/* ============================================
   Table Tennis Tracker - Promo Website
   Theme extracted from Flutter app
   ============================================ */

@import url('https://fonts.googleapis.com/css2?family=Roboto:wght@300;400;500;700;900&display=swap');

:root {
  /* Extracted from app theme */
  --color-primary: #7AC943;
  --color-primary-dark: #56D364;
  --color-secondary: #123F6B;
  --color-tertiary: #4FC3FF;
  --color-bg: #0A1A2F;
  --color-bg-lighter: #0E3358;
  --color-surface: #1A568D;
  --color-surface-alt: #0D4E8A;
  --color-text-primary: #FFFFFF;
  --color-text-secondary: #B7CAE0;
  --color-text-muted: #7F9BB8;
  --color-outline: #2B6EA7;
  --color-error: #FF5A6A;
  --color-cta-start: #7AC943;
  --color-cta-end: #56D364;
  --color-header-start: #0D4E8A;
  --color-header-end: #123F6B;
  --border-radius: 16px;
  --border-radius-sm: 12px;
  --font-family: 'Roboto', sans-serif;
}

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-family);
  background-color: var(--color-bg);
  color: var(--color-text-primary);
  line-height: 1.6;
  min-height: 100vh;
  overflow-x: hidden;
}

a {
  color: var(--color-tertiary);
  text-decoration: none;
  transition: color 0.2s ease;
}

a:hover {
  color: var(--color-primary);
}

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

/* ============================================
   Navigation
   ============================================ */

.site-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(10, 26, 47, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(43, 110, 167, 0.3);
  padding: 0 24px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 18px;
  color: var(--color-text-primary);
  white-space: nowrap;
}

.nav-brand .brand-icon {
  font-size: 24px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
  list-style: none;
}

.nav-links a {
  color: var(--color-text-secondary);
  font-weight: 500;
  font-size: 15px;
  transition: color 0.2s ease;
  white-space: nowrap;
}

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

.nav-hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 4px;
  background: none;
  border: none;
}

.nav-hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-text-secondary);
  transition: transform 0.3s ease, opacity 0.3s ease;
}

@media (max-width: 768px) {
  .nav-hamburger {
    display: flex;
  }

  .nav-links {
    display: none;
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    background: rgba(10, 26, 47, 0.98);
    flex-direction: column;
    padding: 20px 24px;
    gap: 20px;
    border-bottom: 1px solid rgba(43, 110, 167, 0.3);
  }

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

/* ============================================
   Hero Section
   ============================================ */

.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 100px 24px 60px;
  background: linear-gradient(160deg, var(--color-bg) 0%, var(--color-bg-lighter) 50%, var(--color-secondary) 100%);
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -30%;
  width: 80%;
  height: 140%;
  background: radial-gradient(ellipse, rgba(122, 201, 67, 0.06) 0%, transparent 70%);
  pointer-events: none;
}

.hero-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: 60px;
  width: 100%;
}

.hero-content {
  flex: 1;
  min-width: 0;
}

.hero-content h1 {
  font-size: 48px;
  font-weight: 900;
  line-height: 1.15;
  margin-bottom: 20px;
}

.hero-content h1 .text-gradient {
  background: linear-gradient(135deg, var(--color-cta-start), var(--color-tertiary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-content p {
  font-size: 18px;
  color: var(--color-text-secondary);
  margin-bottom: 32px;
  max-width: 480px;
  line-height: 1.7;
}

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

.hero-device {
  flex: 0 0 auto;
  position: relative;
}

.device-mockup {
  position: relative;
  width: 280px;
  max-width: 100%;
}

.device-mockup::before {
  content: '';
  position: absolute;
  inset: -16px;
  background: linear-gradient(145deg, var(--color-surface), var(--color-bg-lighter));
  border-radius: 36px;
  border: 2px solid var(--color-outline);
  z-index: 0;
}

.device-mockup::after {
  content: '';
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  width: 80px;
  height: 6px;
  background: var(--color-outline);
  border-radius: 3px;
  z-index: 2;
}

.device-mockup img {
  position: relative;
  z-index: 1;
  border-radius: 24px;
  width: 100%;
  display: block;
}

.device-glow {
  position: absolute;
  width: 350px;
  height: 350px;
  background: radial-gradient(circle, rgba(122, 201, 67, 0.15) 0%, transparent 70%);
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  pointer-events: none;
  z-index: -1;
}

@media (max-width: 900px) {
  .hero-inner {
    flex-direction: column;
    text-align: center;
  }

  .hero-content h1 {
    font-size: 36px;
  }

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

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

  .device-mockup {
    width: 220px;
  }
}

@media (max-width: 480px) {
  .hero-content h1 {
    font-size: 28px;
  }

  .hero-content p {
    font-size: 16px;
  }

  .device-mockup {
    width: 180px;
  }
}

/* ============================================
   Buttons
   ============================================ */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 14px 28px;
  border-radius: var(--border-radius);
  font-family: var(--font-family);
  font-weight: 700;
  font-size: 16px;
  cursor: pointer;
  transition: all 0.25s ease;
  border: none;
  text-align: center;
  line-height: 1.2;
}

.btn-primary {
  background: linear-gradient(135deg, var(--color-cta-start), var(--color-cta-end));
  color: var(--color-bg);
  box-shadow: 0 4px 20px rgba(122, 201, 67, 0.3);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(122, 201, 67, 0.45);
  color: var(--color-bg);
}

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

.btn-secondary:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
  transform: translateY(-2px);
}

.btn-icon {
  font-size: 20px;
}

/* ============================================
   Section Base
   ============================================ */

.section {
  padding: 80px 24px;
  position: relative;
}

.section-dark {
  background: var(--color-bg);
}

.section-alt {
  background: linear-gradient(180deg, var(--color-bg-lighter) 0%, var(--color-bg) 100%);
}

.section-surface {
  background: var(--color-bg-lighter);
}

.container {
  max-width: 1100px;
  margin: 0 auto;
  width: 100%;
}

.section-header {
  text-align: center;
  margin-bottom: 48px;
}

.section-header h2 {
  font-size: 36px;
  font-weight: 900;
  margin-bottom: 12px;
}

.section-header p {
  font-size: 17px;
  color: var(--color-text-secondary);
  max-width: 560px;
  margin: 0 auto;
}

@media (max-width: 768px) {
  .section {
    padding: 56px 20px;
  }

  .section-header h2 {
    font-size: 28px;
  }

  .section-header p {
    font-size: 15px;
  }
}

/* ============================================
   Features Section
   ============================================ */

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

.feature-card {
  background: linear-gradient(145deg, var(--color-surface), var(--color-bg-lighter));
  border: 1px solid rgba(43, 110, 167, 0.3);
  border-radius: var(--border-radius);
  padding: 32px 24px;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  text-align: left;
}

.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.3);
}

.feature-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--border-radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  margin-bottom: 16px;
  background: rgba(122, 201, 67, 0.15);
}

.feature-card h3 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 8px;
}

.feature-card p {
  font-size: 14px;
  color: var(--color-text-secondary);
  line-height: 1.6;
}

@media (max-width: 900px) {
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 580px) {
  .features-grid {
    grid-template-columns: 1fr;
  }
}

/* ============================================
   Screenshots Carousel
   ============================================ */

.screenshots-section {
  padding: 80px 24px;
  overflow: hidden;
}

.carousel-wrapper {
  max-width: 900px;
  margin: 0 auto;
  position: relative;
}

.carousel-track {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 400px;
  position: relative;
}

.carousel-slide {
  display: none;
  justify-content: center;
  align-items: center;
  height: 100%;
}

.carousel-slide.active {
  display: flex;
}

.carousel-device {
  position: relative;
  width: 200px;
  flex-shrink: 0;
}

.carousel-device::before {
  content: '';
  position: absolute;
  inset: -12px;
  background: linear-gradient(145deg, var(--color-surface), var(--color-bg-lighter));
  border-radius: 28px;
  border: 2px solid var(--color-outline);
}

.carousel-device::after {
  content: '';
  position: absolute;
  top: -8px;
  left: 50%;
  transform: translateX(-50%);
  width: 56px;
  height: 5px;
  background: var(--color-outline);
  border-radius: 3px;
  z-index: 2;
}

.carousel-device img {
  position: relative;
  z-index: 1;
  border-radius: 18px;
  width: 100%;
  height: auto;
  max-height: 370px;
  object-fit: cover;
  object-position: top;
  cursor: pointer;
  filter: blur(5px);
  transition: filter 0.4s ease;
}

.carousel-device img.loaded {
  filter: blur(0);
}

.carousel-nav {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  margin-top: 24px;
}

.carousel-btn {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--color-surface);
  border: 1px solid var(--color-outline);
  color: var(--color-text-primary);
  font-size: 18px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s ease;
}

.carousel-btn:hover {
  background: var(--color-primary);
  color: var(--color-bg);
  border-color: var(--color-primary);
}

.carousel-dots {
  display: flex;
  gap: 8px;
}

.carousel-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--color-outline);
  border: none;
  cursor: pointer;
  transition: all 0.2s ease;
  padding: 0;
}

.carousel-dot.active {
  background: var(--color-primary);
  box-shadow: 0 0 10px rgba(122, 201, 67, 0.5);
}

@media (max-width: 768px) {
  .carousel-track {
    height: 300px;
  }

  .carousel-device {
    width: 160px;
  }

  .carousel-device img {
    max-height: 280px;
  }
}

@media (max-width: 480px) {
  .carousel-track {
    height: 260px;
  }

  .carousel-device {
    width: 140px;
  }

  .carousel-device img {
    max-height: 240px;
  }
}

/* ============================================
   Lightbox
   ============================================ */

.lightbox {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 9999;
  background: rgba(0, 0, 0, 0.92);
  align-items: center;
  justify-content: center;
  padding: 40px;
  cursor: pointer;
}

.lightbox.open {
  display: flex;
}

.lightbox img {
  max-width: 90vw;
  max-height: 90vh;
  border-radius: 12px;
  box-shadow: 0 0 60px rgba(0, 0, 0, 0.5);
}

.lightbox-close {
  position: absolute;
  top: 20px;
  right: 24px;
  font-size: 32px;
  color: white;
  background: none;
  border: none;
  cursor: pointer;
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* ============================================
   Stats Section
   ============================================ */

.stats-row {
  display: flex;
  justify-content: center;
  gap: 48px;
  flex-wrap: wrap;
}

.stat-item {
  text-align: center;
}

.stat-value {
  font-size: 42px;
  font-weight: 900;
  color: var(--color-primary);
  line-height: 1.1;
}

.stat-label {
  font-size: 14px;
  color: var(--color-text-muted);
  margin-top: 4px;
  text-transform: uppercase;
  letter-spacing: 1px;
}

/* ============================================
   CTA Section
   ============================================ */

.cta-section {
  text-align: center;
  padding: 80px 24px;
  background: linear-gradient(180deg, var(--color-bg) 0%, var(--color-bg-lighter) 100%);
}

.cta-section h2 {
  font-size: 36px;
  font-weight: 900;
  margin-bottom: 16px;
}

.cta-section p {
  font-size: 17px;
  color: var(--color-text-secondary);
  margin-bottom: 32px;
  max-width: 500px;
  margin-left: auto;
  margin-right: auto;
}

.cta-buttons {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

/* ============================================
   Footer
   ============================================ */

.site-footer {
  background: var(--color-bg);
  border-top: 1px solid rgba(43, 110, 167, 0.2);
  padding: 40px 24px;
}

.footer-inner {
  max-width: 1100px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
}

.footer-copy {
  font-size: 14px;
  color: var(--color-text-muted);
}

.footer-links {
  display: flex;
  gap: 24px;
  list-style: none;
}

.footer-links a {
  font-size: 14px;
  color: var(--color-text-muted);
}

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

@media (max-width: 580px) {
  .footer-inner {
    flex-direction: column;
    text-align: center;
  }
}

/* ============================================
   Content Pages (Privacy, Terms, Contact)
   ============================================ */

.page-header {
  padding: 120px 24px 48px;
  background: linear-gradient(160deg, var(--color-bg) 0%, var(--color-bg-lighter) 100%);
  text-align: center;
}

.page-header h1 {
  font-size: 40px;
  font-weight: 900;
}

.page-header p {
  color: var(--color-text-secondary);
  margin-top: 8px;
  font-size: 16px;
}

.content-wrap {
  max-width: 800px;
  margin: 0 auto;
  padding: 48px 24px 80px;
}

.content-wrap h2 {
  font-size: 24px;
  font-weight: 700;
  margin-top: 40px;
  margin-bottom: 16px;
  color: var(--color-primary);
}

.content-wrap h3 {
  font-size: 18px;
  font-weight: 700;
  margin-top: 28px;
  margin-bottom: 12px;
}

.content-wrap p {
  font-size: 15px;
  color: var(--color-text-secondary);
  line-height: 1.75;
  margin-bottom: 16px;
  text-align: left;
}

.content-wrap ul, .content-wrap ol {
  padding-left: 24px;
  margin-bottom: 16px;
}

.content-wrap li {
  font-size: 15px;
  color: var(--color-text-secondary);
  line-height: 1.75;
  margin-bottom: 8px;
}

.content-wrap a {
  color: var(--color-tertiary);
}

.content-wrap a:hover {
  text-decoration: underline;
}

/* ============================================
   Contact Form
   ============================================ */

.contact-card {
  background: linear-gradient(145deg, var(--color-surface), var(--color-bg-lighter));
  border: 1px solid rgba(43, 110, 167, 0.3);
  border-radius: var(--border-radius);
  padding: 40px;
  max-width: 600px;
  margin: 0 auto;
}

.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  font-size: 14px;
  font-weight: 500;
  color: var(--color-text-secondary);
  margin-bottom: 6px;
}

.form-control {
  width: 100%;
  padding: 14px 16px;
  background: var(--color-bg-lighter);
  border: 1px solid var(--color-outline);
  border-radius: var(--border-radius-sm);
  color: var(--color-text-primary);
  font-family: var(--font-family);
  font-size: 15px;
  transition: border-color 0.2s ease;
}

.form-control:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(122, 201, 67, 0.15);
}

textarea.form-control {
  min-height: 140px;
  resize: vertical;
}

.form-control::placeholder {
  color: var(--color-text-muted);
}

.form-file {
  position: relative;
}

.form-file input[type="file"] {
  width: 100%;
  padding: 12px 16px;
  background: var(--color-bg-lighter);
  border: 1px dashed var(--color-outline);
  border-radius: var(--border-radius-sm);
  color: var(--color-text-muted);
  font-family: var(--font-family);
  font-size: 14px;
  cursor: pointer;
}

.form-file input[type="file"]::file-selector-button {
  background: var(--color-surface);
  border: 1px solid var(--color-outline);
  color: var(--color-text-primary);
  padding: 6px 16px;
  border-radius: 8px;
  font-family: var(--font-family);
  font-size: 14px;
  cursor: pointer;
  margin-right: 12px;
  transition: all 0.2s ease;
}

.form-file input[type="file"]::file-selector-button:hover {
  background: var(--color-primary);
  color: var(--color-bg);
  border-color: var(--color-primary);
}

.form-submit {
  margin-top: 8px;
}

.form-submit .btn {
  width: 100%;
}

.form-success {
  display: none;
  text-align: center;
  padding: 40px 20px;
}

.form-success .check-icon {
  font-size: 48px;
  margin-bottom: 16px;
}

.form-success h3 {
  font-size: 22px;
  margin-bottom: 8px;
}

.form-success p {
  color: var(--color-text-secondary);
}

/* ============================================
   Privacy Accept Button (shared include)
   ============================================ */

.privacy-accept-btn {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 9990;
  padding: 16px 24px 24px;
  background: linear-gradient(to top, var(--color-bg) 60%, transparent);
  display: flex;
  align-items: center;
  justify-content: center;
}

.privacy-accept-btn.hidden {
  display: none;
}

.accept-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 16px 48px;
  background: linear-gradient(135deg, var(--color-cta-start), var(--color-cta-end));
  color: var(--color-bg);
  border: none;
  border-radius: var(--border-radius);
  font-family: var(--font-family);
  font-weight: 700;
  font-size: 16px;
  cursor: pointer;
  box-shadow: 0 4px 20px rgba(122, 201, 67, 0.4);
  transition: all 0.25s ease;
  max-width: 400px;
  width: 100%;
  text-align: center;
}

.accept-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(122, 201, 67, 0.55);
}

/* ============================================
   Scroll animations
   ============================================ */

.fade-in {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}