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

:root {
  --bg-color: #0a0a0a;
  --text-color: #ffffff;
  --text-muted: #888888;
  --accent-color: rgba(225, 27, 34, 1);
  --border-color: #333333;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'SF Pro Display', 'Segoe UI', Roboto, sans-serif;
  background-color: var(--bg-color);
  color: var(--text-color);
  min-height: 100vh;
  line-height: 1.6;
}

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

/* Header */
.header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 40px;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: var(--bg-color);
}

.header-left {
  display: flex;
  align-items: center;
  gap: 40px;
}

.logo img {
  height: 40px;
}

.nav {
  display: flex;
  gap: 30px;
}

.nav a {
  color: var(--text-color);
  font-size: 15px;
  font-weight: 400;
  transition: opacity 0.3s;
}

.nav a:hover {
  opacity: 0.7;
}

.btn-download {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--accent-color);
  color: white;
  padding: 12px 24px;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 500;
  transition: background 0.3s;
}

.btn-download:hover {
  background: rgba(200, 20, 28, 1);
}

.btn-download img {
  width: 16px;
  height: 16px;
}

/* Mobile menu */
.mobile-menu-btn {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 10px;
}

.mobile-menu-btn span {
  display: block;
  width: 24px;
  height: 2px;
  background: white;
  margin: 5px 0;
  transition: 0.3s;
}

/* Hero Section */
.hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-start;
  text-align: center;
  padding: 140px 20px 60px;
  position: relative;
  overflow: hidden;
}

.hero-content {
  max-width: 700px;
  z-index: 2;
  position: relative;
}

.hero h1 {
  font-size: 48px;
  font-weight: 600;
  line-height: 1.2;
  margin-bottom: 24px;
}

.hero p {
  font-size: 16px;
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: 32px;
  max-width: 550px;
  margin-left: auto;
  margin-right: auto;
}

.hero .btn-download {
  margin: 0 auto;
}

.hero-image {
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 100%;
  max-width: 1400px;
  z-index: 1;
  pointer-events: none;
}

.hero-image img {
  width: 100%;
  height: auto;
}

/* Page Content */
.page-content {
  padding: 140px 40px 60px;
  max-width: 800px;
}

.page-content h1 {
  font-size: 48px;
  font-weight: 700;
  margin-bottom: 60px;
}

/* Support Form */
.support-form {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.form-row {
  display: flex;
}

.form-row input {
  flex: 1;
  background: transparent;
  border: none;
  border-bottom: 1px solid var(--border-color);
  padding: 20px 0;
  color: var(--text-color);
  font-size: 16px;
  outline: none;
}

.form-row input:first-child {
  padding-right: 20px;
  margin-right: 20px;
}

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

.form-textarea textarea {
  width: 100%;
  background: transparent;
  border: none;
  border-bottom: 1px solid var(--border-color);
  padding: 20px 0;
  color: var(--text-color);
  font-size: 16px;
  outline: none;
  resize: vertical;
  min-height: 150px;
  font-family: inherit;
}

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

.form-footer {
  display: flex;
  align-items: center;
  gap: 30px;
  margin-top: 40px;
}

.btn-submit {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--accent-color);
  color: white;
  padding: 16px 28px;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 500;
  border: none;
  cursor: pointer;
  transition: background 0.3s;
}

.btn-submit:hover {
  background: rgba(200, 20, 28, 1);
}

.form-note {
  color: var(--text-muted);
  font-size: 14px;
  line-height: 1.5;
}

.form-note a {
  color: var(--text-muted);
  text-decoration: underline;
}

.form-note a:hover {
  color: var(--text-color);
}

/* Privacy Policy */
.policy-content h2 {
  font-size: 24px;
  font-weight: 600;
  margin-top: 40px;
  margin-bottom: 16px;
}

.policy-content p {
  color: var(--text-muted);
  margin-bottom: 16px;
  line-height: 1.7;
}

.policy-content ul {
  color: var(--text-muted);
  margin-bottom: 16px;
  padding-left: 20px;
}

.policy-content li {
  margin-bottom: 8px;
}

.policy-content a {
  color: var(--text-color);
  text-decoration: underline;
}

/* Responsive */
@media (max-width: 900px) {
  .header {
    padding: 15px 20px;
  }

  .nav {
    display: none;
  }

  .mobile-menu-btn {
    display: block;
  }

  .header-left {
    gap: 20px;
  }

  .btn-download.desktop {
    display: none;
  }

  .hero {
    padding: 120px 20px 40px;
    min-height: auto;
  }

  .hero h1 {
    font-size: 28px;
    margin-bottom: 16px;
  }

  .hero p {
    font-size: 14px;
    margin-bottom: 24px;
  }

  .hero-content {
    padding-bottom: 20px;
  }

  .hero-image {
    position: relative;
    bottom: auto;
    left: auto;
    transform: none;
    margin-top: 30px;
  }

  .page-content {
    padding: 100px 20px 40px;
  }

  .page-content h1 {
    font-size: 28px;
    margin-bottom: 40px;
  }

  .form-row {
    flex-direction: column;
  }

  .form-row input:first-child {
    padding-right: 0;
    margin-right: 0;
  }

  .form-footer {
    flex-direction: column;
    align-items: flex-start;
    gap: 20px;
  }

  .policy-content h2 {
    font-size: 20px;
  }
}

/* Mobile Nav Overlay */
.mobile-nav {
  display: none;
  position: fixed;
  top: 70px;
  left: 0;
  right: 0;
  background: var(--bg-color);
  padding: 20px;
  border-top: 1px solid var(--border-color);
  z-index: 99;
}

.mobile-nav.active {
  display: block;
}

.mobile-nav a {
  display: block;
  padding: 15px 0;
  border-bottom: 1px solid var(--border-color);
  font-size: 16px;
}

.mobile-nav .btn-download {
  margin-top: 20px;
  justify-content: center;
  width: 100%;
}