/* ═══════════════════════════════════════════════════════════
   KAIROS — Precision Growth Systems
   styles.css — v4: full-bleed hero, header AI halo, modal
   ═══════════════════════════════════════════════════════════ */

/* ── Custom Properties ── */
:root {
  --c-base:        #F5F2EB;
  --c-paper:       #ECE7DE;
  --c-mineral:     #D8D2C8;
  --c-violet:      #7A2FC7;
  --c-violet-h:    #9045DC;
  --c-lavender:    #B8A8F0;
  --c-text:        #1D1A24;
  --c-text-2:      #4A4560;
  --c-text-3:      #7A7498;
  --c-white:       #FFFFFF;
  --c-deep:        #080510;

  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, "Helvetica Neue", Arial, sans-serif;

  --r-sm:   4px;
  --r-md:   8px;
  --r-lg:   14px;
  --r-xl:   22px;
  --r-full: 9999px;

  --sp-sm:  1rem;
  --sp-md:  2rem;
  --sp-lg:  4rem;
  --sp-xl:  7rem;

  --header-h: 68px;
  --max-w:    1040px;

  --ease-out: cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --t-fast:   140ms ease;
  --t-base:   230ms ease;
  --t-slow:   480ms var(--ease-out);

  --shadow-btn:   0 6px 24px rgba(122, 47, 199, 0.32);
  --shadow-modal: 0 32px 100px rgba(8, 5, 18, 0.40), 0 0 0 1px rgba(216, 210, 200, 0.30);
}

/* ── Reset ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  background: var(--c-base);
  color: var(--c-text);
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.6;
  min-height: 100vh;
  overflow-x: hidden;
}
img    { max-width: 100%; height: auto; display: block; }
a      { color: inherit; text-decoration: none; }
button { cursor: pointer; border: none; background: none; font: inherit; }
ul,ol  { list-style: none; }

/* ── Screen-reader only ── */
.sr-only {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; overflow: hidden;
  clip: rect(0,0,0,0);
  white-space: nowrap; border: 0;
}

/* ══════════════════════════════════════
   FIXED BACKGROUND LAYERS
══════════════════════════════════════ */
#bg-canvas {
  position: fixed;
  inset: 0;
  width: 100%; height: 100%;
  z-index: 0;
  pointer-events: none;
}

.grain-overlay {
  position: fixed;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='320' height='320'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.88' numOctaves='4' stitchTiles='stitch'/%3E%3CfeColorMatrix type='saturate' values='0'/%3E%3C/filter%3E%3Crect width='320' height='320' filter='url(%23n)' opacity='0.07'/%3E%3C/svg%3E");
  background-size: 320px 320px;
}

.vignette {
  position: fixed;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  background: radial-gradient(ellipse at 50% 38%, transparent 48%, rgba(29,26,36,.10) 100%);
}

/* ══════════════════════════════════════
   HEADER
══════════════════════════════════════ */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 300;
  height: var(--header-h);
  display: flex;
  align-items: center;
  padding: 0 var(--sp-md);
  background: rgba(245,242,235,.82);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(216,210,200,.40);
}

.header-inner {
  width: 100%;
  max-width: var(--max-w);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo-link { display: inline-flex; align-items: center; }

/* ─── Header logo with AI halo ─── */
.header-logo-wrap {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  isolation: isolate;
}

/*
  AI halo behind the transparent logo PNG.
  Glows through the letter-gaps in the "AI" region of the wordmark.
  Horizontal guide for "KAIROS": K≈0–17% | A≈17–34% | I≈34–48% | R–O–S after.
  Adjust left/width if the PNG has different internal proportions or padding.
*/
.header-ai-halo {
  position: absolute;
  z-index: 0;
  left: 14%;
  width: 36%;
  top: -55%;
  height: 210%;
  background: radial-gradient(
    ellipse 58% 52% at 44% 50%,
    rgba(122, 47, 199, 0.62) 0%,
    rgba(184, 168, 240, 0.20) 40%,
    transparent 66%
  );
  filter: blur(14px);
  pointer-events: none;
  animation: aiHalo 4.0s cubic-bezier(0.4, 0, 0.6, 1) infinite;
  animation-delay: 2.0s;
}

@keyframes aiHalo {
  0%, 100% { opacity: 0.08; }
  45%       { opacity: 1.00; }
  55%       { opacity: 0.96; }
}

.logo-img {
  position: relative;
  z-index: 1;
  height: 36px;
  width: auto;
  object-fit: contain;
}
.logo-img--sm { height: 22px; }

/* Subtle life on the header logo — very slow opacity + lavender drop-shadow pulse */
.header-logo-wrap .logo-img {
  animation: logoPulse 5s ease-in-out 1s infinite;
}

@keyframes logoPulse {
  0%, 100% { filter: brightness(1)   drop-shadow(0 0  0px transparent); opacity: 1.00; }
  50%       { filter: brightness(1.04) drop-shadow(0 0 10px rgba(184,168,240,0.30)); opacity: 0.96; }
}

.logo-text {
  font-size: 1rem; font-weight: 800;
  letter-spacing: 0.24em; text-transform: uppercase;
  color: var(--c-text); line-height: 1;
  position: relative; z-index: 1;
}
.logo-text--sm { font-size: 0.82rem; }

/* Language switcher — pill group */
.lang-switcher {
  display: flex;
  align-items: center;
  gap: 1px;
  padding: 3px;
  background: rgba(216,210,200,.22);
  border: 1px solid rgba(216,210,200,.50);
  border-radius: var(--r-full);
  /* Scrollable on narrow viewports without breaking the pill shape */
  overflow-x: auto;
  overflow-y: hidden;
  scrollbar-width: none;
  -ms-overflow-style: none;
  flex-shrink: 1;
  max-width: min-content;
}
.lang-switcher::-webkit-scrollbar { display: none; }

.lang-btn {
  padding: 4px 9px;
  font-size: 0.65rem; font-weight: 700;
  letter-spacing: 0.07em; text-transform: uppercase;
  color: var(--c-text-3); border-radius: var(--r-full);
  transition: color var(--t-fast), background var(--t-fast);
  line-height: 1.2;
  flex-shrink: 0;
  white-space: nowrap;
}
.lang-btn:hover { color: var(--c-text); background: rgba(245,242,235,.8); }
.lang-btn.active {
  color: var(--c-violet);
  background: rgba(245,242,235,.95);
  box-shadow: 0 1px 3px rgba(29,26,36,.08);
}
.lang-btn:focus-visible { outline: 2px solid var(--c-violet); outline-offset: 2px; }

/* ══════════════════════════════════════
   SHARED
══════════════════════════════════════ */
main { position: relative; z-index: 2; }

.container {
  width: 100%; max-width: var(--max-w);
  margin: 0 auto; padding: 0 var(--sp-md);
}

.label-tag {
  display: inline-block;
  font-size: 0.68rem; font-weight: 700;
  letter-spacing: 0.13em; text-transform: uppercase;
  color: var(--c-violet);
  background: rgba(122,47,199,.07);
  border: 1px solid rgba(122,47,199,.16);
  padding: 4px 12px; border-radius: var(--r-full);
  margin-bottom: var(--sp-sm);
}

/* Primary button */
.btn-primary {
  display: inline-flex; align-items: center; justify-content: center;
  padding: 15px 38px;
  background: var(--c-violet); color: var(--c-white);
  font-size: 0.875rem; font-weight: 700; letter-spacing: 0.04em;
  border-radius: var(--r-md); border: 2px solid var(--c-violet);
  transition: background var(--t-base), border-color var(--t-base),
              transform var(--t-fast), box-shadow var(--t-base);
  cursor: pointer; white-space: nowrap;
}
.btn-primary:hover {
  background: var(--c-violet-h); border-color: var(--c-violet-h);
  transform: translateY(-2px); box-shadow: var(--shadow-btn);
}
.btn-primary:active { transform: translateY(0); box-shadow: none; }
.btn-primary:focus-visible { outline: 2px solid var(--c-violet); outline-offset: 3px; }
.btn-full { width: 100%; }

/* Hero CTA — gradient, animated sheen, idle glow */
.hero-content .btn-primary {
  min-width: 260px;
  min-height: 58px;
  font-size: 0.98rem;
  letter-spacing: 0.055em;
  border-radius: 10px;
  background: linear-gradient(135deg,
    #5A1FA0  0%,
    #7A2FC7 45%,
    #9B5FE0 80%,
    #B8A8F0 100%
  );
  background-size: 200% 200%;
  border-color: #7A2FC7;
  position: relative;
  overflow: hidden;
  animation: ctaIdleGlow      4.5s ease-in-out 3s  infinite,
             ctaGradientShift 6s   ease-in-out  1s  infinite;
}

/* Diagonal light sheen — sweeps every 5.5 s */
.hero-content .btn-primary::before {
  content: '';
  position: absolute;
  top: 0; left: 0;
  width: 50%; height: 100%;
  background: linear-gradient(
    105deg,
    transparent 0%,
    rgba(255, 255, 255, 0.16) 50%,
    transparent 100%
  );
  transform: translateX(-200%);
  pointer-events: none;
  animation: ctaSheen 5.5s ease-in-out 4s infinite;
}

.hero-content .btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 36px rgba(122, 47, 199, 0.60), 0 0 0 4px rgba(122, 47, 199, 0.15);
  filter: brightness(1.08);
}

@keyframes ctaIdleGlow {
  0%, 100% { box-shadow: 0 4px 18px rgba(122, 47, 199, 0.22); }
  50%       { box-shadow: 0 6px 32px rgba(122, 47, 199, 0.48), 0 0 0 3px rgba(122, 47, 199, 0.09); }
}

@keyframes ctaGradientShift {
  0%, 100% { background-position:   0% 50%; }
  50%       { background-position: 100% 50%; }
}

@keyframes ctaSheen {
  0%   { transform: translateX(-200%); opacity: 0; }
  5%   { opacity: 1; }
  40%  { transform: translateX(400%); opacity: 0; }
  100% { transform: translateX(400%); opacity: 0; }
}

/* ══════════════════════════════════════
   HERO — full-screen cinematic
══════════════════════════════════════ */
.section-hero {
  position: relative;
  width: 100%;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  /* sits within main which has z-index:2 */
}

/* Background video: fills the hero, content sits above it */
.hero-video {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: 0;
  pointer-events: none;
  opacity: 0;
  transition: opacity 1.6s ease;
}

.hero-video.loaded { opacity: 1; }

/* Warm translucent veil — softens the dark video, keeps page palette */
.hero-overlay-warm {
  position: absolute;
  inset: 0;
  z-index: 1;
  background: rgba(245, 242, 235, 0.56);
  pointer-events: none;
}

/* Gradient — tightens legibility above/below, stays open in the centre */
.hero-overlay-gradient {
  position: absolute;
  inset: 0;
  z-index: 2;
  background: linear-gradient(
    to bottom,
    rgba(245,242,235,0.28) 0%,
    rgba(236,231,222,0.06) 28%,
    rgba(236,231,222,0.06) 66%,
    rgba(245,242,235,0.34) 100%
  );
  pointer-events: none;
}

/* Signal glow — slow drifting violet aura */
.hero-overlay-signal {
  position: absolute;
  inset: 0;
  z-index: 3;
  pointer-events: none;
  overflow: hidden;
}

.hero-overlay-signal::before {
  content: '';
  position: absolute;
  inset: -30%;
  background: radial-gradient(
    ellipse 52% 42% at 38% 48%,
    rgba(122, 47, 199, 0.11) 0%,
    rgba(184, 168, 240, 0.04) 48%,
    transparent 70%
  );
  animation: signalDrift 20s ease-in-out infinite alternate;
}

@keyframes signalDrift {
  0%   { transform: translate(0%,    0%);   opacity: 0.65; }
  30%  { transform: translate(12%,  -8%);   opacity: 1.00; }
  65%  { transform: translate(-8%,  12%);   opacity: 0.55; }
  100% { transform: translate(18%,   6%);   opacity: 0.85; }
}

/* Content layer: sits on top of all overlays */
.hero-content {
  position: relative;
  z-index: 4;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 3rem;
  padding: calc(var(--header-h) + 2.5rem) var(--sp-md) 6rem;
  width: 100%;
  max-width: var(--max-w);
  /* Enter animation + very subtle perpetual float */
  animation: heroContentEnter 1.1s var(--ease-out) 0.25s both,
             heroFloat 9s ease-in-out 1.5s infinite;
}

/* Soft radial readability veil — no box, no card; just warmth behind the text */
.hero-content::before {
  content: '';
  position: absolute;
  inset: -40% -28%;
  background: radial-gradient(
    ellipse 72% 58% at 50% 50%,
    rgba(245, 242, 235, 0.22) 0%,
    transparent 68%
  );
  pointer-events: none;
  z-index: -1;
}

@keyframes heroContentEnter {
  from { opacity: 0; transform: translateY(20px); }
  to   { opacity: 1; transform: translateY(0);    }
}

@keyframes heroFloat {
  0%, 100% { transform: translateY(0);    }
  50%       { transform: translateY(-5px); }
}

.hero-line-1 {
  font-size: clamp(1.9rem, 3vw, 3.2rem);
  font-weight: 700;
  color: var(--c-text);
  letter-spacing: -0.03em;
  line-height: 1.05;
  text-shadow: 0 2px 18px rgba(245, 242, 235, 0.80);
}

.hero-line-2 {
  font-size: clamp(1rem, 1.2vw, 1.2rem);
  color: var(--c-text-2);
  opacity: 0.88;
  max-width: 560px;
  line-height: 1.45;
  text-shadow: 0 1px 10px rgba(245, 242, 235, 0.65);
  margin-top: -1.2rem;
}

/* ─── Countdown ─── */
.countdown {
  display: flex;
  align-items: center;
  gap: 1.6rem;
}

.cd-unit {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.3rem;
  min-width: 3ch;
}

.cd-num {
  font-size: clamp(2.4rem, 4vw, 4.8rem);
  font-weight: 800;
  letter-spacing: -0.04em;
  line-height: 1;
  color: var(--c-text);
  font-variant-numeric: tabular-nums;
  transition: opacity 0.15s ease, text-shadow 0.4s ease;
}

/* Cursor proximity glow — toggled by JS */
.countdown--near .cd-num {
  text-shadow:
    0 0 20px rgba(184, 168, 240, 0.50),
    0 0 48px rgba(122,  47, 199, 0.22);
}

.cd-lbl {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--c-text-3);
  opacity: 0.72;
}

.cd-sep {
  font-size: 1.8rem;
  font-weight: 300;
  color: var(--c-mineral);
  align-self: flex-start;
  margin-top: 0.1rem;
  line-height: 1;
  opacity: 0.60;
}

/* Elapsed state */
.countdown[data-elapsed] .cd-num { display: none; }
.countdown[data-elapsed] .cd-sep { display: none; }
.countdown[data-elapsed]::after {
  content: attr(data-elapsed-msg);
  font-size: 0.85rem;
  color: var(--c-text-3);
  letter-spacing: 0.04em;
}

/* Scroll hint */
.scroll-hint {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  z-index: 5;
}

.scroll-line {
  display: block;
  width: 1px; height: 44px;
  background: linear-gradient(to bottom, var(--c-mineral), transparent);
  animation: scrollDrop 2.4s ease-in-out infinite;
}

@keyframes scrollDrop {
  0%, 100% { opacity: 0.28; transform: scaleY(1) translateY(0); }
  50%       { opacity: 0.65; transform: scaleY(1.15) translateY(4px); }
}

/* ══════════════════════════════════════
   CHIPS
══════════════════════════════════════ */
.section-chips {
  padding: var(--sp-lg) 0;
  background: rgba(236,231,222,.46);
  border-top:    1px solid rgba(216,210,200,.55);
  border-bottom: 1px solid rgba(216,210,200,.55);
  position: relative; z-index: 2;
}

.chips-strip {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 0;
}

.chip {
  display: flex; align-items: center; gap: 10px;
  padding: 0.6rem 2.8rem;
  font-size: 0.72rem; font-weight: 700;
  letter-spacing: 0.10em; text-transform: uppercase;
  color: var(--c-text-2); white-space: nowrap;
}

.chip + .chip { border-left: 1px solid rgba(216,210,200,.85); }

.chip-dot {
  display: block;
  width: 5px; height: 5px;
  background: var(--c-violet); border-radius: 50%;
  flex-shrink: 0; opacity: 0.72;
}

/* ══════════════════════════════════════
   FOOTER
══════════════════════════════════════ */
.site-footer {
  background: rgba(236,231,222,.65);
  border-top: 1px solid rgba(216,210,200,.60);
  padding: var(--sp-lg) 0;
  position: relative; z-index: 2;
}

.footer-inner {
  display: flex; align-items: flex-start;
  justify-content: space-between; gap: var(--sp-md);
}

.footer-brand { display: flex; flex-direction: column; gap: 0.6rem; }

.footer-tagline {
  font-size: 0.86rem; color: var(--c-text-3);
  max-width: 320px; line-height: 1.6;
}

.footer-meta {
  display: flex; flex-direction: column;
  align-items: flex-end; gap: 0.5rem; text-align: right;
}

.footer-domain {
  font-size: 0.875rem; font-weight: 700;
  letter-spacing: 0.04em; color: var(--c-text-2);
  transition: color var(--t-fast);
}
.footer-domain:hover { color: var(--c-violet); }
.footer-copy { font-size: 0.77rem; color: var(--c-text-3); }

/* ══════════════════════════════════════
   MODAL
══════════════════════════════════════ */
.modal-overlay {
  position: fixed;
  inset: 0;
  z-index: 500;
  background: rgba(18, 14, 30, 0.68);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--sp-md);
  /* Closed state */
  visibility: hidden;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.30s ease, visibility 0s linear 0.30s;
}

.modal-overlay.is-open {
  visibility: visible;
  opacity: 1;
  pointer-events: auto;
  transition: opacity 0.30s ease, visibility 0s linear 0s;
}

.modal-panel {
  position: relative;
  background: var(--c-base);
  border: 1px solid var(--c-mineral);
  border-radius: var(--r-xl);
  padding: 2.5rem;
  width: 100%;
  max-width: 520px;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: var(--shadow-modal);
  transform: translateY(22px) scale(0.97);
  transition: transform 0.35s var(--ease-out);
}

.modal-overlay.is-open .modal-panel {
  transform: translateY(0) scale(1);
}

.modal-close {
  position: absolute;
  top: 1.25rem; right: 1.25rem;
  width: 34px; height: 34px;
  display: flex; align-items: center; justify-content: center;
  color: var(--c-text-3);
  border-radius: var(--r-full);
  transition: color var(--t-fast), background var(--t-fast);
}
.modal-close:hover { color: var(--c-text); background: rgba(216,210,200,.45); }
.modal-close:focus-visible { outline: 2px solid var(--c-violet); outline-offset: 2px; }

.modal-header { margin-bottom: 1.75rem; }
.modal-title  { font-size: 1.4rem; font-weight: 700; letter-spacing: -0.02em; color: var(--c-text); }

/* Modal form layout */
.mf-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin-bottom: 1rem;
}

.mf-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: 1rem;
}

.mf-group:last-of-type { margin-bottom: 1.5rem; }

.mf-group label {
  font-size: 0.73rem; font-weight: 700;
  letter-spacing: 0.06em; text-transform: uppercase;
  color: var(--c-text-2);
  display: flex; align-items: center; gap: 6px;
}

.mf-optional {
  font-size: 0.65rem; font-weight: 500;
  letter-spacing: 0.03em; text-transform: none;
  color: var(--c-text-3);
}

.mf-hint {
  font-size: 0.68rem;
  color: var(--c-text-3);
  line-height: 1.4;
  margin-top: -2px;
}

.mf-privacy {
  font-size: 0.67rem;
  color: var(--c-text-3);
  text-align: center;
  line-height: 1.5;
  padding: 0 0.25rem;
  margin-bottom: 1rem;
  margin-top: -0.25rem;
}

.mf-group input,
.mf-group textarea {
  padding: 11px 14px;
  background: rgba(245,242,235,.9);
  border: 1px solid var(--c-mineral);
  border-radius: var(--r-md);
  font-size: 0.9375rem; font-family: var(--font-sans); color: var(--c-text);
  transition: border-color var(--t-fast), box-shadow var(--t-fast);
  appearance: none; -webkit-appearance: none;
}

.mf-group input:focus,
.mf-group textarea:focus {
  outline: none;
  border-color: var(--c-violet);
  box-shadow: 0 0 0 3px rgba(122,47,199,.10);
  background: #fff;
}

.mf-group input.field-error { border-color: rgba(180,55,55,.55); }

.mf-group textarea { resize: vertical; min-height: 88px; line-height: 1.55; }

.mf-error {
  font-size: 0.78rem;
  color: rgba(180, 55, 55, 0.90);
  text-align: center;
  line-height: 1.5;
  padding: 0.25rem 0.25rem 0.5rem;
}

/* Modal success state */
.modal-success {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 1rem;
  padding: 1.5rem 0 0.5rem;
  color: var(--c-violet);
  font-size: 0.95rem; line-height: 1.6;
}

.modal-success-icon { opacity: 0.9; }

/* ══════════════════════════════════════
   SCROLL REVEAL
══════════════════════════════════════ */
.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.60s var(--ease-out), transform 0.60s var(--ease-out);
}
.reveal.visible { opacity: 1; transform: translateY(0); }
.reveal-delay-1  { transition-delay:  90ms; }
.reveal-delay-2  { transition-delay: 190ms; }

/* ══════════════════════════════════════
   REDUCED MOTION
══════════════════════════════════════ */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .hero-content               { animation: none; }
  .hero-content::before       { display: none; }
  .header-ai-halo             { animation: none; opacity: 0.38; }
  .header-logo-wrap .logo-img { animation: none; }
  .hero-overlay-signal::before { animation: none; }
  .scroll-line                { animation: none; opacity: 0.30; }
  .hero-content .btn-primary         { animation: none; }
  .hero-content .btn-primary::before { display: none; }
  .reveal                     { opacity: 1; transform: none; transition: none; }
  .btn-primary:hover          { transform: none; box-shadow: none; }
  .modal-panel                { transform: none; transition: none; }
  .grain-overlay              { opacity: 0.35; }
}

/* ══════════════════════════════════════
   MOBILE HERO — 9:16 vertical video
══════════════════════════════════════ */
@media (max-width: 768px) {
  /* svh accounts for collapsible browser chrome; vh fallback for older browsers */
  .section-hero { min-height: 100vh; min-height: 100svh; }
  .hero-video   { object-fit: cover; object-position: center center; }
}

/* ══════════════════════════════════════
   RTL — Arabic
══════════════════════════════════════ */

/* Keep countdown unit order and number direction left-to-right in RTL */
[dir="rtl"] .countdown { direction: ltr; }

/* Flip chip separator from left-border to right-border */
[dir="rtl"] .chip + .chip {
  border-left: none;
  border-right: 1px solid rgba(216,210,200,.85);
}

/* ══════════════════════════════════════
   RESPONSIVE — ≤ 800px
══════════════════════════════════════ */
@media (max-width: 800px) {
  .mf-row { grid-template-columns: 1fr; }
}

/* ══════════════════════════════════════
   RESPONSIVE — ≤ 680px
══════════════════════════════════════ */
@media (max-width: 680px) {
  :root { --sp-lg: 3rem; --sp-xl: 4.5rem; }

  .site-header { padding: 0 var(--sp-sm); }
  .lang-btn    { padding: 4px 7px; font-size: 0.62rem; }

  .hero-content { gap: 2.2rem; }
  .hero-content .btn-primary { min-width: 0; width: 100%; max-width: 320px; }
  .countdown    { gap: 1.1rem; }
  .cd-num       { font-size: clamp(2rem, 8vw, 3rem); }

  .chips-strip { flex-direction: column; }
  .chip        { justify-content: center; padding: 0.9rem 2rem; }
  .chip + .chip { border-left: none; border-top: 1px solid rgba(216,210,200,.7); }

  .footer-inner  { flex-direction: column; }
  .footer-meta   { align-items: flex-start; text-align: left; }

  .modal-panel { padding: 2rem 1.5rem; }
}

/* ══════════════════════════════════════
   RESPONSIVE — ≤ 420px
══════════════════════════════════════ */
@media (max-width: 420px) {
  :root { --sp-md: 1.25rem; }
  .hero-content { gap: 1.8rem; }
  .hero-line-1  { font-size: clamp(1.6rem, 9vw, 2.4rem); }
  .btn-primary  { width: 100%; max-width: 320px; }
}