/* InsidePerf — Dark Athletic Performance Theme */
/* Electric Blue #3b82f6 + Navy #0c0c14 + Gold #f59e0b */

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

:root {
  --bg: #0c0c14;
  --bg-card: #13131f;
  --bg-elevated: #1a1a2e;
  --border: #1e1e32;
  --text-primary: #f0f0f8;
  --text-secondary: #8888a8;
  --text-muted: #555572;
  --accent: #3b82f6;
  --accent-hover: #2563eb;
  --accent-glow: rgba(59, 130, 246, 0.25);
  --gold: #f59e0b;
  --green: #10b981;
  --red: #ef4444;
  --radius: 10px;
  --radius-sm: 6px;
  --transition: 0.2s ease;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--bg);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
}
[dir="rtl"] body { font-family: 'Noto Sans Arabic', -apple-system, sans-serif; }

/* ---- Typography ---- */
h1, h2, h3, h4 { font-weight: 700; line-height: 1.2; }
a { color: var(--accent); text-decoration: none; transition: var(--transition); }
a:hover { color: var(--accent-hover); }

/* ---- Navbar ---- */
.navbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 40px;
  background: rgba(12, 12, 20, 0.9);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 100;
}
.navbar-brand {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--text-primary);
  letter-spacing: -0.02em;
}
.navbar-brand span { color: var(--accent); }
.nav-links { display: flex; gap: 24px; list-style: none; align-items: center; }
.nav-links a { color: var(--text-secondary); font-size: 0.9rem; font-weight: 500; transition: var(--transition); }
.nav-links a:hover, .nav-links a.active { color: var(--text-primary); }
.nav-right { display: flex; gap: 12px; align-items: center; }

/* ---- Buttons ---- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 20px;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 0.9rem;
  cursor: pointer;
  border: none;
  transition: var(--transition);
  white-space: nowrap;
}
.btn-primary {
  background: var(--accent);
  color: #fff;
}
.btn-primary:hover { background: var(--accent-hover); box-shadow: 0 4px 20px var(--accent-glow); }
.btn-secondary {
  background: transparent;
  color: var(--text-primary);
  border: 1px solid var(--border);
}
.btn-secondary:hover { background: var(--bg-elevated); border-color: var(--accent); }
.btn-ghost {
  background: transparent;
  color: var(--text-secondary);
  padding: 8px 12px;
}
.btn-ghost:hover { color: var(--text-primary); }
.btn-sm { padding: 6px 14px; font-size: 0.8rem; }
.btn-lg { padding: 14px 28px; font-size: 1rem; border-radius: var(--radius); }

/* ---- Hero ---- */
.hero {
  padding: 80px 40px 60px;
  text-align: center;
  max-width: 700px;
  margin: 0 auto;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: 100px;
  padding: 6px 16px;
  font-size: 0.8rem;
  color: var(--text-secondary);
  margin-bottom: 24px;
}
.hero-badge .dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--green);
  animation: pulse 2s infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}
.hero h1 {
  font-size: 3rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  margin-bottom: 16px;
  line-height: 1.1;
}
.hero h1 .highlight { color: var(--accent); }
.hero-sub {
  font-size: 1.1rem;
  color: var(--text-secondary);
  margin-bottom: 40px;
  max-width: 520px;
  margin-left: auto;
  margin-right: auto;
}
.hero-actions { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }

/* ---- Feature Grid ---- */
.features {
  padding: 40px 40px 80px;
  max-width: 1100px;
  margin: 0 auto;
}
.section-label {
  text-align: center;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--accent);
  font-weight: 600;
  margin-bottom: 12px;
}
.section-title {
  text-align: center;
  font-size: 2rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 48px;
}
.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 20px;
}
.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}
.feature-card:hover {
  border-color: var(--accent);
  box-shadow: 0 8px 40px rgba(59, 130, 246, 0.08);
  transform: translateY(-2px);
}
.feature-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sm);
  background: var(--accent-glow);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  margin-bottom: 16px;
}
.feature-card h3 { font-size: 1rem; font-weight: 700; margin-bottom: 8px; }
.feature-card p { font-size: 0.85rem; color: var(--text-secondary); line-height: 1.5; }

/* ---- Stats Bar ---- */
.stats-bar {
  display: flex;
  justify-content: center;
  gap: 48px;
  padding: 32px 40px;
  background: var(--bg-card);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  flex-wrap: wrap;
}
.stat-item { text-align: center; }
.stat-value { font-size: 1.8rem; font-weight: 800; color: var(--accent); }
.stat-label { font-size: 0.8rem; color: var(--text-secondary); margin-top: 2px; }

/* ---- Auth Modal ---- */
.auth-section {
  max-width: 480px;
  margin: 0 auto 60px;
  padding: 0 24px;
}
.auth-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 36px;
  position: relative;
}
.auth-tabs {
  display: flex;
  border-bottom: 1px solid var(--border);
  margin-bottom: 28px;
}
.auth-tab {
  flex: 1;
  padding: 10px;
  text-align: center;
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--text-secondary);
  cursor: pointer;
  border-bottom: 2px solid transparent;
  transition: var(--transition);
  background: none;
  border-top: none;
  border-left: none;
  border-right: none;
}
.auth-tab.active { color: var(--text-primary); border-bottom-color: var(--accent); }
.auth-tab:hover:not(.active) { color: var(--text-primary); }

.auth-form { display: none; }
.auth-form.active { display: block; }

.form-group { margin-bottom: 16px; }
.form-label {
  display: block;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: 6px;
}
.form-input {
  width: 100%;
  padding: 10px 14px;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-size: 0.9rem;
  transition: var(--transition);
  outline: none;
  font-family: inherit;
}
.form-input:focus { border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-glow); }
.form-input::placeholder { color: var(--text-muted); }
.form-checkbox {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  margin-bottom: 12px;
  cursor: pointer;
}
.form-checkbox input[type="checkbox"] {
  width: 16px;
  height: 16px;
  accent-color: var(--accent);
  flex-shrink: 0;
  margin-top: 2px;
}
.form-checkbox span { font-size: 0.85rem; color: var(--text-secondary); line-height: 1.4; }
.form-checkbox a { color: var(--accent); }
.form-error {
  background: rgba(239, 68, 68, 0.1);
  border: 1px solid rgba(239, 68, 68, 0.3);
  border-radius: var(--radius-sm);
  padding: 10px 14px;
  font-size: 0.85rem;
  color: var(--red);
  margin-bottom: 16px;
  display: none;
}
.form-error.visible { display: block; }
.auth-submit {
  width: 100%;
  padding: 12px;
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: var(--radius-sm);
  font-size: 0.95rem;
  font-weight: 700;
  cursor: pointer;
  transition: var(--transition);
  font-family: inherit;
}
.auth-submit:hover { background: var(--accent-hover); box-shadow: 0 4px 20px var(--accent-glow); }
.auth-submit:disabled { opacity: 0.5; cursor: not-allowed; }
.auth-divider { text-align: center; color: var(--text-muted); font-size: 0.85rem; margin: 20px 0; }

/* ---- Language Switcher ---- */
.lang-switcher {
  display: flex;
  align-items: center;
  gap: 4px;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: 100px;
  padding: 4px;
}
.lang-btn {
  padding: 4px 10px;
  border-radius: 100px;
  font-size: 0.75rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  border: none;
  background: transparent;
  color: var(--text-secondary);
}
.lang-btn.active { background: var(--accent); color: #fff; }

/* ---- Footer ---- */
.footer {
  border-top: 1px solid var(--border);
  padding: 24px 40px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}
.footer-copy { font-size: 0.8rem; color: var(--text-muted); }
.footer-links { display: flex; gap: 20px; }
.footer-links a { font-size: 0.8rem; color: var(--text-secondary); }
.footer-links a:hover { color: var(--text-primary); }

/* ---- Loading state ---- */
.loading { display: none; align-items: center; gap: 8px; }
.loading.visible { display: flex; }

/* ---- Demo Banner ---- */
.demo-banner {
  background: linear-gradient(90deg, var(--accent), #6366f1);
  text-align: center;
  padding: 12px 20px;
  font-size: 0.85rem;
  color: #fff;
  font-weight: 500;
}
.demo-banner strong { font-weight: 700; }

/* ---- Responsive ---- */
@media (max-width: 640px) {
  .navbar { padding: 12px 20px; }
  .hero { padding: 48px 20px 40px; }
  .hero h1 { font-size: 2rem; }
  .features { padding: 32px 20px 60px; }
  .stats-bar { gap: 28px; padding: 24px 20px; }
  .auth-card { padding: 24px; }
  .footer { padding: 20px; }
}