateY(-1px);
}

.btn-ghost {
  background: transparent;
  color: var(--ink-muted);
  padding-inline: 10px;
}
.btn-ghost:hover { color: var(--ink); }

.btn-sm { padding: 8px 12px; font-size: 13px; }
.btn-lg { padding: 16px 22px; font-size: 15px; }

/* shortcut chip inside buttons / inputs */
.kbd {
  display: inline-flex;
  align-items: center;
  padding: 2px 6px;
  height: 20px;
  border-radius: 5px;
  font: 500 11px/1 var(--font-mono);
  color: var(--ink-muted);
  background: color-mix(in oklab, var(--ink) 8%, transparent);
  border: 1px solid var(--hairline);
}

/* ── Glass surface ────────────────────────── */
.glass {
  background: var(--card-glass-bg);
  border: 1px solid var(--border);
  backdrop-filter: blur(48px) saturate(200%);
  -webkit-backdrop-filter: blur(48px) saturate(200%);
  border-radius: var(--radius-xl);
  box-shadow: var(--card-glass-shadow);
  position: relative;
}
/* Touch devices: heavy backdrop blur on scrolling cards costs continuous GPU
   repaints. The canvas behind cards is soft gradients, so a lighter blur is
   visually identical and far cheaper. */
@media (pointer: coarse) {
  .glass {
    backdrop-filter: blur(20px) saturate(160%);
    -webkit-backdrop-filter: blur(20px) saturate(160%);
  }
}
/* Hover-lift is a pointer affordance — on touch it only makes taps feel
   glitchy (sticky hover). Neutralize transform lifts for coarse pointers. */
@media (hover: none), (pointer: coarse) {
  .glass-hover:hover,
  .btn:hover,
  .btn-primary:hover,
  .btn-glass:hover { transform: none; }
}

/* highlight rim on top edge */
.glass::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  padding: 1px;
  background: linear-gradient(180deg,
    color-mix(in oklab, white 14%, transparent) 0%,
    transparent 30%,
    transparent 70%,
    color-mix(in oklab, white 4%, transparent) 100%);
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  pointer-events: none;
}

.glass-card {
  composes: glass;
}

.glass-hover {
  transition: transform var(--dur-med) var(--ease-out),
              box-shadow var(--dur-med) var(--ease-out),
              border-color var(--dur-med) var(--ease-out);
}
.glass-hover:hover {
  transform: translateY(-3px);
  border-color: var(--border-strong);
  box-shadow: var(--card-glass-shadow-hover);
}

/* ── Scroll / entrance reveal (site-wide) ──────
   A curated set of content blocks fades/slides in as it enters the viewport,
   on every page. Mechanics:
   • An inline <head> snippet adds html.reveal-armed BEFORE paint, so the blocks
     start hidden with no flash, and arms a failsafe timer.
   • The shared reveal.js cancels the failsafe and adds .is-in per block as it
     scrolls in (IntersectionObserver).
   • If reveal.js never runs, the failsafe adds html.reveal-done → everything
     shows. Reduced-motion never arms in the first place. Overlay glass
     (.cmdk) is excluded so palettes/modals are never hidden. */
html.reveal-armed
  :is(.section-head, .glass:not(.cmdk), .tier, .try-card, .drop-row,
      .log-row, .next-drop, .cta-card, .empty-state, [data-reveal]):not(.is-in) {
  opacity: 0;
  transform: translateY(22px);
  will-change: opacity, transform;
}
:is(.section-head, .glass:not(.cmdk), .tier, .try-card, .drop-row,
    .log-row, .next-drop, .cta-card, .empty-state, [data-reveal]).is-in {
  opacity: 1;
  transform: none;
  transition: opacity var(--dur-reveal) var(--ease-spring),
              transform var(--dur-reveal) var(--ease-spring);
}
html.reveal-done
  :is(.section-head, .glass:not(.cmdk), .tier, .try-card, .drop-row,
      .log-row, .next-drop, .cta-card, .empty-state, [data-reveal]) {
  opacity: 1 !important;
  transform: none !important;
}
@media (prefers-reduced-motion: reduce) {
  html :is(.section-head, .glass, .tier, .try-card, .drop-row,
           .log-row, .next-drop, .cta-card, .empty-state, [data-reveal]) {
    opacity: 1 !important;
    transform: none !important;
  }
}

/* gradient ink — for accent words in headings */
.t-gradient {
  background: var(--grad-orange-text);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

/* ── Navbar ───────────────────────────────── */
.navbar {
  position: fixed;
  inset-inline: 0;
  top: 0;
  z-index: 60;
  padding: 14px 24px;
  display: flex;
  justify-content: center;
  transition: transform var(--dur-med) var(--ease-out);
  will-change: transform;
}
.navbar.is-hidden { transform: translateY(-110%); }

.navbar-inner {
  width: min(1200px, 100%);
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 24px;
  padding: 10px 12px 10px 18px;
  border-radius: var(--r-pill);
  background: var(--glass-bg);
  border: 1px solid var(--glass-edge);
  backdrop-filter: blur(var(--blur-intensity)) saturate(160%);
  -webkit-backdrop-filter: blur(var(--blur-intensity)) saturate(160%);
  box-shadow: var(--glass-shadow);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--ink);
}
.brand-mark {
  display: inline-block;
  width: 40px; height: 40px;
  background: url("/assets/img/logo.png") center / contain no-repeat;
  filter: drop-shadow(0 0 12px rgba(249,115,22, calc(0.55 * var(--glow-intensity))));
  flex-shrink: 0;
}
/* Larger mark used by the dashboard sidebar brand. */
.brand-sidebar .brand-mark { width: 44px; height: 44px; }

.nav-links {
  display: flex;
  gap: 4px;
  align-items: center;
  justify-self: center;
}
.nav-links a {
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  font-size: 14px;
  color: var(--ink-muted);
  transition: color var(--dur-fast) var(--ease-out), background var(--dur-fast) var(--ease-out);
}
.nav-links a { position: relative; }
.nav-links a:hover { color: var(--ink); background: var(--orange-dim); }
.nav-links a[aria-current] { color: var(--orange-text); background: var(--orange-dim); }
/* Active page also gets an underline so it reads as "you are here". */
.nav-links a[aria-current]::after {
  content: "";
  position: absolute;
  left: 14px; right: 14px; bottom: 3px;
  height: 2px; border-radius: 2px;
  background: var(--grad-orange, var(--orange-400));
}

/* Language toggle is hidden site-wide (English-only for now). The EN/HE
   dictionaries and wiring remain in code, so it can be re-enabled later. */
.seg-lang { display: none !important; }

.nav-actions {
  display: flex;
  gap: 8px;
  justify-self: end;
  align-items: center;
}

/* ── Segmented toggle (theme · language) ─── */
.seg-toggle {
  display: inline-flex;
  align-items: center;
  gap: 0;
  padding: 3px;
  border-radius: var(--r-pill);
  background: color-mix(in oklab, var(--ink) 8%, transparent);
  border: 1px solid var(--hairline);
}
.seg-toggle button {
  appearance: none;
  background: none;
  color: var(--ink-faint);
  border: 0;
  min-width: 28px; height: 28px;
  padding: 0 8px;
  border-radius: var(--r-pill);
  display: grid; place-items: center;
  cursor: pointer;
  font: 500 12px/1 var(--font-sans);
  letter-spacing: 0.02em;
  transition: background var(--dur-fast) var(--ease-out), color var(--dur-fast) var(--ease-out), border-color var(--dur-fast) var(--ease-out), box-shadow var(--dur-fast) var(--ease-out), transform var(--dur-fast) var(--ease-out), opacity var(--dur-fast) var(--ease-out);
}
.seg-toggle button[aria-pressed="true"] {
  background: var(--bg);
  color: var(--ink);
  box-shadow: 0 1px 2px rgba(0,0,0,0.15);
}
.seg-lang button { font-weight: 600; }

/* RTL arrow mirroring */
:root[dir="rtl"] .arrow-end { transform: scaleX(-1); display: inline-block; }

/* ── Theme toggle (legacy class kept) ────── */
.theme-toggle {
  display: inline-flex;
  align-items: center;
  gap: 0;
  padding: 3px;
  border-radius: var(--r-pill);
  background: color-mix(in oklab, var(--ink) 8%, transparent);
  border: 1px solid var(--hairline);
}
.theme-toggle button {
  appearance: none;
  background: none;
  color: var(--ink-faint);
  border: 0;
  width: 28px; height: 28px;
  border-radius: var(--r-pill);
  display: grid; place-items: center;
  cursor: pointer;
  transition: background var(--dur-fast) var(--ease-out), color var(--dur-fast) var(--ease-out), border-color var(--dur-fast) var(--ease-out), box-shadow var(--dur-fast) var(--ease-out), transform var(--dur-fast) var(--ease-out), opacity var(--dur-fast) var(--ease-out);
}
.theme-toggle button[aria-pressed="true"] {
  background: var(--bg);
  color: var(--ink);
  box-shadow: 0 1px 2px rgba(0,0,0,0.15);
}

/* ── Container ────────────────────────────── */
.container {
  width: min(1200px, 100%);
  margin: 0 auto;
  padding-inline: 24px;
  position: relative;
  z-index: 2;
}
.container-narrow {
  width: min(960px, 100%);
  margin: 0 auto;
  padding-inline: 24px;
  position: relative;
  z-index: 2;
}

/* ── Section ──────────────────────────────── */
section { position: relative; z-index: 2; }
.section { padding-block: calc(var(--space-9) * var(--density)); }
.section-tight { padding-block: calc(var(--space-8) * var(--density)); }

.section-head {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: var(--space-7);
  max-width: 720px;
}

/* ── Hairline divider ─────────────────────── */
.divider {
  border: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--hairline), transparent);
}

/* ── Tag / Pill ───────────────────────────── */
.pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 12px;
  border-radius: var(--radius-pill);
  font: 600 11px/1 var(--font-mono);
  letter-spacing: 0.02em;
  color: var(--ink-muted);
  background: color-mix(in oklab, var(--ink) 5%, transparent);
  border: 1px solid var(--hairline);
}
.pill-orange {
  color: var(--orange-text);
  background: color-mix(in oklab, var(--orange-500) 10%, transparent);
  border-color: color-mix(in oklab, var(--orange-500) 28%, transparent);
}

/* ── Icons ─── line icons via SVG */
.icon {
  width: 16px; height: 16px;
  stroke: currentColor;
  fill: none;
  stroke-width: 1.6;
  stroke-linecap: round;
  stroke-linejoin: round;
  flex-shrink: 0;
}
.icon-lg { width: 22px; height: 22px; }
.icon-orange { color: var(--orange-icon); }

/* ── Utility ──────────────────────────────── */
.row { display: flex; align-items: center; gap: 8px; }
.row-wrap { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.stack { display: flex; flex-direction: column; gap: 8px; }
.grow { flex: 1; }
.spacer { flex: 1; }
.hide-mobile { }
@media (max-width: 720px) {
  .hide-mobile { display: none !important; }
  .navbar-inner { grid-template-columns: 1fr auto; }
  .nav-links { display: none; }
}

/* ── Focus ────────────────────────────────── */
:where(button, a, input, [tabindex]):focus-visible {
  outline: 2px solid var(--orange-400);
  outline-offset: 2px;
  border-radius: var(--r-sm);
}

/* ── Selection ────────────────────────────── */
::selection { background: rgba(249,115,22,0.35); color: var(--ink); }

/* ── Scrollbar (subtle) ───────────────────── */
* {
  scrollbar-width: thin;
  scrollbar-color: color-mix(in oklab, var(--ink) 15%, transparent) transparent;
}

/* ── Reduced motion ───────────────────────── */
@media (prefers-reduced-motion: reduce) {
  * { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
}

/* ── Mobile drawer (hamburger menu) ───────── */
.hamburger {
  display: none;
  background: transparent;
  border: 0;
  color: var(--ink);
  padding: 12px;
  border-radius: var(--r-md);
  cursor: pointer;
  align-items: center;
  justify-content: center;
}
.hamburger:hover { background: color-mix(in oklab, var(--ink) 6%, transparent); }
.hamburger:focus-visible { outline: 2px solid var(--orange-400); outline-offset: 2px; }

.mobile-drawer { position: fixed; inset: 0; z-index: 1000; }
.mobile-drawer[hidden] { display: none; }
.mobile-drawer-scrim {
  position: absolute; inset: 0;
  background: rgba(0,0,0,0.55);
  backdrop-filter: blur(6px);
  animation: drawer-scrim-in 0.15s ease-out;
}
.mobile-drawer-panel {
  position: absolute; top: 0; bottom: 0; inset-inline-end: 0;
  width: min(340px, 88vw);
  background: var(--bg);
  border-inline-start: 1px solid var(--hairline);
  padding: 20px 18px 24px;
  display: flex; flex-direction: column; gap: 16px;
  overflow-y: auto;
  animation: drawer-in 0.22s ease-out;
}
@keyframes drawer-scrim-in { from { opacity: 0; } to { opacity: 1; } }
@keyframes drawer-in { from { transform: translateX(100%); } to { transform: translateX(0); } }
html[dir="rtl"] .mobile-drawer-panel { animation-name: drawer-in-rtl; }
@keyframes drawer-in-rtl { from { transform: translateX(-100%); } to { transform: translateX(0); } }

.mobile-drawer-close {
  align-self: flex-end;
  background: transparent; border: 0;
  color: var(--ink-muted);
  padding: 6px; cursor: pointer; border-radius: var(--r-md);
}
.mobile-drawer-close:hover { color: var(--ink); background: color-mix(in oklab, var(--ink) 6%, transparent); }
.mobile-drawer-stack { display: flex; flex-direction: column; gap: 14px; }
.mobile-drawer-links { display: flex; flex-direction: column; gap: 2px; }
.mobile-drawer-links a {
  padding: 12px 14px;
  border-radius: var(--r-md);
  font-size: 16px;
  color: var(--ink);
  text-decoration: none;
  display: flex; align-items: center; gap: 12px;
}
.mobile-drawer-links a:hover { background: color-mix(in oklab, var(--ink) 6%, transparent); }
.mobile-drawer-links a[aria-current] {
  background: color-mix(in oklab, var(--orange-500) 12%, transparent);
  color: var(--orange-text);
}
.mobile-drawer-stack .seg-toggle { width: 100%; }
.mobile-drawer-stack .seg-toggle button { flex: 1; }
.mobile-drawer-stack .btn { width: 100%; justify-content: center; }
.mobile-drawer-stack .side-nav { display: flex; flex-direction: column; gap: 2px; }
.mobile-drawer-stack .side-nav a, .mobile-drawer-stack .side-link {
  padding: 12px 14px;
  border-radius: var(--r-md);
  font-size: 15px;
  color: var(--ink);
  text-decoration: none;
  display: flex; align-items: center; gap: 12px;
}
.mobile-drawer-stack .side-nav a:hover, .mobile-drawer-stack .side-link:hover {
  background: color-mix(in oklab, var(--ink) 6%, transparent);
}
.mobile-drawer-stack .side-section {
  font: 600 11px/1 var(--font-mono);
  text-transform: uppercase; letter-spacing: 0.08em;
  color: var(--ink-faint);
  padding: 12px 14px 6px;
}
.mobile-drawer-stack .side-foot { margin-top: auto; padding-top: 12px; border-top: 1px solid var(--hairline); display: flex; flex-direction: column; gap: 10px; }

/* On mobile, collapse navbar/topbar inline controls into the drawer */
@media (max-width: 720px) {
  .hamburger { display: inline-flex; }
  .navbar .nav-actions > *:not(.hamburger) { display: none; }
  /* Dashboard topbar: hide search expansion + segs on mobile (drawer holds them) */
  .topbar-actions > *:not(.hamburger) { display: none; }
  .topbar-search { display: none; }
  .topbar { padding-inline: 12px; justify-content: flex-end; }
}

/* ── Accessibility primitives ─────────────── */
.skip-link {
  position: fixed;
  top: 8px; inset-inline-start: 8px;
  padding: 10px 14px;
  background: var(--orange-primary);
  color: #fff;
  border-radius: var(--r-md);
  z-index: 9999;
  font: 600 14px/1 var(--font-sans);
  text-decoration: none;
  transform: translateY(-200%);
  transition: transform 0.15s var(--ease-out);
}
.skip-link:focus { transform: translateY(0); outline: none; }

/* A single consistent focus ring everywhere */
:focus-visible {
  outline: 2px solid var(--orange-400);
  outline-offset: 2px;
  border-radius: 6px;
}
.btn:focus-visible {
  outline-offset: 3px;
}
/* Suppress non-visible focus rings (mouse clicks) */
:focus:not(:focus-visible) { outline: none; }

/* ── Pro polish · modern micro-interactions ────
   Global, low-risk touches inspired by Linear/Vercel/Stripe. */

/* Thin scroll-progress bar at the very top (set by reveal.js, every page). */
.scroll-progress {
  position: fixed;
  inset-block-start: 0;
  inset-inline-start: 0;
  height: 2px;
  width: 100%;
  transform: scaleX(0);
  transform-origin: left;
  background: var(--grad-orange);
  box-shadow: 0 0 10px rgba(249,115,22,0.5);
  z-index: 300;
  pointer-events: none;
  will-change: transform;
}
:root[dir="rtl"] .scroll-progress { transform-origin: right; }
@media (prefers-reduced-motion: reduce) { .scroll-progress { display: none; } }

/* Skeleton shimmer for loading states. */
.skeleton {
  position: relative;
  overflow: hidden;
  background: color-mix(in oklab, var(--ink) 6%, transparent);
  border-radius: var(--radius-md);
}
.skeleton::after {
  content: "";
  position: absolute;
  inset: 0;
  transform: translateX(-100%);
  background: linear-gradient(90deg, transparent, color-mix(in oklab, var(--ink) 8%, transparent), transparent);
  animation: skeleton-sweep 1.4s ease-in-out infinite;
}
:root[dir="rtl"] .skeleton::after { animation-name: skeleton-sweep-rtl; }
@keyframes skeleton-sweep { 100% { transform: translateX(100%); } }
@keyframes skeleton-sweep-rtl { 100% { transform: translateX(-100%); } 0% { transform: translateX(100%); } }
.skeleton-card { min-height: 184px; border-radius: var(--radius-lg); border: 1px solid var(--border); }
@media (prefers-reduced-motion: reduce) { .skeleton::after { animation: none; } }

/* Navbar solidifies once the page is scrolled (set by reveal.js, every page). */
.navbar.is-scrolled .navbar-inner {
  background: color-mix(in oklab, var(--bg-elev) 84%, transparent);
  border-color: var(--border-strong);
  box-shadow: 0 12px 34px -16px rgba(0,0,0,0.6);
}

/* Animated underline for text links in the footer + content link runs. */
.footer-col a, .link-underline {
  position: relative;
}
.footer-col a::after, .link-underline::after {
  content: "";
  position: absolute;
  inset-inline-start: 0;
  bottom: -2px;
  height: 1px;
  width: 100%;
  background: currentColor;
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--dur-fast) var(--ease-out);
}
:root[dir="rtl"] .footer-col a::after,
:root[dir="rtl"] .link-underline::after { transform-origin: right; }
.footer-col a:hover::after, .link-underline:hover::after { transform: scaleX(1); }

/* Featured pricing tier sits slightly forward — the conversion anchor. */
.tier-featured {
  transform: translateY(-6px) scale(1.015);
  z-index: 1;
  transition: transform var(--dur-med) var(--ease-spring),
              box-shadow var(--dur-med) var(--ease-out);
}
.tier-featured:hover { transform: translateY(-9px) scale(1.02); }
@media (max-width: 1200px) { .tier-featured { transform: none; } .tier-featured:hover { transform: translateY(-3px); } }
@media (prefers-reduced-motion: reduce) { .tier-featured { transform: none !important; } }

/* ── Empty state ──────────────────────────── */
.empty-state {
  text-align: center;
  padding: 56px 24px;
  display: flex; flex-direction: column; align-items: center; gap: 14px;
  color: var(--ink-muted);
  border: 1px dashed var(--hairline);
  border-radius: var(--r-lg);
}
.empty-state .empty-icon {
  width: 56px; height: 56px;
  display: grid; place-items: center;
  border-radius: 14px;
  background: color-mix(in oklab, var(--orange-500) 10%, transparent);
  border: 1px solid color-mix(in oklab, var(--orange-500) 24%, transparent);
  color: var(--orange-text);
}
.empty-state .empty-icon svg { width: 26px; height: 26px; }
.empty-state h3 { margin: 0; font-size: 17px; font-weight: 600; color: var(--ink); max-width: 36ch; }
.empty-state p  { margin: 0; max-width: 44ch; font-size: 14px; }
.empty-state .btn { margin-top: 4px; }

/* Screen-reader-only: visually hidden but still announced (e.g. a table
   header for an actions-only column with no visible label). */
.sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0;
}