/* ============================================================
   BingkaiLink - assets/css/style.css
   Design tokens: Primary #0265c2, BG #ffffff / #f8fafc, font Poppins
   ============================================================ */

:root {
  /* --- Warna --- */
  --color-primary: #0265c2;
  --color-primary-dark: #024f99;
  --color-primary-light: #e8f2fd;
  --color-bg: #ffffff;
  --color-bg-soft: #f8fafc;
  --color-text: #0f172a;
  --color-text-muted: #64748b;
  --color-border: #e2e8f0;
  --color-success: #16a34a;
  --color-danger: #dc2626;

  /* --- Aksen "human" untuk sticker/tape/highlight, dipakai secukupnya --- */
  --accent-coral: #ff6b45;
  --accent-yellow: #ffd23f;
  --font-display: 'Caveat', cursive;

  /* --- Radius & Shadow (kesan "mahal") --- */
  --radius-sm: 12px;
  --radius-md: 16px;
  --radius-lg: 20px;
  --radius-xl: 24px;
  --shadow-soft: 0 2px 8px rgba(15, 23, 42, 0.04), 0 8px 24px rgba(15, 23, 42, 0.06);
  --shadow-hover: 0 4px 14px rgba(2, 101, 194, 0.12), 0 12px 32px rgba(2, 101, 194, 0.10);

  /* --- Transisi --- */
  --transition-base: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: 'Poppins', -apple-system, BlinkMacSystemFont, sans-serif;
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }

/* --- Alignment global untuk ikon SVG inline (pengganti emoji) --- */
.icon {
  display: inline-block;
  vertical-align: -0.15em;
  flex-shrink: 0;
}

.container {
  width: 100%;
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 24px;
}

/* --- Fokus keyboard tetap terlihat (aksesibilitas) --- */
a:focus-visible, button:focus-visible, input:focus-visible, textarea:focus-visible {
  outline: 3px solid var(--color-primary-light);
  outline-offset: 2px;
}

/* ============================================================
   NAVBAR
   ============================================================ */
.navbar {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
}

.navbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 24px;
}

.logo {
  display: flex;
  align-items: center;
}
.logo-img {
  height: 32px;
  width: auto;
  display: block;
}

/* --- Verified badge global (dipakai via helper verified_badge()) --- */
.verified-badge-inline {
  display: inline-flex;
  vertical-align: -2px;
  margin-left: 4px;
  color: #0265c2;
}
.verified-badge-inline .icon { width: 14px; height: 14px; }

/* ============================================================
   BOTTOM TAB BAR — hanya mobile, sentuhan "semi mobile app"
   ============================================================ */
.mobile-tabbar {
  display: none;
  position: fixed;
  bottom: 0; left: 0; right: 0;
  z-index: 90;
  background: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(12px);
  border-top: 1px solid var(--color-border);
  padding: 6px 8px calc(6px + env(safe-area-inset-bottom, 0px));
  justify-content: space-around;
  align-items: center;
  box-shadow: 0 -2px 12px rgba(15,23,42,0.05);
}

.mobile-tabbar-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 3px;
  padding: 4px 10px;
  border-radius: var(--radius-sm);
  color: var(--color-text-muted);
  font-size: 0.66rem;
  font-weight: 600;
  transition: var(--transition-base);
}
.mobile-tabbar-item .icon { width: 21px; height: 21px; }
.mobile-tabbar-item.is-active { color: var(--color-primary); }
.mobile-tabbar-avatar {
  width: 21px; height: 21px; border-radius: 50%; object-fit: cover;
}
.mobile-tabbar-item.is-active .mobile-tabbar-avatar { box-shadow: 0 0 0 2px var(--color-primary); }

@media (max-width: 768px) {
  .mobile-tabbar { display: flex; }
  /* Beri ruang bawah supaya konten/footer tidak ketutup tab bar */
  body { padding-bottom: 62px; }
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
}

.nav-links a {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--color-text-muted);
  padding: 8px 12px;
  border-radius: 999px;
  transition: var(--transition-base);
}
.nav-links a .icon { width: 16px; height: 16px; flex-shrink: 0; }
.nav-links a:hover { color: var(--color-primary); background: var(--color-primary-light); }
.nav-links a.is-active { color: var(--color-primary); background: var(--color-primary-light); font-weight: 600; }

.nav-cta { display: flex; align-items: center; gap: 12px; }

.user-chip {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 6px 14px 6px 6px;
  border-radius: 999px;
  background: var(--color-bg-soft);
  border: 1px solid var(--color-border);
  transition: var(--transition-base);
}
.user-chip:hover { box-shadow: var(--shadow-soft); border-color: var(--color-primary); transform: translateY(-1px); }
.user-chip img {
  width: 30px; height: 30px; border-radius: 50%; object-fit: cover;
}
.user-chip span { font-size: 0.9rem; font-weight: 600; }

/* ============================================================
   TOMBOL MENU MOBILE — ikon hamburger <-> silang animasi cross-fade
   ============================================================ */
.mobile-menu-btn {
  display: none;
  position: relative;
  width: 38px; height: 38px;
  background: var(--color-bg-soft);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  cursor: pointer;
  align-items: center;
  justify-content: center;
  color: var(--color-text);
}
.mobile-menu-btn svg { position: absolute; transition: opacity 0.2s ease, transform 0.2s ease; }
.menu-icon-close { opacity: 0; transform: rotate(-45deg) scale(0.7); }
.mobile-menu-btn[aria-expanded="true"] .menu-icon-open { opacity: 0; transform: rotate(45deg) scale(0.7); }
.mobile-menu-btn[aria-expanded="true"] .menu-icon-close { opacity: 1; transform: rotate(0) scale(1); }

/* --- Backdrop gelap di belakang mobile menu --- */
.mobile-menu-backdrop {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.4);
  z-index: 98;
  opacity: 0;
  transition: opacity 0.25s ease;
}
.mobile-menu-backdrop.is-visible { display: block; opacity: 1; }

/* ============================================================
   BUTTONS
   ============================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: var(--radius-md);
  font-family: inherit;
  font-weight: 600;
  font-size: 0.95rem;
  border: none;
  cursor: pointer;
  transition: var(--transition-base);
  white-space: nowrap;
}

.btn-primary {
  background: var(--color-primary);
  color: #fff;
  box-shadow: var(--shadow-soft);
}
.btn-primary:hover {
  background: var(--color-primary-dark);
  transform: translateY(-2px);
  box-shadow: var(--shadow-hover);
}

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

.btn-ghost {
  background: var(--color-bg-soft);
  color: var(--color-text);
}
.btn-ghost:hover { background: var(--color-border); }

.btn-block { width: 100%; }
.btn-sm { padding: 8px 16px; font-size: 0.85rem; border-radius: var(--radius-sm); }

/* ============================================================
   CARDS
   ============================================================ */
.card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-soft);
  transition: var(--transition-base);
}
.card:hover { box-shadow: var(--shadow-hover); transform: translateY(-4px); }

/* ============================================================
   FORMS
   ============================================================ */
.form-group { margin-bottom: 18px; }

.form-label {
  display: block;
  font-weight: 600;
  font-size: 0.9rem;
  margin-bottom: 8px;
}

.form-control {
  width: 100%;
  padding: 12px 16px;
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-family: inherit;
  font-size: 0.95rem;
  transition: var(--transition-base);
  background: var(--color-bg-soft);
}
.form-control:focus {
  outline: none;
  border-color: var(--color-primary);
  background: #fff;
  box-shadow: 0 0 0 4px var(--color-primary-light);
}

textarea.form-control { resize: vertical; min-height: 100px; }

.form-hint { font-size: 0.8rem; color: var(--color-text-muted); margin-top: 6px; }
.form-error {
  background: #fef2f2;
  border: 1px solid #fecaca;
  color: var(--color-danger);
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  margin-bottom: 16px;
}
.form-success {
  background: #f0fdf4;
  border: 1px solid #bbf7d0;
  color: var(--color-success);
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  margin-bottom: 16px;
}

/* ============================================================
   BADGE
   ============================================================ */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  border-radius: 999px;
  background: var(--color-primary-light);
  color: var(--color-primary);
  font-size: 0.8rem;
  font-weight: 600;
}

/* ============================================================
   HERO (home.php)
   ============================================================ */
.hero {
  padding: 100px 24px 80px;
  text-align: center;
  background:
    radial-gradient(circle at 15% 20%, rgba(2, 101, 194, 0.06), transparent 40%),
    radial-gradient(circle at 85% 10%, rgba(2, 101, 194, 0.05), transparent 35%),
    var(--color-bg-soft);
}

.hero-badge {
  margin: 0 auto 20px;
}

.hero h1 {
  font-size: clamp(2rem, 5vw, 3.4rem);
  font-weight: 700;
  line-height: 1.15;
  margin: 0 0 20px;
  letter-spacing: -0.02em;
}

.hero h1 .highlight { color: var(--color-primary); }

.hero p.subtitle {
  max-width: 560px;
  margin: 0 auto 40px;
  color: var(--color-text-muted);
  font-size: 1.05rem;
}

/* --- Klaim handle input --- */
.claim-handle {
  max-width: 520px;
  margin: 0 auto 16px;
  display: flex;
  align-items: center;
  background: #fff;
  border: 2px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: 6px 6px 6px 20px;
  box-shadow: var(--shadow-soft);
  transition: var(--transition-base);
}
.claim-handle:focus-within {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 5px var(--color-primary-light);
}

.claim-prefix {
  color: var(--color-text-muted);
  font-weight: 500;
  font-size: 0.95rem;
  white-space: nowrap;
}

.claim-handle input {
  flex: 1;
  border: none;
  outline: none;
  font-family: inherit;
  font-size: 0.95rem;
  padding: 10px 6px;
  background: transparent;
  min-width: 0;
}

.claim-handle .btn { flex-shrink: 0; }

.hero-note { font-size: 0.85rem; color: var(--color-text-muted); }

/* ============================================================
   SECTION HEADINGS
   ============================================================ */
.section { padding: 70px 24px; }
.section-soft { background: var(--color-bg-soft); }

.section-header {
  text-align: center;
  max-width: 600px;
  margin: 0 auto 48px;
}
.section-header h2 {
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  font-weight: 700;
  margin: 0 0 12px;
}
.section-header p { color: var(--color-text-muted); margin: 0; }

/* ============================================================
   GRID BINGKAI POPULER
   ============================================================ */
.frame-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(230px, 1fr));
  gap: 24px;
}

.frame-card {
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.frame-card-thumb {
  aspect-ratio: 1 / 1;
  background: var(--color-bg-soft);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  position: relative;
}
.frame-card-thumb img {
  width: 100%; height: 100%; object-fit: cover;
}

.frame-card-body { padding: 16px 18px 18px; }
.frame-card-body h3 {
  font-size: 1rem;
  font-weight: 600;
  margin: 0 0 6px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.frame-card-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 10px;
}
.frame-card-usage {
  font-size: 0.78rem;
  color: var(--color-text-muted);
  display: flex;
  align-items: center;
  gap: 4px;
}

/* ============================================================
   STEPS / HOW IT WORKS
   ============================================================ */
.steps-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}
.step-item { text-align: center; padding: 8px; }
.step-icon {
  width: 64px; height: 64px;
  border-radius: var(--radius-lg);
  background: var(--color-primary-light);
  color: var(--color-primary);
  display: flex; align-items: center; justify-content: center;
  margin: 0 auto 20px;
  font-size: 1.6rem;
  font-weight: 700;
}
.step-item h3 { margin: 0 0 8px; font-size: 1.05rem; }
.step-item p { color: var(--color-text-muted); font-size: 0.9rem; margin: 0; }

/* ============================================================
   CTA BAND
   ============================================================ */
.cta-band {
  margin: 0 24px 70px;
  max-width: 1180px;
  margin-left: auto;
  margin-right: auto;
  background: linear-gradient(135deg, var(--color-primary), #024f99);
  border-radius: var(--radius-xl);
  padding: 60px 40px;
  text-align: center;
  color: #fff;
  box-shadow: var(--shadow-hover);
}
.cta-band h2 { font-size: 1.8rem; margin: 0 0 12px; }
.cta-band p { opacity: 0.9; margin: 0 0 28px; }
.cta-band .btn-primary {
  background: #fff;
  color: var(--color-primary);
}
.cta-band .btn-primary:hover { background: #f1f5f9; }

/* ============================================================
   FOOTER
   ============================================================ */
.site-footer {
  border-top: 1px solid var(--color-border);
  padding: 48px 24px 28px;
  background: var(--color-bg-soft);
}
.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: 32px;
  max-width: 1180px;
  margin: 0 auto;
}
.footer-brand p { color: var(--color-text-muted); font-size: 0.9rem; max-width: 280px; margin-top: 12px; }
.footer-links { display: flex; gap: 60px; flex-wrap: wrap; }
.footer-col h4 {
  display: flex; align-items: center; gap: 7px;
  font-size: 0.85rem; text-transform: uppercase; letter-spacing: 0.04em;
  color: var(--color-text-muted); margin: 0 0 14px;
}
.footer-col h4 .icon { width: 14px; height: 14px; }
.footer-col a {
  display: flex; align-items: center; gap: 8px;
  font-size: 0.9rem; margin-bottom: 10px; color: var(--color-text);
  transition: var(--transition-base);
}
.footer-col a .icon { width: 15px; height: 15px; color: var(--color-text-muted); flex-shrink: 0; transition: var(--transition-base); }
.footer-col a:hover { color: var(--color-primary); transform: translateX(2px); }
.footer-col a:hover .icon { color: var(--color-primary); }

.footer-bottom {
  max-width: 1180px;
  margin: 40px auto 0;
  padding-top: 24px;
  border-top: 1px solid var(--color-border);
  font-size: 0.82rem;
  color: var(--color-text-muted);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  flex-wrap: wrap;
  text-align: center;
}
.footer-bottom .icon { width: 13px; height: 13px; color: var(--accent-coral); animation: footer-heart-beat 1.8s ease-in-out infinite; }
@keyframes footer-heart-beat {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.15); }
}

/* --- Tombol "Kembali ke Atas" --- */
.back-to-top {
  position: fixed;
  right: 20px;
  bottom: 84px; /* di atas bottom tab bar mobile */
  width: 42px; height: 42px;
  border-radius: 50%;
  background: var(--color-primary);
  color: #fff;
  border: none;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 8px 20px rgba(2, 101, 194, 0.35);
  cursor: pointer;
  z-index: 80;
  opacity: 0;
  transform: translateY(12px) scale(0.9);
  pointer-events: none;
  transition: var(--transition-base);
}
.back-to-top.is-visible { opacity: 1; transform: translateY(0) scale(1); pointer-events: auto; }
.back-to-top:hover { background: var(--color-primary-dark); transform: translateY(-2px) scale(1.05); }
.back-to-top .icon { width: 18px; height: 18px; }

@media (min-width: 769px) {
  .back-to-top { bottom: 28px; }
}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 768px) {
  .mobile-menu-btn { display: flex; }
  .steps-grid { grid-template-columns: 1fr; }
  .claim-handle { flex-direction: column; align-items: stretch; border-radius: var(--radius-lg); padding: 14px; gap: 10px; }
  .claim-handle .btn { width: 100%; }
  .cta-band { padding: 40px 24px; }
  .footer-inner { flex-direction: column; }
}

@media (max-width: 768px) {
  .nav-links {
    display: flex;
    position: fixed;
    top: 65px;
    left: 12px;
    right: 12px;
    z-index: 99;
    background: #fff;
    flex-direction: column;
    align-items: stretch;
    padding: 10px;
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
    box-shadow: 0 16px 40px rgba(15, 23, 42, 0.16);
    gap: 2px;
    opacity: 0;
    transform: translateY(-10px) scale(0.98);
    pointer-events: none;
    transition: opacity 0.22s cubic-bezier(0.16, 1, 0.3, 1), transform 0.22s cubic-bezier(0.16, 1, 0.3, 1);
  }
  .nav-links.mobile-open {
    opacity: 1;
    transform: translateY(0) scale(1);
    pointer-events: auto;
  }
  .nav-links a { padding: 12px 14px; font-size: 0.98rem; }
  .nav-links a .icon { width: 18px; height: 18px; }
}

/* --- Navbar mengecil dikit saat discroll -- kesan "app" yang lebih halus --- */
.navbar.is-scrolled .navbar-inner { padding-top: 10px; padding-bottom: 10px; }
.navbar.is-scrolled { box-shadow: 0 2px 12px rgba(15,23,42,0.06); }

/* --- Hormati preferensi reduced motion --- */
@media (prefers-reduced-motion: reduce) {
  * { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
  html { scroll-behavior: auto; }
}