/* ===== Quick Date Landing — style.css ===== */

/* ---------- Reset & Base ---------- */
*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --bg-dark: #0f0f1a;
  --bg-card: #1a1a2e;
  --bg-card-hover: #222240;
  --accent: #ff4757;
  --accent-light: #ff6b81;
  --gradient-start: #ff6b6b;
  --gradient-mid: #ff8e53;
  --gradient-end: #ffa07a;
  --text-primary: #f0f0f0;
  --text-secondary: #a0a0b8;
  --text-muted: #6c6c80;
  --radius: 16px;
  --radius-sm: 10px;
  --shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
  --shadow-glow: 0 0 40px rgba(255, 71, 87, 0.15);
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --max-width: 1200px;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font);
  background: var(--bg-dark);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

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

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

/* ---------- Utility ---------- */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

.section {
  padding: 100px 0;
}

.section-title {
  font-size: 2.5rem;
  font-weight: 800;
  text-align: center;
  margin-bottom: 16px;
  letter-spacing: -0.02em;
}

.section-subtitle {
  text-align: center;
  color: var(--text-secondary);
  font-size: 1.15rem;
  max-width: 600px;
  margin: 0 auto 60px;
}

.gradient-text {
  background: linear-gradient(135deg, var(--gradient-start), var(--gradient-mid), var(--gradient-end));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 16px 36px;
  border-radius: 50px;
  font-size: 1.05rem;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: var(--transition);
  font-family: var(--font);
}

.btn-primary {
  background: linear-gradient(135deg, var(--gradient-start), var(--accent));
  color: #fff;
  box-shadow: 0 4px 20px rgba(255, 71, 87, 0.35);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(255, 71, 87, 0.5);
}

.btn-outline {
  background: transparent;
  color: var(--text-primary);
  border: 2px solid rgba(255, 255, 255, 0.15);
}

.btn-outline:hover {
  border-color: var(--accent);
  color: var(--accent-light);
}

.btn-sm {
  padding: 10px 22px;
  font-size: 0.9rem;
}

/* ---------- Header ---------- */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 16px 0;
  transition: var(--transition);
}

.header.scrolled {
  background: rgba(15, 15, 26, 0.92);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  padding: 12px 0;
}

.header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.5rem;
  font-weight: 800;
  letter-spacing: -0.02em;
}

.logo-icon {
  font-size: 1.6rem;
}

.nav {
  display: flex;
  align-items: center;
  gap: 32px;
}

.nav-links {
  display: flex;
  list-style: none;
  gap: 28px;
}

.nav-links a {
  color: var(--text-secondary);
  font-size: 0.95rem;
  font-weight: 500;
  transition: var(--transition);
  position: relative;
}

.nav-links a:hover {
  color: var(--text-primary);
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--accent);
  transition: var(--transition);
}

.nav-links a:hover::after {
  width: 100%;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 16px;
}

/* Language toggle */
.lang-toggle {
  display: flex;
  background: rgba(255, 255, 255, 0.06);
  border-radius: 50px;
  padding: 3px;
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.lang-btn {
  padding: 6px 14px;
  border-radius: 50px;
  border: none;
  background: transparent;
  color: var(--text-muted);
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  font-family: var(--font);
}

.lang-btn.active {
  background: var(--accent);
  color: #fff;
}

/* Burger menu */
.burger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.burger span {
  width: 24px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: var(--transition);
}

.burger.open span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.burger.open span:nth-child(2) {
  opacity: 0;
}

.burger.open span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* ---------- Hero ---------- */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  padding-top: 80px;
}

.hero::before {
  content: '';
  position: absolute;
  top: -40%;
  right: -20%;
  width: 800px;
  height: 800px;
  background: radial-gradient(circle, rgba(255, 71, 87, 0.12) 0%, transparent 70%);
  pointer-events: none;
}

.hero::after {
  content: '';
  position: absolute;
  bottom: -30%;
  left: -15%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(255, 142, 83, 0.08) 0%, transparent 70%);
  pointer-events: none;
}

.hero .container {
  display: flex;
  align-items: center;
  gap: 60px;
  position: relative;
  z-index: 1;
}

.hero-content {
  flex: 1;
  max-width: 600px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255, 71, 87, 0.1);
  border: 1px solid rgba(255, 71, 87, 0.2);
  color: var(--accent-light);
  padding: 8px 18px;
  border-radius: 50px;
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 24px;
}

.hero-title {
  font-size: 3.8rem;
  font-weight: 900;
  line-height: 1.1;
  letter-spacing: -0.03em;
  margin-bottom: 24px;
}

.hero-subtitle {
  font-size: 1.2rem;
  color: var(--text-secondary);
  margin-bottom: 40px;
  max-width: 480px;
  line-height: 1.7;
}

.hero-buttons {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.hero-stats {
  display: flex;
  gap: 40px;
  margin-top: 56px;
  padding-top: 32px;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
}

.hero-stat {
  text-align: left;
}

.hero-stat-value {
  font-size: 1.8rem;
  font-weight: 800;
  background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-stat-label {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-top: 4px;
}

/* Hero visual */
.hero-visual {
  flex: 1;
  display: flex;
  justify-content: center;
  align-items: center;
}

.phone-mockup {
  width: 300px;
  height: 600px;
  background: var(--bg-card);
  border-radius: 40px;
  border: 3px solid rgba(255, 255, 255, 0.08);
  padding: 16px;
  position: relative;
  box-shadow: var(--shadow), var(--shadow-glow);
}

.phone-screen {
  width: 100%;
  height: 100%;
  background: linear-gradient(180deg, #16213e 0%, #0f0f1a 100%);
  border-radius: 28px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.phone-header {
  padding: 20px 16px 12px;
  text-align: center;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.phone-header-title {
  font-size: 1rem;
  font-weight: 700;
}

.phone-body {
  flex: 1;
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.mock-card {
  background: rgba(255, 255, 255, 0.04);
  border-radius: 12px;
  padding: 14px;
  border: 1px solid rgba(255, 255, 255, 0.06);
}

.mock-card-header {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 8px;
}

.mock-avatar {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--gradient-start), var(--gradient-mid));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.8rem;
}

.mock-name {
  font-size: 0.85rem;
  font-weight: 600;
}

.mock-time {
  font-size: 0.7rem;
  color: var(--text-muted);
}

.mock-text {
  font-size: 0.8rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

.mock-actions {
  display: flex;
  gap: 8px;
  margin-top: 10px;
}

.mock-btn {
  flex: 1;
  padding: 8px;
  border-radius: 8px;
  border: none;
  font-size: 0.75rem;
  font-weight: 600;
  cursor: default;
  text-align: center;
}

.mock-btn-like {
  background: rgba(255, 71, 87, 0.15);
  color: var(--accent-light);
}

.mock-btn-skip {
  background: rgba(255, 255, 255, 0.06);
  color: var(--text-muted);
}

/* Floating elements */
.floating {
  position: absolute;
  animation: float 6s ease-in-out infinite;
}

.floating-heart {
  top: 10%;
  right: 5%;
  font-size: 2rem;
  animation-delay: 0s;
}

.floating-fire {
  bottom: 20%;
  right: 15%;
  font-size: 1.6rem;
  animation-delay: 2s;
}

.floating-chat {
  top: 30%;
  left: 5%;
  font-size: 1.4rem;
  animation-delay: 4s;
}

@keyframes float {
  0%, 100% { transform: translateY(0) rotate(0deg); }
  33% { transform: translateY(-12px) rotate(5deg); }
  66% { transform: translateY(8px) rotate(-3deg); }
}

/* ---------- Features ---------- */
.features {
  background: linear-gradient(180deg, var(--bg-dark) 0%, rgba(26, 26, 46, 0.5) 50%, var(--bg-dark) 100%);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.feature-card {
  background: var(--bg-card);
  border: 1px solid rgba(255, 255, 255, 0.05);
  border-radius: var(--radius);
  padding: 36px 28px;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--gradient-start), var(--gradient-end));
  opacity: 0;
  transition: var(--transition);
}

.feature-card:hover {
  transform: translateY(-4px);
  border-color: rgba(255, 71, 87, 0.15);
  box-shadow: var(--shadow);
}

.feature-card:hover::before {
  opacity: 1;
}

.feature-icon {
  width: 56px;
  height: 56px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.6rem;
  margin-bottom: 20px;
}

.feature-icon-fire {
  background: rgba(255, 107, 107, 0.12);
}

.feature-icon-heart {
  background: rgba(255, 71, 87, 0.12);
}

.feature-icon-chat {
  background: rgba(100, 149, 237, 0.12);
}

.feature-icon-shield {
  background: rgba(46, 213, 115, 0.12);
}

.feature-title {
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 10px;
}

.feature-desc {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ---------- How it Works ---------- */
.how-it-works {
  position: relative;
}

.steps {
  display: flex;
  gap: 32px;
  position: relative;
}

.steps::before {
  content: '';
  position: absolute;
  top: 48px;
  left: 15%;
  right: 15%;
  height: 2px;
  background: linear-gradient(90deg, var(--gradient-start), var(--gradient-mid), var(--gradient-end));
  opacity: 0.3;
}

.step {
  flex: 1;
  text-align: center;
  position: relative;
  z-index: 1;
}

.step-number {
  width: 96px;
  height: 96px;
  border-radius: 50%;
  background: var(--bg-card);
  border: 2px solid rgba(255, 71, 87, 0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 24px;
  font-size: 2.2rem;
  transition: var(--transition);
}

.step:hover .step-number {
  border-color: var(--accent);
  box-shadow: var(--shadow-glow);
  transform: scale(1.05);
}

.step-title {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 10px;
}

.step-desc {
  font-size: 0.95rem;
  color: var(--text-secondary);
  max-width: 260px;
  margin: 0 auto;
  line-height: 1.6;
}

/* ---------- Safety ---------- */
.safety {
  background: linear-gradient(180deg, var(--bg-dark) 0%, rgba(26, 26, 46, 0.5) 50%, var(--bg-dark) 100%);
}

.safety-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.safety-card {
  background: var(--bg-card);
  border: 1px solid rgba(255, 255, 255, 0.05);
  border-radius: var(--radius);
  padding: 36px 28px;
  text-align: center;
  transition: var(--transition);
}

.safety-card:hover {
  transform: translateY(-4px);
  border-color: rgba(46, 213, 115, 0.2);
  box-shadow: var(--shadow);
}

.safety-icon {
  font-size: 2.8rem;
  margin-bottom: 20px;
}

.safety-title {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 10px;
}

.safety-desc {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ---------- CTA ---------- */
.cta {
  text-align: center;
  position: relative;
  overflow: hidden;
}

.cta::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(255, 71, 87, 0.1) 0%, transparent 70%);
  pointer-events: none;
}

.cta-box {
  background: var(--bg-card);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: 24px;
  padding: 80px 40px;
  position: relative;
  z-index: 1;
}

.cta-title {
  font-size: 2.5rem;
  font-weight: 800;
  margin-bottom: 16px;
  letter-spacing: -0.02em;
}

.cta-subtitle {
  font-size: 1.15rem;
  color: var(--text-secondary);
  margin-bottom: 40px;
  max-width: 500px;
  margin-left: auto;
  margin-right: auto;
}

/* ---------- Footer ---------- */
.footer {
  padding: 40px 0;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.footer .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.footer-copy {
  color: var(--text-muted);
  font-size: 0.9rem;
}

.footer-link {
  color: var(--text-secondary);
  font-size: 0.9rem;
  transition: var(--transition);
}

.footer-link:hover {
  color: var(--accent-light);
}

/* ---------- Animations (scroll reveal) ---------- */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ---------- Mobile Nav Overlay ---------- */
.mobile-nav {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(15, 15, 26, 0.97);
  backdrop-filter: blur(20px);
  z-index: 999;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 32px;
}

.mobile-nav.open {
  display: flex;
}

.mobile-nav a {
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--text-primary);
  transition: var(--transition);
}

.mobile-nav a:hover {
  color: var(--accent-light);
}

/* ---------- Responsive ---------- */
@media (max-width: 1024px) {
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .hero-title {
    font-size: 3rem;
  }

  .hero .container {
    flex-direction: column;
    text-align: center;
  }

  .hero-content {
    max-width: 100%;
  }

  .hero-subtitle {
    margin-left: auto;
    margin-right: auto;
  }

  .hero-buttons {
    justify-content: center;
  }

  .hero-stats {
    justify-content: center;
  }

  .steps {
    flex-direction: column;
    gap: 40px;
  }

  .steps::before {
    display: none;
  }
}

@media (max-width: 768px) {
  .section {
    padding: 60px 0;
  }

  .section-title {
    font-size: 2rem;
  }

  .nav-links {
    display: none;
  }

  .nav .btn {
    display: none;
  }

  .burger {
    display: flex;
  }

  .hero {
    min-height: auto;
    padding-top: 120px;
    padding-bottom: 60px;
  }

  .hero-title {
    font-size: 2.4rem;
  }

  .hero-visual {
    display: none;
  }

  .features-grid {
    grid-template-columns: 1fr;
  }

  .safety-grid {
    grid-template-columns: 1fr;
  }

  .hero-stats {
    flex-direction: column;
    gap: 20px;
    align-items: center;
  }

  .cta-box {
    padding: 48px 24px;
  }

  .cta-title {
    font-size: 1.8rem;
  }

  .footer .container {
    flex-direction: column;
    gap: 16px;
    text-align: center;
  }

  .phone-mockup {
    width: 240px;
    height: 480px;
  }
}

@media (max-width: 480px) {
  .hero-title {
    font-size: 2rem;
  }

  .hero-buttons {
    flex-direction: column;
    align-items: center;
  }

  .btn {
    width: 100%;
    justify-content: center;
  }
}