/* ==========================================================================
   dysteme. — Brightening Cleanser · Landing
   Editorial Luxury × Clinical Authority × Arabic-first
   ========================================================================== */

:root {
  --color-primary: #1C1917;
  --color-on-primary: #FFFBF5;
  --color-secondary: #44403C;
  --color-accent: #B45309;
  --color-accent-hover: #92400E;
  --color-background: #FAFAF9;
  --color-surface: #FFFFFF;
  --color-foreground: #0C0A09;
  --color-muted: #F5F5F4;
  --color-muted-fg: #78716C;
  --color-border: #E7E5E4;
  --color-success: #166534;
  --color-destructive: #DC2626;
  --gradient-gold: linear-gradient(135deg, #D4A574 0%, #B45309 50%, #78350F 100%);

  --shadow-sm: 0 1px 2px rgba(28, 25, 23, 0.08);
  --shadow-md: 0 8px 24px rgba(28, 25, 23, 0.10);
  --shadow-lg: 0 24px 48px rgba(28, 25, 23, 0.12);

  --font-display: 'Fraunces', Georgia, serif;
  --font-body: 'Manrope', -apple-system, sans-serif;
  --font-ar-display: 'Noto Kufi Arabic', system-ui, sans-serif;
  --font-ar-body: 'Noto Sans Arabic', system-ui, sans-serif;

  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-pill: 999px;

  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

*, *::before, *::after { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--color-foreground);
  background: var(--color-background);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

[dir="rtl"] body { font-family: var(--font-ar-body); }

img { max-width: 100%; height: auto; display: block; }

button { font-family: inherit; border: none; cursor: pointer; background: none; }

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

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding-inline: 1.25rem;
}

.h1 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(2.5rem, 5vw + 1rem, 4.5rem);
  line-height: 1.05;
  letter-spacing: -0.03em;
  margin: 0 0 1.25rem;
  color: var(--color-primary);
}

[dir="rtl"] .h1 { font-family: var(--font-ar-display); letter-spacing: 0; }

.h1 em {
  font-style: italic;
  font-weight: 400;
  background: var(--gradient-gold);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  display: inline-block;
}

.h2 {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(1.875rem, 3vw + 0.5rem, 2.75rem);
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin: 0 0 1rem;
  color: var(--color-primary);
}

[dir="rtl"] .h2 { font-family: var(--font-ar-display); letter-spacing: 0; }

h3 { font-family: var(--font-display); font-weight: 600; font-size: 1.5rem; line-height: 1.25; margin: 0 0 0.75rem; }
[dir="rtl"] h3 { font-family: var(--font-ar-display); }

.eyebrow {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 1rem;
}

[dir="rtl"] .eyebrow { letter-spacing: 0; }

.lede {
  font-size: 1.125rem;
  line-height: 1.55;
  color: var(--color-secondary);
  max-width: 55ch;
  margin: 0 0 2rem;
}

.section-head { max-width: 720px; margin: 0 auto 3rem; text-align: center; }
.section-head p { color: var(--color-muted-fg); font-size: 1.0625rem; }

/* Buttons ------------------------------------------------------------------ */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.875rem 1.5rem;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 0.9375rem;
  letter-spacing: 0.02em;
  cursor: pointer;
  transition: all 200ms var(--ease);
  white-space: nowrap;
  text-align: center;
}

.btn-primary {
  background: var(--color-primary);
  color: var(--color-on-primary);
  box-shadow: var(--shadow-sm);
}
.btn-primary:hover { background: var(--color-secondary); transform: translateY(-1px); box-shadow: var(--shadow-md); }

.btn-outline {
  background: transparent;
  color: var(--color-primary);
  border: 1.5px solid var(--color-border);
}
.btn-outline:hover { border-color: var(--color-primary); background: var(--color-muted); }

.btn-ghost {
  background: transparent;
  color: var(--color-primary);
  border: 1.5px solid var(--color-primary);
}
.btn-ghost:hover { background: var(--color-primary); color: var(--color-on-primary); }

.btn-lg { padding: 1.125rem 2rem; font-size: 1.0625rem; }
.btn-sm { padding: 0.5rem 1rem; font-size: 0.8125rem; }
.btn-full { width: 100%; }

.btn:focus-visible { outline: 2px solid var(--color-accent); outline-offset: 3px; }

/* Announce bar ------------------------------------------------------------- */

.announce {
  background: var(--color-primary);
  color: var(--color-on-primary);
  font-size: 0.8125rem;
  letter-spacing: 0.04em;
  text-align: center;
  padding: 0.6rem 1rem;
}

/* Header ------------------------------------------------------------------- */

.header { position: sticky; top: 0; z-index: 50; background: color-mix(in oklab, var(--color-background) 90%, transparent); backdrop-filter: blur(16px); border-bottom: 1px solid var(--color-border); }

.header-inner { display: flex; align-items: center; justify-content: space-between; padding-block: 0.875rem; }

.brand { display: inline-flex; align-items: baseline; gap: 0.625rem; }

.brand-mark {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.5rem;
  letter-spacing: -0.02em;
  color: var(--color-primary);
}

.brand-mark .dot { color: var(--color-accent); }

.brand-ar {
  font-family: var(--font-ar-display);
  font-weight: 600;
  font-size: 1.125rem;
  color: var(--color-secondary);
}

.nav { display: flex; align-items: center; gap: 0.75rem; }

.lang-toggle {
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--color-muted-fg);
  padding: 0.5rem 0.75rem;
  border-radius: var(--radius-sm);
  transition: color 200ms var(--ease);
}
.lang-toggle:hover { color: var(--color-primary); }

/* Hero --------------------------------------------------------------------- */

.hero { padding: clamp(3rem, 8vw, 6rem) 0; overflow: hidden; }

.hero-inner {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: clamp(2rem, 6vw, 5rem);
  align-items: center;
}

.hero-copy > * { opacity: 0; animation: fadeUp 700ms var(--ease) forwards; }
.hero-copy > *:nth-child(1) { animation-delay: 80ms; }
.hero-copy > *:nth-child(2) { animation-delay: 180ms; }
.hero-copy > *:nth-child(3) { animation-delay: 300ms; }
.hero-copy > *:nth-child(4) { animation-delay: 420ms; }

@keyframes fadeUp { from { opacity: 0; transform: translateY(20px); } to { opacity: 1; transform: none; } }

.hero-cta { display: flex; flex-direction: column; gap: 1rem; align-items: flex-start; }
[dir="rtl"] .hero-cta { align-items: flex-end; }

.trust-mini { display: inline-flex; align-items: center; gap: 0.5rem; color: var(--color-muted-fg); font-size: 0.875rem; }
.stars { color: var(--color-accent); letter-spacing: 0.1em; font-size: 1rem; }

.hero-figure { position: relative; }
.hero-figure img { border-radius: var(--radius-lg); box-shadow: var(--shadow-lg); aspect-ratio: 4/5; object-fit: cover; }

/* Quiz --------------------------------------------------------------------- */

.quiz { padding: 4rem 0; background: var(--color-surface); border-block: 1px solid var(--color-border); }

.quiz-card {
  max-width: 720px;
  margin: 0 auto;
  padding: 2rem;
  background: var(--color-background);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-sm);
}

.quiz-progress { height: 3px; background: var(--color-muted); border-radius: var(--radius-pill); margin-bottom: 2rem; overflow: hidden; }
.quiz-progress-bar { height: 100%; background: var(--color-accent); border-radius: var(--radius-pill); transition: width 400ms var(--ease); }

.quiz-step h3 { text-align: center; margin-bottom: 1.75rem; font-size: 1.375rem; }

.quiz-options { display: grid; gap: 0.75rem; }

.quiz-option {
  text-align: start;
  padding: 1.125rem 1.25rem;
  background: var(--color-surface);
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-md);
  font-size: 1rem;
  font-weight: 500;
  color: var(--color-primary);
  transition: all 200ms var(--ease);
  cursor: pointer;
}

.quiz-option:hover { border-color: var(--color-accent); background: color-mix(in oklab, var(--color-accent) 5%, var(--color-surface)); transform: translateX(4px); }
[dir="rtl"] .quiz-option:hover { transform: translateX(-4px); }

.quiz-result { text-align: center; }
.quiz-result-badge {
  display: inline-flex; align-items: center; gap: 0.5rem;
  padding: 0.375rem 0.875rem;
  background: color-mix(in oklab, var(--color-success) 12%, var(--color-surface));
  color: var(--color-success);
  border-radius: var(--radius-pill);
  font-size: 0.8125rem;
  font-weight: 600;
  margin-bottom: 1rem;
}
.quiz-result-badge svg { width: 16px; height: 16px; }
.quiz-result p { color: var(--color-muted-fg); max-width: 52ch; margin: 0 auto 1.75rem; }

/* Problem ------------------------------------------------------------------ */

.problem { padding: clamp(4rem, 8vw, 6rem) 0; }

.pain-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.5rem;
}

.pain { padding: 2rem; background: var(--color-surface); border: 1px solid var(--color-border); border-radius: var(--radius-lg); }
.pain-num { font-family: var(--font-display); font-style: italic; font-size: 2.5rem; color: var(--color-accent); margin-bottom: 1rem; }
.pain p { color: var(--color-muted-fg); margin: 0; }

/* Solution ----------------------------------------------------------------- */

.solution { padding: clamp(4rem, 8vw, 6rem) 0; background: var(--color-surface); border-block: 1px solid var(--color-border); }

.solution-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(2rem, 5vw, 4rem);
  align-items: center;
}

.sol-list { list-style: none; padding: 0; margin: 0; display: grid; gap: 1.25rem; }
.sol-list li { padding-inline-start: 1.25rem; position: relative; color: var(--color-secondary); }
.sol-list li::before { content: ''; position: absolute; inset-inline-start: 0; top: 0.625rem; width: 8px; height: 8px; background: var(--color-accent); border-radius: 50%; }
.sol-list strong { color: var(--color-primary); font-weight: 600; }

.solution-figure img { border-radius: var(--radius-lg); box-shadow: var(--shadow-md); aspect-ratio: 1/1; object-fit: cover; }

/* Before / After ----------------------------------------------------------- */

.ba { padding: clamp(4rem, 8vw, 6rem) 0; }
.ba-figure { margin: 0; }
.ba-figure img { border-radius: var(--radius-lg); box-shadow: var(--shadow-md); }
.ba-figure figcaption { text-align: center; font-size: 0.8125rem; color: var(--color-muted-fg); margin-top: 1rem; font-style: italic; }

/* Testimonials ------------------------------------------------------------- */

.testimonials { padding: clamp(4rem, 8vw, 6rem) 0; background: var(--color-primary); color: var(--color-on-primary); }
.testimonials .h2, .testimonials .eyebrow { color: var(--color-on-primary); }
.testimonials .eyebrow { color: color-mix(in oklab, var(--color-accent) 80%, white); }

.t-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.5rem; }

.t-card {
  padding: 2rem;
  background: color-mix(in oklab, var(--color-on-primary) 5%, var(--color-primary));
  border: 1px solid color-mix(in oklab, var(--color-on-primary) 12%, transparent);
  border-radius: var(--radius-lg);
}
.t-card--feature { background: color-mix(in oklab, var(--color-accent) 15%, var(--color-primary)); border-color: var(--color-accent); }
.t-card blockquote { margin: 1rem 0; font-family: var(--font-display); font-style: italic; font-size: 1.0625rem; line-height: 1.6; color: var(--color-on-primary); }
[dir="rtl"] .t-card blockquote { font-family: var(--font-ar-display); font-style: normal; }
.t-card footer { font-size: 0.875rem; color: color-mix(in oklab, var(--color-on-primary) 70%, transparent); }
.t-card strong { color: var(--color-on-primary); }

/* Guarantee ---------------------------------------------------------------- */

.guarantee { padding: clamp(4rem, 8vw, 6rem) 0; background: var(--color-muted); }
.guarantee-inner { display: grid; grid-template-columns: auto 1fr; gap: 2rem; align-items: center; max-width: 920px; margin: 0 auto; }
.guarantee-badge svg { width: 88px; height: 88px; color: var(--color-accent); }

.trust-bar { list-style: none; padding: 0; margin: 1rem 0 0; display: flex; flex-wrap: wrap; gap: 0.625rem 1.25rem; }
.trust-bar li { font-size: 0.875rem; color: var(--color-secondary); position: relative; padding-inline-start: 1rem; }
.trust-bar li::before { content: '✓'; color: var(--color-accent); font-weight: 700; position: absolute; inset-inline-start: 0; }

/* Offer -------------------------------------------------------------------- */

.offer { padding: clamp(4rem, 8vw, 6rem) 0; }

.bundle-hero { margin: 0 0 2.5rem; }
.bundle-hero img { border-radius: var(--radius-lg); box-shadow: var(--shadow-md); max-height: 420px; object-fit: cover; width: 100%; }

.offer-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.5rem; }

.offer-card { padding: 2rem; background: var(--color-surface); border: 1.5px solid var(--color-border); border-radius: var(--radius-lg); position: relative; transition: all 250ms var(--ease); }
.offer-card:hover { border-color: var(--color-primary); transform: translateY(-4px); box-shadow: var(--shadow-md); }
.offer-card--best { border-color: var(--color-accent); background: linear-gradient(180deg, color-mix(in oklab, var(--color-accent) 4%, var(--color-surface)) 0%, var(--color-surface) 100%); }

.offer-tag { position: absolute; top: -12px; inset-inline-start: 1.5rem; background: var(--color-accent); color: white; font-size: 0.75rem; font-weight: 700; letter-spacing: 0.1em; padding: 0.35rem 0.75rem; border-radius: var(--radius-sm); }

.offer-card header span { font-size: 0.9375rem; font-weight: 600; color: var(--color-secondary); letter-spacing: 0.04em; }

.offer-price { display: flex; align-items: baseline; gap: 0.75rem; margin: 1rem 0 1.25rem; }
.offer-old { font-size: 1rem; color: var(--color-muted-fg); text-decoration: line-through; }
.offer-new { font-family: var(--font-display); font-weight: 800; font-size: 2.25rem; color: var(--color-primary); letter-spacing: -0.02em; }

.offer-card ul { list-style: none; padding: 0; margin: 0 0 1.5rem; display: grid; gap: 0.5rem; }
.offer-card li { font-size: 0.9375rem; color: var(--color-secondary); padding-inline-start: 1.5rem; position: relative; }
.offer-card li::before { content: '✓'; color: var(--color-accent); font-weight: 700; position: absolute; inset-inline-start: 0; }
.offer-card .btn { width: 100%; }

/* Form --------------------------------------------------------------------- */

.form-sec { padding: clamp(4rem, 8vw, 6rem) 0; background: var(--color-muted); }
.form-inner { max-width: 560px; margin: 0 auto; }

.cod-form { background: var(--color-surface); border: 1px solid var(--color-border); border-radius: var(--radius-lg); padding: clamp(1.5rem, 4vw, 2.5rem); box-shadow: var(--shadow-sm); }

.selected-bundle { padding: 0.875rem 1rem; background: color-mix(in oklab, var(--color-accent) 8%, var(--color-surface)); border: 1px solid color-mix(in oklab, var(--color-accent) 20%, var(--color-surface)); border-radius: var(--radius-sm); font-size: 0.9375rem; margin-bottom: 1.5rem; }
.selected-bundle strong { color: var(--color-primary); }

.field { margin-bottom: 1.25rem; }
.field label { display: block; font-size: 0.875rem; font-weight: 600; margin-bottom: 0.5rem; color: var(--color-primary); }
.field input, .field select {
  width: 100%;
  padding: 0.875rem 1rem;
  font: inherit;
  font-size: 1rem;
  color: var(--color-primary);
  background: var(--color-surface);
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-sm);
  transition: border-color 200ms var(--ease), box-shadow 200ms var(--ease);
}
.field input:focus, .field select:focus { outline: none; border-color: var(--color-accent); box-shadow: 0 0 0 3px color-mix(in oklab, var(--color-accent) 15%, transparent); }
.field input:invalid:not(:placeholder-shown) { border-color: var(--color-destructive); }
.field-hint { display: block; font-size: 0.8125rem; color: var(--color-muted-fg); margin-top: 0.375rem; }

.form-note { display: inline-flex; align-items: center; gap: 0.5rem; margin-top: 1rem; font-size: 0.8125rem; color: var(--color-muted-fg); }
.form-note svg { width: 16px; height: 16px; color: var(--color-success); flex-shrink: 0; }

.form-success { text-align: center; padding: 2rem; background: var(--color-surface); border: 1px solid var(--color-border); border-radius: var(--radius-lg); }
.form-success svg { width: 64px; height: 64px; color: var(--color-success); margin: 0 auto 1rem; }

/* FAQ ---------------------------------------------------------------------- */

.faq { padding: clamp(4rem, 8vw, 6rem) 0; }
.faq-list { max-width: 720px; margin: 0 auto; display: grid; gap: 0.75rem; }

.faq details {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1.25rem 1.5rem;
  transition: border-color 200ms var(--ease);
}
.faq details[open] { border-color: var(--color-primary); }
.faq summary { cursor: pointer; font-weight: 600; color: var(--color-primary); font-size: 1rem; list-style: none; display: flex; justify-content: space-between; gap: 1rem; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: '+'; font-size: 1.375rem; color: var(--color-accent); transition: transform 200ms var(--ease); line-height: 1; }
.faq details[open] summary::after { transform: rotate(45deg); }
.faq p { margin: 0.875rem 0 0; color: var(--color-muted-fg); }

/* Footer ------------------------------------------------------------------- */

.footer { background: var(--color-primary); color: var(--color-on-primary); padding: 3rem 0 2rem; }
.footer-inner { display: flex; flex-wrap: wrap; gap: 2rem; justify-content: space-between; align-items: flex-end; }
.footer-brand { display: flex; flex-direction: column; gap: 0.25rem; }
.footer-brand .brand-mark { color: var(--color-on-primary); font-size: 2rem; }
.footer-brand .brand-ar { color: color-mix(in oklab, var(--color-on-primary) 60%, transparent); }
.footer-brand p { font-size: 0.875rem; color: color-mix(in oklab, var(--color-on-primary) 70%, transparent); margin: 0.5rem 0 0; }
.footer-meta { font-size: 0.8125rem; color: color-mix(in oklab, var(--color-on-primary) 60%, transparent); text-align: end; }
.footer-meta p { margin: 0.25rem 0; }

/* Scroll reveal ------------------------------------------------------------ */

[data-section] > .container { opacity: 0; transform: translateY(24px); transition: opacity 700ms var(--ease), transform 700ms var(--ease); }
[data-section].visible > .container { opacity: 1; transform: none; }
[data-section="hero"] > .container { opacity: 1; transform: none; }

/* Responsive --------------------------------------------------------------- */

@media (max-width: 900px) {
  .hero-inner { grid-template-columns: 1fr; text-align: center; }
  [dir="rtl"] .hero-inner { text-align: center; }
  .hero-copy { order: 1; }
  .hero-figure { order: 2; max-width: 420px; margin: 0 auto; }
  .hero-cta { align-items: center; }
  [dir="rtl"] .hero-cta { align-items: center; }

  .solution-inner { grid-template-columns: 1fr; }

  .t-grid { grid-template-columns: 1fr; }
  .offer-grid { grid-template-columns: 1fr; }

  .guarantee-inner { grid-template-columns: 1fr; text-align: center; }
  .guarantee-badge { justify-self: center; }

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

@media (max-width: 480px) {
  .container { padding-inline: 1rem; }
  .btn-lg { padding: 1rem 1.25rem; font-size: 1rem; }
  .announce { font-size: 0.75rem; }
  .brand-ar { display: none; }
}

/* Reduced motion ----------------------------------------------------------- */

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; transition-duration: 0.01ms !important; }
  html { scroll-behavior: auto; }
}