/* Aviation Companion - Shared Styles (Dark Developer Theme) */
@import url('https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@300;400;500;600;700&family=JetBrains+Mono:wght@300;400;500;600;700&family=Inter:wght@300;400;500;600;700&display=swap');

:root {
    --bg-primary: #0a0a0f;
    --bg-secondary: #12121a;
    --bg-tertiary: #1a1a2e;
    --bg-card: rgba(22, 22, 35, 0.8);
    --bg-glass: rgba(255, 255, 255, 0.03);
    --neon-cyan: #00f5d4;
    --neon-purple: #9b5de5;
    --neon-pink: #f15bb5;
    --neon-blue: #00bbf9;
    --neon-yellow: #fee440;
    --neon-green: #00ff88;
    --gradient-primary: linear-gradient(135deg, #00f5d4 0%, #00bbf9 50%, #9b5de5 100%);
    --gradient-accent: linear-gradient(135deg, #f15bb5 0%, #9b5de5 100%);
    --text-primary: #e8e8f0;
    --text-secondary: #8888a0;
    --text-muted: #55556a;
    --text-accent: #00f5d4;
    --border-subtle: rgba(255, 255, 255, 0.06);
    --border-glow: rgba(0, 245, 212, 0.3);
    --shadow-neon: 0 0 20px rgba(0, 245, 212, 0.15);
    --radius-sm: 0.5rem;
    --radius-md: 1rem;
    --radius-lg: 1.5rem;
    --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-smooth: 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 80px; }

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.7;
    color: var(--text-primary);
    background: var(--bg-primary);
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    margin: 0;
}

::selection {
    background: rgba(0, 245, 212, 0.2);
    color: var(--neon-cyan);
}

a { color: var(--neon-cyan); text-decoration: none; transition: var(--transition-fast); }
a:hover { color: var(--neon-purple); }

h1, h2, h3, h4, h5, h6 {
    font-family: 'Space Grotesk', sans-serif;
    font-weight: 700;
    line-height: 1.1;
    color: var(--text-primary);
}

p { color: var(--text-secondary); margin-bottom: 1rem; }

.container { max-width: 1200px; margin: 0 auto; padding: 0 2rem; }

/* ===== NAVBAR ===== */
.site-nav {
    position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
    padding: 1rem 0; background: rgba(10, 10, 15, 0.9);
    backdrop-filter: blur(20px); border-bottom: 1px solid var(--border-subtle);
}

.nav-container {
    max-width: 1200px; margin: 0 auto; padding: 0 2rem;
    display: flex; align-items: center; justify-content: space-between;
}

.nav-brand {
    font-family: 'Space Grotesk', sans-serif; font-size: 1.4rem; font-weight: 700;
    color: var(--text-primary); display: flex; align-items: center; gap: 0.5rem; text-decoration: none;
}
.nav-brand .brand-symbol { color: var(--neon-cyan); font-family: 'JetBrains Mono', monospace; font-weight: 400; }

.nav-menu {
    display: flex; align-items: center; gap: 0.25rem; list-style: none; margin: 0; padding: 0;
}
.nav-menu a {
    font-family: 'JetBrains Mono', monospace; font-size: 0.8rem; font-weight: 500;
    color: var(--text-muted); padding: 0.5rem 1rem; border-radius: var(--radius-sm);
    transition: var(--transition-fast); text-decoration: none;
}
.nav-menu a:hover, .nav-menu a.active { color: var(--neon-cyan); background: rgba(0, 245, 212, 0.05); }

.nav-toggle {
    display: none; flex-direction: column; gap: 5px; cursor: pointer;
    padding: 0.5rem; background: none; border: none;
}
.nav-toggle span { width: 22px; height: 2px; background: var(--text-primary); border-radius: 2px; transition: var(--transition-fast); }
.nav-toggle.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.nav-toggle.active span:nth-child(2) { opacity: 0; }
.nav-toggle.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

/* ===== HERO ===== */
.hero-section {
    padding: 8rem 0 5rem; position: relative; overflow: hidden; text-align: center;
}
.hero-section::before {
    content: ''; position: absolute; top: -30%; right: -20%; width: 60%; height: 80%;
    background: radial-gradient(ellipse, rgba(155, 93, 229, 0.08) 0%, transparent 70%); pointer-events: none;
}
.hero-section::after {
    content: ''; position: absolute; bottom: -20%; left: -10%; width: 50%; height: 60%;
    background: radial-gradient(ellipse, rgba(0, 245, 212, 0.05) 0%, transparent 70%); pointer-events: none;
}
.hero-section .container { position: relative; z-index: 2; }
.hero-section h1 {
    font-size: clamp(2.5rem, 6vw, 4rem); letter-spacing: -0.03em; margin-bottom: 1rem;
}
.hero-section .lead { font-size: 1.15rem; color: var(--text-secondary); max-width: 650px; margin: 0 auto 2rem; }
.hero-icon { font-size: 3.5rem; margin-bottom: 1.5rem; display: block; }

.text-gradient {
    background: var(--gradient-primary); -webkit-background-clip: text;
    -webkit-text-fill-color: transparent; background-clip: text;
}

/* ===== BUTTONS ===== */
.btn {
    font-family: 'JetBrains Mono', monospace; font-size: 0.85rem; font-weight: 600;
    padding: 0.875rem 2rem; border-radius: var(--radius-sm); border: none; cursor: pointer;
    position: relative; overflow: hidden; transition: var(--transition-smooth);
    text-decoration: none; display: inline-flex; align-items: center; gap: 0.5rem;
}
.btn-primary {
    background: var(--gradient-primary); color: var(--bg-primary); font-weight: 700;
    box-shadow: 0 4px 20px rgba(0, 245, 212, 0.2);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 32px rgba(0, 245, 212, 0.35); color: var(--bg-primary); }

.btn-outline {
    background: transparent; border: 1.5px solid var(--border-glow); color: var(--neon-cyan);
}
.btn-outline:hover { background: rgba(0, 245, 212, 0.08); border-color: var(--neon-cyan); box-shadow: var(--shadow-neon); transform: translateY(-2px); color: var(--neon-cyan); }

.btn-danger {
    background: linear-gradient(135deg, #f15bb5, #e74c3c); color: #fff; font-weight: 700;
    box-shadow: 0 4px 20px rgba(241, 91, 181, 0.2);
}
.btn-danger:hover { transform: translateY(-2px); box-shadow: 0 8px 32px rgba(241, 91, 181, 0.35); color: #fff; }

.btn-lg { padding: 1.1rem 2.5rem; font-size: 0.9rem; }
.btn-sm { padding: 0.6rem 1.25rem; font-size: 0.75rem; }

/* ===== CARDS ===== */
.glass-card {
    background: var(--bg-card); border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg); padding: 2rem; position: relative;
    overflow: hidden; backdrop-filter: blur(20px); transition: var(--transition-smooth);
}
.glass-card:hover { border-color: rgba(0, 245, 212, 0.15); transform: translateY(-4px); box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4), var(--shadow-neon); }

.feature-card {
    background: var(--bg-card); border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg); padding: 2rem; text-align: center;
    transition: var(--transition-smooth); height: 100%;
}
.feature-card:hover { border-color: rgba(155, 93, 229, 0.2); transform: translateY(-4px); box-shadow: 0 16px 64px rgba(0, 0, 0, 0.3); }

.feature-icon {
    width: 56px; height: 56px; border-radius: var(--radius-md);
    display: inline-flex; align-items: center; justify-content: center;
    font-size: 1.5rem; margin-bottom: 1.25rem; transition: var(--transition-smooth);
}
.feature-card:hover .feature-icon { transform: scale(1.1) rotate(-3deg); }

.feature-card h5 { font-size: 1.1rem; font-weight: 600; margin-bottom: 0.5rem; color: var(--text-primary); }
.feature-card p { font-size: 0.9rem; color: var(--text-secondary); margin: 0; }

/* Icon color variants */
.icon-cyan { background: rgba(0, 245, 212, 0.1); color: var(--neon-cyan); border: 1px solid rgba(0, 245, 212, 0.15); }
.icon-purple { background: rgba(155, 93, 229, 0.1); color: var(--neon-purple); border: 1px solid rgba(155, 93, 229, 0.15); }
.icon-pink { background: rgba(241, 91, 181, 0.1); color: var(--neon-pink); border: 1px solid rgba(241, 91, 181, 0.15); }
.icon-blue { background: rgba(0, 187, 249, 0.1); color: var(--neon-blue); border: 1px solid rgba(0, 187, 249, 0.15); }
.icon-yellow { background: rgba(254, 228, 64, 0.1); color: var(--neon-yellow); border: 1px solid rgba(254, 228, 64, 0.15); }
.icon-green { background: rgba(0, 255, 136, 0.1); color: var(--neon-green); border: 1px solid rgba(0, 255, 136, 0.15); }

/* ===== SECTIONS ===== */
section { position: relative; padding: 5rem 0; }
section + section::before {
    content: ''; position: absolute; top: 0; left: 0; right: 0; height: 1px;
    background: linear-gradient(90deg, transparent, var(--border-subtle), transparent);
}

.section-title {
    font-size: clamp(2rem, 4vw, 3rem); letter-spacing: -0.03em; margin-bottom: 1rem; text-align: center;
}
.section-title .accent { background: var(--gradient-primary); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.section-subtitle { font-size: 1.05rem; color: var(--text-secondary); max-width: 600px; margin: 0 auto 3rem; text-align: center; }

/* ===== GRID LAYOUTS ===== */
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1.5rem; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.5rem; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.5rem; }

/* ===== CTA SECTION ===== */
.cta-section {
    background: var(--bg-secondary); border-top: 1px solid var(--border-subtle);
    border-bottom: 1px solid var(--border-subtle); text-align: center; padding: 5rem 0;
}
.cta-section h2 { margin-bottom: 1rem; }
.cta-section p { max-width: 600px; margin: 0 auto 2rem; }
.cta-buttons { display: flex; flex-wrap: wrap; justify-content: center; gap: 1rem; }

/* ===== AUDIENCE SECTION ===== */
.audience-card { text-align: center; padding: 2rem 1.5rem; }
.audience-icon {
    font-size: 2.5rem; margin-bottom: 1rem; display: block;
    background: var(--gradient-primary); -webkit-background-clip: text;
    -webkit-text-fill-color: transparent; background-clip: text;
}
.audience-card h5 { font-size: 1.1rem; margin-bottom: 0.5rem; }
.audience-card p { font-size: 0.9rem; color: var(--text-muted); margin: 0; }

/* ===== FORMS ===== */
.form-group { margin-bottom: 1.5rem; }
.form-label {
    font-family: 'JetBrains Mono', monospace; font-size: 0.8rem; font-weight: 500;
    color: var(--text-secondary); margin-bottom: 0.5rem; display: block;
}
.form-control, .form-select {
    background: var(--bg-secondary); border: 1.5px solid var(--border-subtle);
    border-radius: var(--radius-sm); padding: 0.875rem 1.25rem; color: var(--text-primary);
    font-family: 'Inter', sans-serif; font-size: 0.95rem; transition: var(--transition-fast); width: 100%;
}
.form-control::placeholder { color: var(--text-muted); }
.form-control:focus, .form-select:focus {
    background: var(--bg-secondary); border-color: var(--neon-cyan); outline: none;
    box-shadow: 0 0 0 3px rgba(0, 245, 212, 0.1); color: var(--text-primary);
}
.form-select {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' fill='%2300f5d4' viewBox='0 0 16 16'%3E%3Cpath d='M8 11L3 6h10l-5 5z'/%3E%3C/svg%3E");
    background-repeat: no-repeat; background-position: right 1rem center; padding-right: 2.5rem;
}
.form-check { display: flex; align-items: flex-start; gap: 0.75rem; }
.form-check-input {
    width: 18px; height: 18px; margin: 2px 0 0 0; flex-shrink: 0;
    background-color: var(--bg-secondary); border: 1.5px solid var(--border-subtle);
    border-radius: 4px; appearance: none; cursor: pointer; transition: var(--transition-fast);
}
.form-check-input:checked { background-color: var(--neon-cyan); border-color: var(--neon-cyan); }
.form-check-label { color: var(--text-secondary); font-size: 0.9rem; }

/* ===== CONTENT STYLES (Privacy, Support) ===== */
.content-section { max-width: 800px; margin: 0 auto; }
.content-section h2 {
    font-size: 1.4rem; color: var(--neon-cyan); margin-bottom: 1rem; padding-bottom: 0.75rem;
    border-bottom: 1px solid var(--border-subtle);
}
.content-section h3 { font-size: 1.1rem; color: var(--text-primary); margin-top: 1.5rem; margin-bottom: 0.5rem; }
.content-section ul { color: var(--text-secondary); padding-left: 1.25rem; }
.content-section li { margin-bottom: 0.5rem; }

.info-box {
    border-left: 3px solid var(--neon-cyan); background: rgba(0, 245, 212, 0.03);
    padding: 1.25rem; border-radius: 0 var(--radius-sm) var(--radius-sm) 0; margin-bottom: 1.5rem;
}
.info-box h6 { color: var(--text-primary); font-weight: 600; margin-bottom: 0.5rem; }

.warning-box {
    border-left: 3px solid var(--neon-pink); background: rgba(241, 91, 181, 0.03);
    padding: 1.25rem; border-radius: 0 var(--radius-sm) var(--radius-sm) 0; margin-bottom: 1.5rem;
}
.warning-box h6 { color: var(--text-primary); font-weight: 600; margin-bottom: 0.5rem; }

.effective-date {
    background: rgba(0, 245, 212, 0.03); border-left: 3px solid var(--neon-cyan);
    padding: 1rem 1.25rem; border-radius: 0 var(--radius-sm) var(--radius-sm) 0; margin-bottom: 2rem;
    color: var(--text-secondary); font-size: 0.9rem;
}
.effective-date strong { color: var(--text-primary); }

/* Data tables */
.data-table { width: 100%; border-collapse: collapse; margin: 1rem 0; font-size: 0.9rem; }
.data-table th { background: var(--bg-tertiary); color: var(--neon-cyan); font-weight: 600; padding: 0.75rem 1rem; text-align: left; border: 1px solid var(--border-subtle); }
.data-table td { padding: 0.75rem 1rem; border: 1px solid var(--border-subtle); color: var(--text-secondary); }

/* FAQ */
.faq-item {
    border-left: 3px solid var(--neon-purple); padding-left: 1.25rem; margin-bottom: 2rem;
}
.faq-item h5 { font-size: 1rem; font-weight: 600; margin-bottom: 0.5rem; color: var(--text-primary); }
.faq-item p { color: var(--text-secondary); font-size: 0.95rem; margin: 0; }

/* Steps */
.step-number {
    width: 36px; height: 36px; border-radius: 50%; background: var(--gradient-primary);
    color: var(--bg-primary); display: inline-flex; align-items: center; justify-content: center;
    font-weight: 700; font-size: 0.85rem; flex-shrink: 0;
}
.step-row { display: flex; align-items: flex-start; gap: 1rem; margin-bottom: 1.5rem; }
.step-row h6 { color: var(--text-primary); font-weight: 600; margin-bottom: 0.25rem; }
.step-row p { color: var(--text-secondary); font-size: 0.9rem; margin: 0; }

/* ===== FOOTER ===== */
.site-footer {
    background: var(--bg-secondary); border-top: 1px solid var(--border-subtle); padding: 3rem 0 1.5rem;
}
.footer-inner {
    display: flex; justify-content: space-between; align-items: center;
    padding-top: 1.5rem; border-top: 1px solid var(--border-subtle);
}
.footer-inner p { font-size: 0.8rem; color: var(--text-muted); margin: 0; }
.footer-links { display: flex; gap: 1.5rem; list-style: none; margin: 0; padding: 0; }
.footer-links a { font-size: 0.8rem; color: var(--text-muted); transition: var(--transition-fast); }
.footer-links a:hover { color: var(--neon-cyan); }

/* ===== ANIMATIONS ===== */
@keyframes fadeInUp { from { opacity: 0; transform: translateY(30px); } to { opacity: 1; transform: translateY(0); } }

.animate-fade-up { opacity: 0; transform: translateY(30px); transition: opacity 0.6s ease, transform 0.6s ease; }
.animate-fade-up.visible { opacity: 1; transform: translateY(0); }
.delay-1 { transition-delay: 0.1s; }
.delay-2 { transition-delay: 0.2s; }
.delay-3 { transition-delay: 0.3s; }
.delay-4 { transition-delay: 0.4s; }
.delay-5 { transition-delay: 0.5s; }

/* ===== RESPONSIVE ===== */
@media (max-width: 1024px) {
    .grid-3 { grid-template-columns: repeat(2, 1fr); }
    .grid-4 { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
    .nav-menu {
        position: fixed; top: 0; right: -100%; width: 75%; max-width: 320px; height: 100vh;
        flex-direction: column; align-items: flex-start; padding: 5rem 2rem 2rem;
        background: var(--bg-secondary); border-left: 1px solid var(--border-subtle);
        transition: right var(--transition-smooth); gap: 0.5rem;
    }
    .nav-menu.open { right: 0; }
    .nav-menu a { font-size: 1rem; padding: 0.75rem 1rem; width: 100%; }
    .nav-toggle { display: flex; }
    .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
    .hero-section { padding: 7rem 0 3rem; }
    .hero-section h1 { font-size: clamp(2rem, 8vw, 3rem); }
    .footer-inner { flex-direction: column; gap: 1rem; text-align: center; }
    .cta-buttons { flex-direction: column; align-items: center; }
    .cta-buttons .btn { width: 100%; max-width: 280px; justify-content: center; }
}

@media (max-width: 480px) {
    section { padding: 3.5rem 0; }
    .container { padding: 0 1.25rem; }
}

/* ===== ACCESSIBILITY ===== */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
    .animate-fade-up { opacity: 1; transform: none; }
}
*:focus-visible { outline: 2px solid var(--neon-cyan); outline-offset: 3px; }

/* ===== UTILITIES ===== */
.text-center { text-align: center; }
.mb-0 { margin-bottom: 0; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }
.mb-4 { margin-bottom: 2rem; }
.mb-5 { margin-bottom: 3rem; }
.mt-3 { margin-top: 1.5rem; }
.mt-4 { margin-top: 2rem; }
.mt-5 { margin-top: 3rem; }

/* Overlay for mobile nav */
.nav-overlay {
    position: fixed; top: 0; left: 0; width: 100%; height: 100%;
    background: rgba(0, 0, 0, 0.5); opacity: 0; visibility: hidden;
    transition: var(--transition-smooth); z-index: 998;
}
.nav-overlay.active { opacity: 1; visibility: visible; }

/* Confirmation hide/show */
#confirmationMessage { display: none; }