@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@300;400;500;600;700;800;900&display=swap');

:root {
  --bg: #090d16;
  --bg-secondary: #0f172a;
  --card-bg: rgba(15, 23, 42, 0.75);
  --card-border: rgba(255, 255, 255, 0.08);
  --accent: #00f2fe;
  --accent-gradient: linear-gradient(135deg, #00f2fe 0%, #4facfe 100%);
  --primary-gradient: linear-gradient(135deg, #3b82f6 0%, #1d4ed8 100%);
  --protein: #10b981;
  --carbs: #f59e0b;
  --fat: #ef4444;
  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --text-dim: #64748b;
  --radius: 20px;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, sans-serif;
}

body {
  background-color: var(--bg);
  color: var(--text-main);
  line-height: 1.6;
  overflow-x: hidden;
  background-image: 
    radial-gradient(at 0% 0%, rgba(0, 242, 254, 0.08) 0px, transparent 50%),
    radial-gradient(at 100% 100%, rgba(79, 172, 254, 0.08) 0px, transparent 50%);
  background-attachment: fixed;
}

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

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* Header & Nav */
header {
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  background: rgba(9, 13, 22, 0.85);
  border-bottom: 1px solid var(--card-border);
}

.nav-wrapper {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 80px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 24px;
  font-weight: 900;
  letter-spacing: -0.5px;
}

.brand-icon {
  width: 40px;
  height: 40px;
  background: var(--accent-gradient);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #000;
  font-weight: 900;
  font-size: 20px;
  box-shadow: 0 0 20px rgba(0, 242, 254, 0.4);
}

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

.nav-links a {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-muted);
  transition: color 0.2s;
}

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

.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 24px;
  background: var(--accent-gradient);
  color: #090d16;
  font-weight: 800;
  font-size: 14px;
  border-radius: 12px;
  transition: transform 0.2s, box-shadow 0.2s;
  box-shadow: 0 4px 20px rgba(0, 242, 254, 0.3);
  border: none;
  cursor: pointer;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 25px rgba(0, 242, 254, 0.45);
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 24px;
  background: rgba(255, 255, 255, 0.06);
  color: #fff;
  font-weight: 700;
  font-size: 14px;
  border-radius: 12px;
  border: 1px solid var(--card-border);
  transition: all 0.2s;
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.12);
  border-color: rgba(255, 255, 255, 0.2);
}

/* Hero Section */
.hero {
  padding: 100px 0 80px;
  text-align: center;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  background: rgba(0, 242, 254, 0.1);
  border: 1px solid rgba(0, 242, 254, 0.3);
  border-radius: 30px;
  font-size: 12px;
  font-weight: 800;
  color: var(--accent);
  letter-spacing: 1px;
  margin-bottom: 24px;
  text-transform: uppercase;
}

.hero h1 {
  font-size: 56px;
  font-weight: 900;
  line-height: 1.15;
  letter-spacing: -1.5px;
  margin-bottom: 20px;
  background: linear-gradient(180deg, #ffffff 0%, #94a3b8 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero p {
  font-size: 19px;
  color: var(--text-muted);
  max-width: 680px;
  margin: 0 auto 36px;
}

.hero-actions {
  display: flex;
  justify-content: center;
  gap: 16px;
  margin-bottom: 60px;
  flex-wrap: wrap;
}

/* App Mockup Preview */
.app-preview-wrapper {
  position: relative;
  max-width: 900px;
  margin: 0 auto;
}

.app-preview-card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  padding: 40px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(20px);
}

/* Features Grid */
.features {
  padding: 100px 0;
}

.section-header {
  text-align: center;
  margin-bottom: 60px;
}

.section-header h2 {
  font-size: 38px;
  font-weight: 900;
  letter-spacing: -1px;
  margin-bottom: 12px;
}

.section-header p {
  color: var(--text-muted);
  font-size: 17px;
  max-width: 600px;
  margin: 0 auto;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 24px;
}

.feature-card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  padding: 32px;
  transition: transform 0.2s, border-color 0.2s;
}

.feature-card:hover {
  transform: translateY(-4px);
  border-color: rgba(0, 242, 254, 0.4);
}

.feature-icon {
  width: 50px;
  height: 50px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  margin-bottom: 20px;
}

.feature-card h3 {
  font-size: 20px;
  font-weight: 800;
  margin-bottom: 10px;
  letter-spacing: -0.3px;
}

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

/* Stats Section */
.stats {
  padding: 60px 0;
  background: rgba(15, 23, 42, 0.4);
  border-top: 1px solid var(--card-border);
  border-bottom: 1px solid var(--card-border);
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 32px;
  text-align: center;
}

.stat-item h4 {
  font-size: 42px;
  font-weight: 900;
  color: var(--accent);
  margin-bottom: 4px;
}

.stat-item p {
  font-size: 14px;
  color: var(--text-muted);
  font-weight: 600;
}

/* Content Pages (Privacy, Terms, Delete, Contact) */
.page-content {
  padding: 80px 0 120px;
}

.content-card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  padding: 48px;
  backdrop-filter: blur(20px);
}

.content-card h1 {
  font-size: 36px;
  font-weight: 900;
  margin-bottom: 12px;
  letter-spacing: -0.8px;
}

.content-card .updated-date {
  font-size: 13px;
  color: var(--accent);
  font-weight: 700;
  margin-bottom: 32px;
  display: block;
}

.content-card h2 {
  font-size: 22px;
  font-weight: 800;
  margin: 36px 0 16px;
  color: #fff;
  letter-spacing: -0.4px;
}

.content-card p, .content-card li {
  color: var(--text-muted);
  font-size: 15px;
  line-height: 1.8;
  margin-bottom: 16px;
}

.content-card ul {
  padding-left: 24px;
  margin-bottom: 24px;
}

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

.form-group label {
  display: block;
  font-size: 13px;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 8px;
}

.form-control {
  width: 100%;
  padding: 14px 18px;
  background: rgba(15, 23, 42, 0.9);
  border: 1px solid var(--card-border);
  border-radius: 12px;
  color: #fff;
  font-size: 14px;
  transition: border-color 0.2s;
  outline: none;
}

.form-control:focus {
  border-color: var(--accent);
  box-shadow: 0 0 15px rgba(0, 242, 254, 0.2);
}

textarea.form-control {
  resize: vertical;
  min-height: 120px;
}

.alert-box {
  padding: 16px 20px;
  border-radius: 12px;
  margin-bottom: 24px;
  font-size: 14px;
}

.alert-warning {
  background: rgba(245, 158, 11, 0.1);
  border: 1px solid rgba(245, 158, 11, 0.3);
  color: #fbbf24;
}

.alert-danger {
  background: rgba(239, 68, 68, 0.1);
  border: 1px solid rgba(239, 68, 68, 0.3);
  color: #f87171;
}

.alert-success {
  background: rgba(16, 185, 129, 0.1);
  border: 1px solid rgba(16, 185, 129, 0.3);
  color: #34d399;
}

/* Footer */
footer {
  background: #060910;
  border-top: 1px solid var(--card-border);
  padding: 60px 0 40px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 48px;
}

.footer-brand p {
  color: var(--text-dim);
  font-size: 14px;
  margin-top: 16px;
  max-width: 320px;
}

.footer-col h5 {
  font-size: 14px;
  font-weight: 800;
  color: #fff;
  margin-bottom: 20px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.footer-col ul {
  list-style: none;
}

.footer-col ul li {
  margin-bottom: 12px;
}

.footer-col ul a {
  color: var(--text-dim);
  font-size: 14px;
  transition: color 0.2s;
}

.footer-col ul a:hover {
  color: var(--accent);
}

.footer-bottom {
  text-align: center;
  padding-top: 32px;
  border-top: 1px solid rgba(255, 255, 255, 0.04);
  font-size: 13px;
  color: var(--text-dim);
}

@media (max-width: 768px) {
  .hero h1 { font-size: 38px; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .nav-links { display: none; }
  .content-card { padding: 24px; }
}