:root {
  --neu-blue: #003d7c;
  --neu-blue-light: #0056b3;
  --neu-blue-dark: #002a57;
  --neu-accent: #4a90d9;
  --neu-gold: #c9a84c;
  --bg: #f5f7fa;
  --bg-card: #ffffff;
  --text: #1a1a2e;
  --text-muted: #6c757d;
  --border: #e2e8f0;
  --serif: 'Noto Serif SC', serif;
  --sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --radius: 16px;
  --shadow: 0 4px 24px rgba(0,61,124,0.08);
  --shadow-lg: 0 8px 40px rgba(0,61,124,0.12);
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--sans);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  min-height: 100vh;
  overflow-x: hidden;
}

/* Navbar */
.navbar { padding: 12px 0; transition: all var(--transition); background: transparent !important; }
.navbar.scrolled { background: rgba(0,61,124,0.95) !important; backdrop-filter: blur(16px); -webkit-backdrop-filter: blur(16px); box-shadow: 0 2px 20px rgba(0,0,0,0.15); }
.navbar-brand { font-family: var(--serif); font-size: 1.3rem; letter-spacing: 0.02em; }
.brand-icon { font-size: 1.4rem; }
.nav-link { font-size: 0.95rem; transition: opacity var(--transition); }
.nav-link:hover { opacity: 0.8; }

/* Hero */
.hero { position: relative; min-height: 100vh; display: flex; align-items: center; justify-content: center; text-align: center; padding: 120px 20px 100px; overflow: hidden; }
.hero__bg { position: absolute; inset: 0; background-image: linear-gradient(180deg, rgba(0,42,87,0.75) 0%, rgba(0,61,124,0.55) 40%, rgba(245,247,250,0) 85%, var(--bg) 100%), url('/static/images/hero1.jpg'); background-position: center; background-size: cover; transform: scale(1.05); animation: heroZoom 20s ease-in-out infinite alternate; }
@keyframes heroZoom { from { transform: scale(1.05); } to { transform: scale(1.12); } }
.hero__content { position: relative; z-index: 1; max-width: 640px; }
.hero__badge { display: inline-flex; align-items: center; gap: 8px; padding: 8px 20px; margin-bottom: 28px; background: rgba(255,255,255,0.15); backdrop-filter: blur(12px); border-radius: 999px; font-size: 0.95rem; color: rgba(255,255,255,0.95); border: 1px solid rgba(255,255,255,0.25); animation: fadeSlideDown 0.8s ease-out both; }
.hero__badge-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--neu-gold); box-shadow: 0 0 8px rgba(201,168,76,0.6); animation: pulse 2s ease-in-out infinite; }
.hero__title { font-family: var(--serif); font-size: clamp(2.5rem, 6vw, 4rem); font-weight: 700; color: #fff; margin-bottom: 16px; line-height: 1.25; text-shadow: 0 4px 20px rgba(0,0,0,0.3); animation: fadeSlideDown 0.8s 0.15s ease-out both; }
.hero__subtitle { font-size: 1.15rem; color: rgba(255,255,255,0.92); max-width: 480px; margin: 0 auto 36px; line-height: 1.7; text-shadow: 0 2px 12px rgba(0,0,0,0.2); animation: fadeSlideDown 0.8s 0.3s ease-out both; }
.hero__cta { animation: fadeSlideDown 0.8s 0.45s ease-out both; }
.hero__hint { font-size: 0.85rem; color: rgba(255,255,255,0.65); margin-top: 20px; animation: fadeSlideDown 0.8s 0.6s ease-out both; }

/* Buttons */
.btn-neu { background: linear-gradient(135deg, var(--neu-blue), var(--neu-blue-light)); color: #fff; border: none; padding: 12px 36px; border-radius: 999px; font-size: 1.05rem; font-weight: 600; transition: all var(--transition); box-shadow: 0 4px 16px rgba(0,61,124,0.3); position: relative; overflow: hidden; }
.btn-neu:hover { transform: translateY(-3px); box-shadow: 0 8px 28px rgba(0,61,124,0.4); color: #fff; }
.btn-neu:active { transform: translateY(-1px); }
.btn-neu-outline { background: transparent; color: var(--neu-blue); border: 2px solid var(--neu-blue); padding: 10px 32px; border-radius: 999px; font-weight: 600; transition: all var(--transition); }
.btn-neu-outline:hover { background: var(--neu-blue); color: #fff; transform: translateY(-2px); box-shadow: 0 4px 16px rgba(0,61,124,0.3); }
.btn-neu-white { background: rgba(255,255,255,0.2); backdrop-filter: blur(12px); color: #fff; border: 1px solid rgba(255,255,255,0.3); padding: 12px 36px; border-radius: 999px; font-weight: 600; transition: all var(--transition); }
.btn-neu-white:hover { background: rgba(255,255,255,0.35); color: #fff; transform: translateY(-2px); }

/* Cards */
.neu-card { background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius); padding: 32px 24px; transition: all var(--transition); }
.neu-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); border-color: rgba(0,61,124,0.15); }
.neu-card__icon { display: inline-flex; align-items: center; justify-content: center; width: 56px; height: 56px; border-radius: 14px; background: linear-gradient(135deg, rgba(0,61,124,0.08), rgba(74,144,217,0.12)); font-size: 1.5rem; margin-bottom: 20px; transition: transform var(--transition); }
.neu-card:hover .neu-card__icon { transform: scale(1.1) rotate(5deg); }

/* Section */
.section { padding: 80px 0; }
.section-title { font-family: var(--serif); font-size: 2rem; font-weight: 700; text-align: center; margin-bottom: 16px; }
.section-subtitle { text-align: center; color: var(--text-muted); max-width: 500px; margin: 0 auto 48px; }

/* Photo bg sections */
.section-photo-bg { position: relative; overflow: hidden; padding: 100px 0; }
.section-photo-bg__img { position: absolute; inset: 0; background-size: cover; background-position: center; background-attachment: fixed; }
.section-photo-bg__overlay { position: absolute; inset: 0; }
.section-photo-bg__content { position: relative; z-index: 1; }

/* Stats */
.stat-item { text-align: center; padding: 24px; }
.stat-number { font-family: var(--serif); font-size: 2.5rem; font-weight: 700; color: var(--neu-blue); transition: transform var(--transition); }
.stat-item:hover .stat-number { transform: scale(1.1); }
.stat-label { color: var(--text-muted); font-size: 0.9rem; margin-top: 4px; }

/* Steps */
.step-card { text-align: center; padding: 32px 20px; transition: transform var(--transition); }
.step-card:hover { transform: translateY(-4px); }
.step-num { display: inline-flex; align-items: center; justify-content: center; width: 56px; height: 56px; border-radius: 50%; background: linear-gradient(135deg, var(--neu-blue), var(--neu-accent)); color: #fff; font-weight: 700; font-size: 1.25rem; margin-bottom: 16px; box-shadow: 0 4px 16px rgba(0,61,124,0.3); transition: transform var(--transition); }
.step-card:hover .step-num { transform: scale(1.15); }
.step-title { font-family: var(--serif); font-size: 1.2rem; margin-bottom: 8px; }

/* Countdown */
.countdown-bar { background: linear-gradient(135deg, var(--neu-blue-dark), var(--neu-blue)); color: #fff; padding: 28px; border-radius: var(--radius); text-align: center; box-shadow: 0 8px 32px rgba(0,61,124,0.2); }
.countdown-timer { display: flex; justify-content: center; gap: 12px; margin: 16px 0; }
.cd-block { background: rgba(255,255,255,0.12); backdrop-filter: blur(8px); border-radius: 12px; padding: 14px 18px; min-width: 72px; border: 1px solid rgba(255,255,255,0.15); transition: transform var(--transition); }
.cd-block:hover { transform: scale(1.08); }
.cd-num { font-family: var(--serif); font-size: 1.8rem; font-weight: 700; line-height: 1; }
.cd-label { font-size: 0.7rem; opacity: 0.7; margin-top: 4px; text-transform: uppercase; }

/* Gallery */
.gallery-img { border-radius: 16px; overflow: hidden; position: relative; cursor: pointer; }
.gallery-img img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.6s ease; }
.gallery-img:hover img { transform: scale(1.08); }
.gallery-img::after { content: ''; position: absolute; inset: 0; background: linear-gradient(180deg, transparent 60%, rgba(0,42,87,0.4) 100%); opacity: 0; transition: opacity var(--transition); }
.gallery-img:hover::after { opacity: 1; }

/* FAQ */
.faq-item { border: 1px solid var(--border); border-radius: 12px; margin-bottom: 12px; overflow: hidden; transition: box-shadow var(--transition); }
.faq-item:hover { box-shadow: var(--shadow); }
.faq-item .accordion-button { font-weight: 600; background: var(--bg-card); transition: all var(--transition); }
.faq-item .accordion-button:not(.collapsed) { background: rgba(0,61,124,0.04); color: var(--neu-blue); }

/* Auth */
.auth-container { min-height: 100vh; display: flex; align-items: center; justify-content: center; padding: 80px 20px; background: linear-gradient(135deg, rgba(0,42,87,0.85), rgba(0,61,124,0.75)), url('/static/images/hero3.jpg') center/cover no-repeat; }
.auth-card { background: rgba(255,255,255,0.97); backdrop-filter: blur(20px); border-radius: 24px; padding: 44px 36px; width: 100%; max-width: 440px; box-shadow: 0 20px 60px rgba(0,0,0,0.2); animation: fadeSlideUp 0.6s ease-out; }
.auth-card h2 { font-family: var(--serif); color: var(--neu-blue); margin-bottom: 8px; }
.auth-tabs { display: flex; margin-bottom: 28px; background: var(--bg); border-radius: 12px; padding: 4px; }
.auth-tab { flex: 1; padding: 10px; text-align: center; border: none; background: transparent; border-radius: 10px; font-weight: 600; color: var(--text-muted); cursor: pointer; transition: all var(--transition); }
.auth-tab.active { background: var(--bg-card); color: var(--neu-blue); box-shadow: 0 2px 8px rgba(0,0,0,0.08); }

/* Form */
.form-control, .form-select { border-radius: 12px; padding: 12px 16px; border: 1px solid var(--border); transition: all var(--transition); }
.form-control:focus, .form-select:focus { border-color: var(--neu-accent); box-shadow: 0 0 0 4px rgba(74,144,217,0.12); }
.input-group .btn { border-radius: 0 12px 12px 0; }

/* Dashboard */
.dash-header { background: linear-gradient(135deg, rgba(0,42,87,0.88), rgba(0,86,179,0.82)), url('/static/images/hero5.jpg') center/cover no-repeat; color: #fff; padding: 100px 0 60px; margin-bottom: -40px; }
.dash-card { background: var(--bg-card); border-radius: var(--radius); padding: 24px; border: 1px solid var(--border); box-shadow: var(--shadow); height: 100%; transition: all var(--transition); }
.dash-card:hover { box-shadow: var(--shadow-lg); transform: translateY(-2px); }
.dash-card__title { font-size: 0.85rem; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.05em; margin-bottom: 8px; }

/* Survey */
.survey-progress { position: sticky; top: 70px; z-index: 10; background: rgba(255,255,255,0.95); backdrop-filter: blur(12px); border-bottom: 1px solid var(--border); padding: 12px 0; }
.survey-section { background: var(--bg-card); border-radius: var(--radius); padding: 32px; margin-bottom: 24px; border: 1px solid var(--border); animation: fadeSlideUp 0.4s ease-out; }
.survey-q { margin-bottom: 28px; padding-bottom: 28px; border-bottom: 1px solid var(--border); }
.survey-q:last-child { border-bottom: none; margin-bottom: 0; padding-bottom: 0; }
.survey-q__label { font-weight: 600; margin-bottom: 12px; font-size: 1rem; }
.survey-q__hint { font-size: 0.85rem; color: var(--text-muted); margin-bottom: 12px; }
.scale-row { display: flex; align-items: center; gap: 12px; }
.scale-row .form-range { flex: 1; }
.scale-label { font-size: 0.8rem; color: var(--text-muted); min-width: 80px; }
.scale-label:last-child { text-align: right; }
.scale-value { font-weight: 700; color: var(--neu-blue); min-width: 32px; text-align: center; font-size: 1.1rem; background: rgba(0,61,124,0.06); border-radius: 8px; padding: 2px 8px; }
.choice-group { display: flex; flex-wrap: wrap; gap: 8px; }
.choice-btn { padding: 8px 20px; border: 2px solid var(--border); border-radius: 999px; background: transparent; cursor: pointer; transition: all var(--transition); font-size: 0.9rem; }
.choice-btn:hover { border-color: var(--neu-accent); background: rgba(74,144,217,0.05); transform: translateY(-1px); }
.choice-btn.active { background: var(--neu-blue); color: #fff; border-color: var(--neu-blue); box-shadow: 0 2px 12px rgba(0,61,124,0.3); }
.tag-group { display: flex; flex-wrap: wrap; gap: 8px; }
.tag-btn { padding: 6px 16px; border: 1px solid var(--border); border-radius: 999px; background: var(--bg); cursor: pointer; font-size: 0.85rem; transition: all var(--transition); }
.tag-btn:hover { border-color: var(--neu-accent); transform: translateY(-1px); }
.tag-btn.active { background: rgba(0,61,124,0.1); color: var(--neu-blue); border-color: var(--neu-blue); font-weight: 600; }
.important-btn { font-size: 0.8rem; color: var(--text-muted); background: none; border: none; cursor: pointer; padding: 4px 8px; border-radius: 8px; transition: all var(--transition); }
.important-btn:hover { background: rgba(201,168,76,0.1); }
.important-btn.active { color: var(--neu-gold); font-weight: 600; }

/* Match */
.match-envelope { background: linear-gradient(135deg, #f8f4e8, #fff); border: 2px solid var(--neu-gold); border-radius: 24px; padding: 48px 40px; text-align: center; max-width: 500px; margin: 0 auto; box-shadow: 0 12px 40px rgba(201,168,76,0.15); animation: fadeSlideUp 0.6s ease-out; }
.match-score { font-family: var(--serif); font-size: 3.5rem; font-weight: 700; color: var(--neu-blue); }

/* Profile */
.avatar-picker { font-size: 3rem; cursor: pointer; width: 88px; height: 88px; display: flex; align-items: center; justify-content: center; border-radius: 50%; background: linear-gradient(135deg, rgba(0,61,124,0.06), rgba(74,144,217,0.1)); transition: all var(--transition); box-shadow: 0 4px 16px rgba(0,61,124,0.1); }
.avatar-picker:hover { transform: scale(1.15) rotate(10deg); }

/* Admin */
.admin-stat { background: linear-gradient(135deg, var(--neu-blue), var(--neu-blue-light)); color: #fff; border-radius: var(--radius); padding: 28px; text-align: center; transition: all var(--transition); box-shadow: 0 4px 20px rgba(0,61,124,0.2); }
.admin-stat:hover { transform: translateY(-4px); box-shadow: 0 8px 32px rgba(0,61,124,0.3); }
.admin-stat__num { font-family: var(--serif); font-size: 2.2rem; font-weight: 700; }
.admin-section { background: var(--bg-card); border-radius: var(--radius); padding: 28px; border: 1px solid var(--border); box-shadow: var(--shadow); margin-bottom: 24px; }
.admin-section h5 { font-family: var(--serif); margin-bottom: 20px; padding-bottom: 12px; border-bottom: 2px solid var(--border); }
.admin-actions { display: flex; gap: 12px; flex-wrap: wrap; padding: 20px; background: rgba(0,61,124,0.03); border-radius: 12px; }
.admin-table { font-size: 0.88rem; }
.admin-table thead th { background: rgba(0,61,124,0.04); font-weight: 600; font-size: 0.8rem; text-transform: uppercase; letter-spacing: 0.03em; color: var(--neu-blue); border-bottom: 2px solid var(--border); padding: 12px 8px; white-space: nowrap; }
.admin-table tbody td { padding: 10px 8px; vertical-align: middle; }
.admin-table tbody tr { transition: background var(--transition); }
.admin-table tbody tr:hover { background: rgba(0,61,124,0.03); }

/* Footer */
.site-footer { background: var(--bg-card); border-top: 1px solid var(--border); padding: 40px 20px; margin-top: 60px; }
.footer-links a { color: var(--text-muted); text-decoration: none; font-size: 0.9rem; transition: color var(--transition); }
.footer-links a:hover { color: var(--neu-blue); }

/* Flash & Toast */
.flash-container { position: fixed; top: 80px; right: 20px; z-index: 9999; max-width: 400px; }
.toast-container { position: fixed; bottom: 24px; right: 24px; z-index: 9999; }

/* Animations */
@keyframes fadeSlideDown { from { opacity: 0; transform: translateY(-24px); } to { opacity: 1; transform: translateY(0); } }
@keyframes fadeSlideUp { from { opacity: 0; transform: translateY(24px); } to { opacity: 1; transform: translateY(0); } }
@keyframes pulse { 0%, 100% { opacity: 1; transform: scale(1); } 50% { opacity: 0.6; transform: scale(1.3); } }
.reveal { opacity: 0; transform: translateY(30px); transition: opacity 0.7s ease, transform 0.7s ease; }
.reveal.visible { opacity: 1; transform: translateY(0); }
.reveal:nth-child(2) { transition-delay: 0.1s; }
.reveal:nth-child(3) { transition-delay: 0.2s; }
.reveal:nth-child(4) { transition-delay: 0.3s; }

/* CTA section */
.cta-section { position: relative; overflow: hidden; padding: 100px 0; }
.cta-section__bg { position: absolute; inset: 0; background-size: cover; background-position: center; background-attachment: fixed; }
.cta-section__overlay { position: absolute; inset: 0; background: linear-gradient(135deg, rgba(0,42,87,0.88), rgba(0,61,124,0.82)); }
.cta-section__content { position: relative; z-index: 1; }

/* Responsive */
@media (max-width: 768px) {
  .hero { padding: 100px 16px 80px; }
  .hero__title { font-size: 2rem; }
  .section { padding: 48px 0; }
  .auth-card { padding: 28px 20px; }
  .survey-section { padding: 20px 16px; }
  .match-envelope { padding: 28px 20px; }
  .countdown-timer { gap: 8px; }
  .cd-block { min-width: 56px; padding: 10px; }
  .cd-num { font-size: 1.4rem; }
  .dash-header { padding: 80px 0 40px; }
  .admin-section { padding: 16px; }
  .section-photo-bg__img { background-attachment: scroll; }
}

/* Scrollbar */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: rgba(0,61,124,0.2); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: rgba(0,61,124,0.4); }

/* Loading */

/* Hero Countdown */
.hero-countdown {
  margin-top: 40px;
  background: rgba(255,255,255,0.12);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid rgba(255,255,255,0.2);
  border-radius: 20px;
  padding: 20px 32px;
  display: inline-block;
  animation: fadeSlideDown 0.8s 0.75s ease-out both;
}
.hero-countdown__title {
  font-size: 0.85rem;
  color: rgba(255,255,255,0.7);
  margin-bottom: 10px;
  letter-spacing: 0.05em;
}
.hero-countdown__timer {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 4px;
}
.hero-cd-block {
  text-align: center;
  min-width: 52px;
}
.hero-cd-num {
  font-family: var(--serif);
  font-size: 2rem;
  font-weight: 700;
  color: #fff;
  line-height: 1;
  transition: transform 0.3s ease;
}
.hero-cd-num.tick {
  animation: cdTick 0.4s ease;
}
@keyframes cdTick {
  0% { transform: scale(1); }
  50% { transform: scale(1.25); }
  100% { transform: scale(1); }
}
.hero-cd-label {
  font-size: 0.65rem;
  color: rgba(255,255,255,0.55);
  margin-top: 4px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}
.hero-cd-sep {
  font-family: var(--serif);
  font-size: 1.5rem;
  font-weight: 700;
  color: rgba(255,255,255,0.4);
  padding: 0 2px;
  margin-top: -12px;
}
.hero-countdown__date {
  font-size: 0.78rem;
  color: rgba(255,255,255,0.5);
  margin-top: 10px;
  margin-bottom: 0;
}

@media (max-width: 768px) {
  .hero-countdown { padding: 16px 20px; }
  .hero-cd-num { font-size: 1.5rem; }
  .hero-cd-block { min-width: 40px; }
  .hero-cd-sep { font-size: 1.2rem; }
}