/* ========================================
   pjok.art — Emerald Trust Gaming UI
   Design System v1.0
   ======================================== */

/* --- CSS Variables / Design Tokens --- */
:root {
  /* Color Tokens */
  --color-primary: #E65F2B;
  --color-primary-dark: #C84A1A;
  --color-primary-soft: rgba(230, 95, 43, 0.12);
  --color-secondary: #1B3A5C;
  --color-accent: #C8D413;
  --color-bg: #EDF1F5;
  --color-bg-soft: #F4F6F9;
  --color-surface: #FFFFFF;
  --color-surface-strong: #F8FAFB;
  --color-card: #FFFFFF;
  --color-card-alt: #F6F8FB;
  --color-border: rgba(19, 32, 51, 0.12);
  --color-border-strong: rgba(19, 32, 51, 0.22);
  --color-text: #132033;
  --color-text-soft: #3A4D63;
  --color-text-muted: #5B6879;
  --color-success: #0D9F6E;
  --color-warning: #F59E0B;
  --color-danger: #DC2626;
  --color-footer-bg: #0F1923;
  --color-footer-text: #C5CDD7;

  /* Gradient Tokens */
  --gradient-hero: linear-gradient(135deg, #132033 0%, #1B3A5C 50%, #0F1923 100%);
  --gradient-hero-soft: linear-gradient(180deg, var(--color-bg) 0%, var(--color-bg-soft) 100%);
  --gradient-button: linear-gradient(135deg, var(--color-primary) 0%, #D4541F 100%);
  --gradient-button-hover: linear-gradient(135deg, #D4541F 0%, var(--color-primary) 100%);
  --gradient-cta: linear-gradient(135deg, var(--color-secondary) 0%, #243F5F 100%);
  --gradient-footer: linear-gradient(180deg, #0F1923 0%, #0A1118 100%);
  --gradient-form-panel: linear-gradient(135deg, #F8FAFB 0%, #EDF1F5 100%);

  /* Shadow Tokens */
  --shadow-header: 0 1px 3px rgba(0,0,0,0.08), 0 1px 2px rgba(0,0,0,0.06);
  --shadow-card: 0 4px 14px rgba(0,0,0,0.08);
  --shadow-card-hover: 0 12px 28px rgba(0,0,0,0.14);
  --shadow-button: 0 2px 6px rgba(230,95,43,0.25);
  --shadow-cta: 0 8px 24px rgba(230,95,43,0.18);
  --shadow-menu: 0 8px 32px rgba(0,0,0,0.18);
  --shadow-form: 0 4px 20px rgba(0,0,0,0.06);
  --shadow-soft: 0 2px 8px rgba(0,0,0,0.04);

  /* Radius Tokens */
  --radius-xs: 4px;
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-pill: 999px;
  --radius-card: 14px;
  --radius-image: 12px;
  --radius-form: 10px;

  /* Typography */
  --font-base: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Arial, "Noto Sans Bengali", sans-serif;
  --font-heading: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Arial, "Noto Sans Bengali", sans-serif;
  --fs-h1: clamp(28px, 4vw, 48px);
  --fs-h2: clamp(22px, 3vw, 36px);
  --fs-h3: clamp(18px, 2.2vw, 26px);
  --fs-body: 17px;
  --fs-small: 14px;
  --fs-nav: clamp(13px, 0.84vw, 15px);
  --fs-button: 15px;
  --lh-heading: 1.25;
  --lh-body: 1.85;
  --lh-readable: 1.9;

  /* Spacing */
  --container-max: 1180px;
  --container-wide: 1320px;
  --container-narrow: 780px;
  --section-y: clamp(48px, 6vw, 80px);
  --section-y-sm: clamp(32px, 4vw, 56px);
  --gap-xs: 4px;
  --gap-sm: 8px;
  --gap-md: 16px;
  --gap-lg: 24px;
  --gap-xl: 36px;
  --header-h: 68px;
  --mobile-header-h: 62px;
  --card-padding: clamp(16px, 2vw, 24px);
  --footer-padding: clamp(32px, 4vw, 56px);

  /* Motion */
  --motion-fast: 0.15s;
  --motion-normal: 0.25s;
  --motion-slow: 0.4s;
  --ease-out: cubic-bezier(0.33, 1, 0.68, 1);
  --ease-soft: cubic-bezier(0.25, 0.1, 0.25, 1);
}

/* --- Reset & Base --- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; overflow-x: hidden; max-width: 100vw; }

body {
  font-family: var(--font-base);
  font-size: var(--fs-body);
  line-height: var(--lh-body);
  color: var(--color-text);
  background: var(--color-bg);
  margin: 0;
  padding: 0;
  padding-top: var(--header-h);
  overflow-x: hidden;
  -webkit-text-size-adjust: 100%;
  word-break: normal;
  overflow-wrap: break-word;
}

img { max-width: 100%; height: auto; display: block; }
a { color: var(--color-primary); text-decoration: none; transition: color var(--motion-fast); }
a:hover { color: var(--color-accent); }

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  color: var(--color-text);
  line-height: var(--lh-heading);
  font-weight: 800;
  margin: 0 0 16px;
}
h1 { font-size: var(--fs-h1); }
h2 { font-size: var(--fs-h2); font-weight: 900; }
h3 { font-size: var(--fs-h3); font-weight: 700; }

p { margin: 0 0 18px; }
ul, ol { padding-left: 20px; }

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

/* --- Container --- */
.container { max-width: var(--container-max); margin: 0 auto; padding: 0 clamp(16px, 3vw, 24px); }
.container-wide { max-width: var(--container-wide); margin: 0 auto; padding: 0 clamp(16px, 3vw, 24px); }
.container-narrow { max-width: var(--container-narrow); margin: 0 auto; padding: 0 clamp(16px, 3vw, 24px); }

/* --- Section Spacing --- */
.section { padding: var(--section-y) 0; position: relative; }
.section-soft { background: var(--color-bg-soft); }
.section-surface { background: var(--color-surface); }
.section-dark { background: var(--color-secondary); color: #fff; }
.section-dark h2, .section-dark h3 { color: #fff; }
.section + .section { border-top: 1px solid var(--color-border); }

/* ========================================
   HEADER
   ======================================== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(255,255,255,0.94);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
  box-shadow: var(--shadow-header);
  height: var(--header-h);
}

.header-inner {
  width: 100%;
  max-width: none;
  padding-left: clamp(10px, 1.2vw, 20px);
  padding-right: clamp(10px, 1.2vw, 20px);
  height: 100%;
  display: flex;
  align-items: center;
  gap: clamp(10px, 1vw, 18px);
}

.brand-wrap {
  flex: 0 0 auto;
  margin-right: clamp(4px, 0.8vw, 14px);
  display: flex;
  align-items: center;
  text-decoration: none;
}

.site-logo {
  display: block;
  width: auto;
  height: clamp(32px, 3vw, 42px);
  max-width: clamp(118px, 10vw, 168px);
  object-fit: contain;
}

.primary-nav {
  flex: 1 1 auto;
  min-width: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: nowrap;
  gap: clamp(6px, 0.72vw, 14px);
  white-space: nowrap;
  overflow: visible;
}

.primary-nav a {
  flex: 0 1 auto;
  min-width: 0;
  padding: 9px clamp(6px, 0.65vw, 12px);
  font-size: var(--fs-nav);
  line-height: 1;
  white-space: nowrap;
  color: var(--color-text-soft);
  font-weight: 600;
  border-radius: var(--radius-sm);
  transition: color var(--motion-fast), background var(--motion-fast);
  text-decoration: none;
}

.primary-nav a:hover {
  color: var(--color-primary);
  background: var(--color-primary-soft);
}

.primary-nav a.active {
  color: var(--color-primary);
  font-weight: 800;
  background: var(--color-primary-soft);
}

.header-actions {
  flex: 0 0 auto;
  margin-left: auto;
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: clamp(6px, 0.6vw, 10px);
  white-space: nowrap;
}

.nav-toggle {
  display: none;
  flex: 0 0 42px;
  width: 42px;
  height: 42px;
  align-items: center;
  justify-content: center;
  background: none;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  cursor: pointer;
  padding: 0;
  transition: background var(--motion-fast);
}

.nav-toggle:hover { background: var(--color-bg-soft); }

.nav-toggle span {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--color-text);
  margin: 3px auto;
  border-radius: 1px;
  transition: transform var(--motion-normal);
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 20px;
  font-size: var(--fs-button);
  font-weight: 600;
  border-radius: var(--radius-sm);
  border: none;
  cursor: pointer;
  text-decoration: none;
  white-space: nowrap;
  transition: all var(--motion-fast) var(--ease-soft);
  line-height: 1.2;
  min-height: 42px;
}

.btn-primary {
  background: var(--gradient-button);
  color: #fff;
  box-shadow: var(--shadow-button);
}
.btn-primary:hover {
  background: var(--gradient-button-hover);
  color: #fff;
  transform: translateY(-1px);
  box-shadow: var(--shadow-cta);
}

.btn-secondary {
  background: var(--color-secondary);
  color: #fff;
}
.btn-secondary:hover {
  background: #243F5F;
  color: #fff;
  transform: translateY(-1px);
}

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

.btn-login {
  background: transparent;
  color: var(--color-text);
  border: 1.5px solid var(--color-border-strong);
  padding: 8px 16px;
  font-size: 14px;
}
.btn-login:hover {
  background: var(--color-bg-soft);
  color: var(--color-primary);
  border-color: var(--color-primary);
}

.btn-register {
  background: var(--gradient-button);
  color: #fff;
  padding: 8px 16px;
  font-size: 14px;
  box-shadow: var(--shadow-button);
}
.btn-register:hover {
  background: var(--gradient-button-hover);
  color: #fff;
  transform: translateY(-1px);
}

.btn-lg { padding: 14px 28px; font-size: 17px; min-height: 48px; }

/* --- Cards --- */
.card {
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  padding: var(--card-padding);
  box-shadow: var(--shadow-soft);
  transition: transform var(--motion-normal) var(--ease-out), box-shadow var(--motion-normal);
}
.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-card-hover);
}

.card-alt {
  background: var(--color-card-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  padding: var(--card-padding);
}

.card-flat { box-shadow: none; border: none; background: transparent; }
.card-flat:hover { transform: none; box-shadow: none; }

/* Card Variants */
.feature-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  padding: clamp(20px, 2.5vw, 28px);
  position: relative;
  overflow: hidden;
}
.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--gradient-button);
}

.trust-card {
  background: var(--color-bg-soft);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: clamp(20px, 2.5vw, 32px);
  text-align: center;
}

.step-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  padding: clamp(20px, 2.5vw, 28px);
  position: relative;
  padding-left: 60px;
}
.step-card .step-num {
  position: absolute;
  left: 16px;
  top: 50%;
  transform: translateY(-50%);
  width: 36px;
  height: 36px;
  background: var(--color-primary);
  color: #fff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 16px;
}

/* --- Grid Systems --- */
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: var(--gap-lg); }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--gap-lg); }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--gap-lg); }
.grid-2-1 { display: grid; grid-template-columns: 2fr 1fr; gap: var(--gap-xl); align-items: start; }
.grid-1-2 { display: grid; grid-template-columns: 1fr 2fr; gap: var(--gap-xl); align-items: start; }

/* --- Hero Variants --- */
.home-hero {
  background: var(--gradient-hero);
  color: #fff;
  padding: clamp(48px, 8vw, 96px) 0;
  position: relative;
  overflow: hidden;
}
.home-hero h1, .home-hero h2, .home-hero h3 { color: #fff; }
.home-hero .lead { color: rgba(255,255,255,0.85); font-size: clamp(16px, 1.8vw, 20px); }
.home-hero::after {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 85% 15%, rgba(230,95,43,0.15), transparent 55%);
  pointer-events: none;
}

.inner-hero {
  background: var(--gradient-hero-soft);
  padding: clamp(32px, 5vw, 56px) 0;
  border-bottom: 1px solid var(--color-border);
}

.auth-hero {
  background: var(--gradient-form-panel);
  padding: clamp(36px, 5vw, 64px) 0;
  border-bottom: 1px solid var(--color-border);
}

/* --- Breadcrumb --- */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--color-text-muted);
  margin-bottom: 16px;
  flex-wrap: wrap;
}
.breadcrumb a { color: var(--color-text-muted); }
.breadcrumb a:hover { color: var(--color-primary); }
.breadcrumb .sep { opacity: 0.5; }

/* --- Prose / Article Content --- */
.prose { max-width: 820px; }
.prose p { font-size: 17px; line-height: var(--lh-readable); margin: 0 0 18px; }
.prose h2 { font-size: clamp(24px, 3vw, 34px); margin: 36px 0 16px; }
.prose h3 { font-size: clamp(19px, 2vw, 24px); margin: 28px 0 12px; }
.prose ul, .prose ol { margin: 0 0 18px; }
.prose li { margin-bottom: 8px; }
.prose img { border-radius: var(--radius-image); margin: 24px 0; }

/* --- Tables --- */
.table-wrap { overflow-x: auto; margin: 24px 0; border-radius: var(--radius-md); border: 1px solid var(--color-border); }
.table-wrap table { width: 100%; border-collapse: collapse; min-width: 480px; }
.table-wrap th { background: var(--color-bg-soft); font-weight: 700; text-align: left; padding: 12px 16px; font-size: 14px; }
.table-wrap td { padding: 12px 16px; border-top: 1px solid var(--color-border); font-size: 15px; }
.table-wrap tr:hover td { background: var(--color-primary-soft); }

/* --- FAQ --- */
.faq-group { margin: 24px 0; }
.faq-item {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  margin-bottom: 8px;
  overflow: hidden;
  background: var(--color-surface);
}
.faq-question {
  width: 100%;
  background: none;
  border: none;
  padding: 16px 48px 16px 20px;
  font-size: 16px;
  font-weight: 600;
  color: var(--color-text);
  text-align: left;
  cursor: pointer;
  position: relative;
  font-family: inherit;
  line-height: 1.4;
  transition: background var(--motion-fast);
}
.faq-question:hover { background: var(--color-bg-soft); }
.faq-question::after {
  content: '+';
  position: absolute;
  right: 16px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 22px;
  font-weight: 300;
  color: var(--color-primary);
  transition: transform var(--motion-normal);
}
.faq-question[aria-expanded="true"]::after {
  content: '−';
  transform: translateY(-50%) rotate(0deg);
}
.faq-question[aria-expanded="true"] { background: var(--color-primary-soft); color: var(--color-primary-dark); }

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--motion-slow) var(--ease-out);
}
.faq-answer.is-open { max-height: 600px; }
.faq-answer-inner { padding: 0 20px 20px; font-size: 15px; line-height: 1.75; color: var(--color-text-soft); }

/* --- Forms --- */
.form-group { margin-bottom: 20px; }
.form-label { display: block; font-weight: 600; margin-bottom: 6px; font-size: 14px; color: var(--color-text); }
.form-input {
  width: 100%;
  padding: 12px 16px;
  border: 1.5px solid var(--color-border-strong);
  border-radius: var(--radius-form);
  font-size: 16px;
  font-family: inherit;
  background: var(--color-surface);
  color: var(--color-text);
  transition: border-color var(--motion-fast), box-shadow var(--motion-fast);
}
.form-input:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-soft);
}
.form-hint { font-size: 13px; color: var(--color-text-muted); margin-top: 4px; }
.form-error { font-size: 13px; color: var(--color-danger); margin-top: 4px; display: none; }

/* --- Auth Layout --- */
.auth-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--gap-xl);
  align-items: start;
}
.auth-form-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: clamp(24px, 3vw, 40px);
  box-shadow: var(--shadow-form);
}
.auth-trust-card {
  background: var(--color-bg-soft);
  border-radius: var(--radius-lg);
  padding: clamp(24px, 3vw, 36px);
}

/* --- CTA Variants --- */
.cta-band {
  background: var(--gradient-cta);
  color: #fff;
  padding: clamp(36px, 5vw, 64px) 0;
  text-align: center;
  border-radius: var(--radius-lg);
  margin: var(--gap-xl) 0;
}
.cta-band h2, .cta-band h3 { color: #fff; }
.cta-band .lead { color: rgba(255,255,255,0.8); }

.cta-inline {
  background: var(--color-primary-soft);
  border: 1px solid rgba(230,95,43,0.2);
  border-radius: var(--radius-lg);
  padding: clamp(24px, 3vw, 36px);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--gap-lg);
  flex-wrap: wrap;
}

/* --- Info/Alert Boxes --- */
.info-box {
  background: var(--color-bg-soft);
  border-left: 4px solid var(--color-primary);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  padding: 16px 20px;
  margin: 20px 0;
  font-size: 15px;
}

.warning-box {
  background: #FEF3C7;
  border-left: 4px solid var(--color-warning);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  padding: 16px 20px;
  margin: 20px 0;
  font-size: 15px;
}

/* --- Policy Layout --- */
.policy-layout { max-width: 820px; }
.policy-toc {
  background: var(--color-bg-soft);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 20px 24px;
  margin-bottom: 32px;
}
.policy-toc h3 { font-size: 16px; margin-bottom: 12px; }
.policy-toc ol { margin: 0; padding-left: 20px; }
.policy-toc li { margin-bottom: 6px; }
.policy-toc a { font-size: 14px; }

.policy-updated {
  background: var(--color-primary-soft);
  border-radius: var(--radius-sm);
  padding: 10px 16px;
  font-size: 13px;
  margin-bottom: 24px;
  display: inline-block;
}

/* --- Eyebrow / Badge --- */
.eyebrow {
  display: inline-block;
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-primary);
  margin-bottom: 12px;
  padding: 6px 14px;
  background: var(--color-primary-soft);
  border-radius: var(--radius-pill);
  line-height: 1.2;
}

.badge-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  background: var(--color-primary);
  color: #fff;
  border-radius: 50%;
  font-weight: 800;
  font-size: 14px;
}

.age-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  background: #c0392b;
  border-radius: 50%;
  font-size: 11px;
  font-weight: 700;
  color: #fff;
}

/* --- Stat Row --- */
.stat-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: clamp(16px, 2vw, 24px);
}
.stat-item { text-align: center; }
.stat-value { font-size: clamp(24px, 3vw, 36px); font-weight: 900; color: var(--color-primary); }
.stat-label { font-size: 13px; color: var(--color-text-muted); margin-top: 4px; }

/* --- Footer --- */
.site-footer {
  background: var(--gradient-footer);
  color: var(--color-footer-text);
  padding: var(--footer-padding) 0 24px;
  margin-top: 48px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: clamp(16px, 2vw, 28px);
  margin-bottom: 28px;
}

.footer-brand h3 { font-size: 20px; color: var(--color-primary); margin-bottom: 10px; font-weight: 800; }
.footer-brand p { font-size: 14px; color: var(--color-footer-text); line-height: 1.6; margin-bottom: 12px; }

.footer-col h4 { font-size: 14px; color: #fff; font-weight: 700; margin-bottom: 12px; text-transform: uppercase; letter-spacing: 0.05em; }
.footer-col a { display: block; font-size: 14px; color: var(--color-footer-text); margin-bottom: 8px; transition: color var(--motion-fast); }
.footer-col a:hover { color: var(--color-primary); }

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding-top: 16px;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 12px;
  color: rgba(255,255,255,0.4);
}

/* --- Mobile Menu --- */
#mobile-menu {
  display: none;
  position: fixed;
  top: var(--header-h);
  left: 0;
  right: 0;
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  box-shadow: var(--shadow-menu);
  padding: 16px;
  max-height: calc(100vh - var(--header-h));
  overflow-y: auto;
  z-index: 999;
}
#mobile-menu.is-open { display: block; }
#mobile-menu a {
  display: block;
  padding: 14px 12px;
  font-size: 16px;
  font-weight: 600;
  color: var(--color-text);
  border-radius: var(--radius-sm);
  text-decoration: none;
}
#mobile-menu a:hover, #mobile-menu a.active {
  color: var(--color-primary);
  background: var(--color-primary-soft);
}

/* --- Back to Top --- */
.back-top {
  position: fixed;
  right: 16px;
  bottom: 80px;
  width: 44px;
  height: 44px;
  background: var(--color-primary);
  color: #fff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  text-decoration: none;
  box-shadow: 0 4px 16px rgba(0,0,0,0.25);
  z-index: 100;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--motion-normal), transform var(--motion-fast);
}
.back-top.show { opacity: 1; pointer-events: auto; }
.back-top:hover { transform: translateY(-2px); color: #fff; }

/* --- Image Utilities --- */
.img-rounded { border-radius: var(--radius-image); }
.img-shadow { box-shadow: var(--shadow-card); }
.img-cover { object-fit: cover; width: 100%; }

/* --- Swiper Fallback --- */
.swiper:not(.swiper-initialized) {
  display: flex;
  overflow-x: auto;
  gap: 16px;
  scroll-snap-type: x mandatory;
  -webkit-overflow-scrolling: touch;
}
.swiper:not(.swiper-initialized) .swiper-slide {
  flex: 0 0 auto;
  scroll-snap-align: start;
}

/* --- AOS Fallback --- */
[data-aos] { opacity: 1 !important; transform: none !important; }

/* ========================================
   RESPONSIVE
   ======================================== */

/* Tablet */
@media (max-width: 1180px) {
  .primary-nav { display: none; }
  .nav-toggle { display: inline-flex; }

  .site-header .header-inner {
    width: 100%;
    max-width: none;
    padding-left: clamp(8px, 2.4vw, 14px);
    padding-right: clamp(8px, 2.4vw, 14px);
    justify-content: flex-start;
    gap: clamp(6px, 1.8vw, 10px);
  }

  .brand-wrap { flex: 0 1 auto; margin-right: 0; }
  .site-logo { height: clamp(30px, 8vw, 40px); max-width: clamp(104px, 27vw, 138px); }

  .header-actions {
    margin-left: auto;
    flex: 0 0 auto;
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: clamp(5px, 1.6vw, 8px);
    white-space: nowrap;
  }

  .header-actions .btn { min-height: 40px; padding-inline: clamp(10px, 2.6vw, 14px); font-size: clamp(12px, 3.2vw, 14px); }

  .nav-toggle {
    display: inline-flex;
    flex: 0 0 40px;
    width: 40px;
    height: 40px;
    align-items: center;
    justify-content: center;
    margin-left: 2px;
  }
}

@media (max-width: 900px) {
  body { padding-top: var(--mobile-header-h); }
  .site-header { height: var(--mobile-header-h); }
  #mobile-menu { top: var(--mobile-header-h); }

  .grid-2, .grid-3, .grid-4, .grid-2-1, .grid-1-2, .auth-layout { grid-template-columns: 1fr; }
  .stat-row { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 16px; }
}

@media (max-width: 640px) {
  .section { padding: var(--section-y-sm) 0; }
  .footer-grid { grid-template-columns: 1fr; }
  .cta-inline { flex-direction: column; text-align: center; }
}

@media (max-width: 414px) {
  .btn-lg { padding: 12px 20px; font-size: 15px; }
  .home-hero { padding: 36px 0; }
}

@media (max-width: 375px) {
  .site-header .header-inner { padding-left: 8px; padding-right: 8px; gap: 6px; }
  .site-logo { max-width: 104px; }
  .header-actions .btn { min-height: 38px; padding-inline: 9px; font-size: 12px; }
  .nav-toggle { flex-basis: 38px; width: 38px; height: 38px; }
  body { font-size: 16px; }
}

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

/* --- Touch Device --- */
@media (pointer: coarse) {
  .btn, .faq-question, #mobile-menu a { min-height: 44px; }
}

/* --- Print --- */
@media print {
  .site-header, .site-footer, .nav-toggle, .back-top, #mobile-menu, #br-stick { display: none !important; }
  body { padding-top: 0; }
}