/* ============================================
   CHECKRIDE PAL — Website Styles
   Military Aviation Theme
   ============================================ */

/* --- CSS Custom Properties --- */
:root {
    --bg-primary: #0D120D;
    --bg-card: #141F14;
    --bg-card-hover: #1a2a1a;
    --accent-gold: #E5D633;
    --accent-gold-dim: rgba(229, 214, 51, 0.15);
    --accent-gold-border: rgba(229, 214, 51, 0.3);
    --border: #1F2E1F;
    --border-light: #2a3d2a;
    --text-primary: #FFFFFF;
    --text-secondary: rgba(255, 255, 255, 0.5);
    --text-tertiary: rgba(255, 255, 255, 0.3);
    --success: #40BF40;
    --critical: #D92626;
    --olive-drab: #4D5C48;
    --aluminum: #A5ADAA;
    --font-mono: 'SF Mono', 'Fira Code', 'Cascadia Code', 'Courier New', monospace;
    --nav-height: 64px;
    --container-max: 1200px;
    --radius: 8px;
    --radius-lg: 12px;
    --transition: 0.3s ease;
}

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

html {
    scroll-behavior: smooth;
    scroll-padding-top: var(--nav-height);
}

body {
    font-family: var(--font-mono);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

a {
    color: var(--accent-gold);
    text-decoration: none;
    transition: color var(--transition);
}

a:hover {
    color: #f0e85a;
}

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

.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 24px;
}

/* --- Navbar --- */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--nav-height);
    background: rgba(13, 18, 13, 0.92);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
    z-index: 1000;
    transition: background var(--transition);
}

.nav-container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 24px;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--accent-gold);
    font-weight: 700;
    font-size: 1rem;
    letter-spacing: 2px;
}

.nav-icon {
    width: 36px;
    height: 36px;
    border-radius: 8px;
}

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

.nav-links a {
    color: var(--text-secondary);
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 1.5px;
    transition: color var(--transition);
    position: relative;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--accent-gold);
    transition: width var(--transition);
}

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

.nav-links a:hover::after {
    width: 100%;
}

.nav-cta {
    background: var(--accent-gold);
    color: #000 !important;
    padding: 8px 20px;
    border-radius: var(--radius);
    font-weight: 700;
}

.nav-cta::after {
    display: none !important;
}

.nav-cta:hover {
    background: #f0e85a;
    color: #000 !important;
}

/* Hamburger */
.nav-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}

.hamburger {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    position: relative;
    transition: background var(--transition);
}

.hamburger::before,
.hamburger::after {
    content: '';
    position: absolute;
    left: 0;
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    transition: transform var(--transition);
}

.hamburger::before {
    top: -7px;
}

.hamburger::after {
    top: 7px;
}

.nav-toggle.active .hamburger {
    background: transparent;
}

.nav-toggle.active .hamburger::before {
    transform: translateY(7px) rotate(45deg);
}

.nav-toggle.active .hamburger::after {
    transform: translateY(-7px) rotate(-45deg);
}

/* --- Hero Section --- */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
    padding-top: var(--nav-height);
}

.hero-bg {
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse at 70% 50%, rgba(229, 214, 51, 0.06) 0%, transparent 60%),
                radial-gradient(ellipse at 30% 80%, rgba(64, 191, 64, 0.04) 0%, transparent 50%),
                linear-gradient(180deg, var(--bg-primary) 0%, #0a100a 100%);
}

.hero-content {
    position: relative;
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 60px 24px;
    display: flex;
    align-items: center;
    gap: 60px;
    width: 100%;
}

.hero-text {
    flex: 1;
}

.hero-title {
    font-size: clamp(2.5rem, 6vw, 4.5rem);
    font-weight: 900;
    color: var(--accent-gold);
    letter-spacing: 4px;
    line-height: 1.1;
    margin-bottom: 8px;
}

.hero-subtitle {
    font-size: clamp(0.9rem, 2vw, 1.2rem);
    color: var(--aluminum);
    letter-spacing: 6px;
    font-weight: 500;
    margin-bottom: 24px;
}

.hero-description {
    font-size: clamp(0.95rem, 1.5vw, 1.15rem);
    color: var(--text-secondary);
    max-width: 520px;
    line-height: 1.8;
    margin-bottom: 36px;
}

.hero-buttons {
    margin-bottom: 32px;
}

.hero-badges {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.badge {
    background: var(--accent-gold-dim);
    color: var(--accent-gold);
    padding: 6px 14px;
    border-radius: 20px;
    font-size: 0.7rem;
    font-weight: 600;
    letter-spacing: 1px;
    border: 1px solid var(--accent-gold-border);
}

.hero-image {
    flex: 0 0 auto;
}

.mascot {
    width: 360px;
    height: 360px;
    object-fit: contain;
    filter: drop-shadow(0 20px 60px rgba(229, 214, 51, 0.15));
    animation: float 6s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-15px); }
}

/* --- Buttons --- */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 14px 28px;
    border-radius: var(--radius);
    font-family: var(--font-mono);
    font-size: 0.85rem;
    font-weight: 700;
    letter-spacing: 1px;
    cursor: pointer;
    transition: all var(--transition);
    border: none;
    text-decoration: none;
}

.btn-primary {
    background: var(--accent-gold);
    color: #000;
}

.btn-primary:hover {
    background: #f0e85a;
    color: #000;
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(229, 214, 51, 0.25);
}

.btn-large {
    padding: 18px 36px;
    font-size: 1rem;
}

.apple-icon {
    width: 20px;
    height: 20px;
}

.btn-large .apple-icon {
    width: 22px;
    height: 22px;
}

/* --- Section Common --- */
.section-title {
    font-size: clamp(1.5rem, 3vw, 2.2rem);
    font-weight: 900;
    color: var(--accent-gold);
    letter-spacing: 4px;
    text-align: center;
    margin-bottom: 12px;
}

.section-subtitle {
    font-size: clamp(0.85rem, 1.2vw, 1rem);
    color: var(--text-secondary);
    text-align: center;
    max-width: 600px;
    margin: 0 auto 60px;
    line-height: 1.7;
}

/* --- Features Section --- */
.features {
    padding: 120px 0;
    background: linear-gradient(180deg, var(--bg-primary) 0%, #0a100a 50%, var(--bg-primary) 100%);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 20px;
}

.feature-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 32px 24px;
    transition: all var(--transition);
    position: relative;
    overflow: hidden;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--accent-gold);
    transform: scaleX(0);
    transition: transform var(--transition);
}

.feature-card:hover {
    border-color: var(--accent-gold-border);
    background: var(--bg-card-hover);
    transform: translateY(-4px);
}

.feature-card:hover::before {
    transform: scaleX(1);
}

.feature-emoji {
    font-size: 2.5rem;
    display: block;
    margin-bottom: 16px;
}

.feature-card h3 {
    font-size: 0.9rem;
    font-weight: 700;
    color: var(--text-primary);
    letter-spacing: 1px;
    text-transform: uppercase;
    margin-bottom: 12px;
}

.feature-card p {
    font-size: 0.8rem;
    color: var(--text-secondary);
    line-height: 1.7;
}

/* --- How It Works --- */
.how-it-works {
    padding: 120px 0;
}

.steps {
    display: flex;
    align-items: flex-start;
    justify-content: center;
    gap: 0;
    max-width: 1000px;
    margin: 0 auto;
}

.step {
    flex: 1;
    text-align: center;
    padding: 0 24px;
    position: relative;
}

.step-number {
    font-size: 3rem;
    font-weight: 900;
    color: var(--accent-gold);
    opacity: 0.2;
    line-height: 1;
    margin-bottom: 12px;
}

.step-icon {
    font-size: 3rem;
    margin-bottom: 20px;
    display: block;
}

.step h3 {
    font-size: 0.85rem;
    font-weight: 700;
    letter-spacing: 2px;
    color: var(--text-primary);
    margin-bottom: 16px;
}

.step p {
    font-size: 0.8rem;
    color: var(--text-secondary);
    line-height: 1.7;
}

.step-connector {
    flex: 0 0 60px;
    height: 2px;
    background: linear-gradient(90deg, var(--accent-gold-border), var(--accent-gold), var(--accent-gold-border));
    margin-top: 100px;
    position: relative;
}

.step-connector::after {
    content: '▸';
    position: absolute;
    right: -8px;
    top: -10px;
    color: var(--accent-gold);
    font-size: 1.2rem;
}

/* --- Screenshots Section --- */
.screenshots {
    padding: 120px 0;
    background: linear-gradient(180deg, var(--bg-primary) 0%, #0a100a 50%, var(--bg-primary) 100%);
    overflow: hidden;
}

.screenshots-row {
    display: flex;
    justify-content: center;
    align-items: flex-end;
    gap: 20px;
    max-width: 1300px;
    margin: 0 auto;
    padding: 0 24px;
}

.screenshot-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 16px;
    flex: 0 0 auto;
    width: 240px;
}

.screenshot-item--watch {
    width: 160px;
    background: var(--bg-card);
    padding: 12px;
    border-radius: 24px;
    border: 1px solid var(--border-light);
}

.screenshots-row--watch {
    margin-top: 40px;
}

.screenshot-img {
    width: 100%;
    height: auto;
    display: block;
    border-radius: 24px;
    border: 2px solid var(--border-light);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
    transition: transform var(--transition), box-shadow var(--transition);
}

.screenshot-item:hover .screenshot-img {
    transform: translateY(-8px);
    box-shadow: 0 30px 80px rgba(229, 214, 51, 0.12);
}

.screenshot-img--watch {
    border-radius: 16px;
    mix-blend-mode: lighten;
    border: none;
    box-shadow: none;
}

.screenshot-label {
    font-size: 0.75rem;
    color: var(--text-secondary);
    letter-spacing: 2px;
    font-weight: 600;
    text-align: center;
}

/* --- FAQ Section --- */
.faq {
    padding: 120px 0;
}

.faq-list {
    max-width: 750px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.faq-item {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow: hidden;
    transition: border-color var(--transition);
}

.faq-item:hover {
    border-color: var(--border-light);
}

.faq-item.active {
    border-color: var(--accent-gold-border);
}

.faq-question {
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 24px;
    background: none;
    border: none;
    color: var(--text-primary);
    font-family: var(--font-mono);
    font-size: 0.85rem;
    font-weight: 600;
    letter-spacing: 0.5px;
    cursor: pointer;
    text-align: left;
    transition: color var(--transition);
}

.faq-question:hover {
    color: var(--accent-gold);
}

.faq-chevron {
    font-size: 1rem;
    color: var(--accent-gold);
    transition: transform var(--transition);
    flex-shrink: 0;
    margin-left: 16px;
}

.faq-item.active .faq-chevron {
    transform: rotate(180deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s ease, padding 0.4s ease;
}

.faq-item.active .faq-answer {
    max-height: 300px;
}

.faq-answer p {
    padding: 0 24px 20px;
    font-size: 0.82rem;
    color: var(--text-secondary);
    line-height: 1.8;
}

.faq-answer a {
    color: var(--accent-gold);
}

/* --- Download CTA --- */
.download-cta {
    padding: 120px 0;
    background: radial-gradient(ellipse at center, rgba(229, 214, 51, 0.06) 0%, transparent 70%);
}

.cta-content {
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 20px;
}

.cta-icon {
    width: 100px;
    height: 100px;
    border-radius: 22px;
    box-shadow: 0 10px 40px rgba(229, 214, 51, 0.2);
}

.cta-content h2 {
    font-size: clamp(1.3rem, 2.5vw, 1.8rem);
    font-weight: 900;
    color: var(--text-primary);
    letter-spacing: 2px;
    max-width: 600px;
}

.cta-content p {
    font-size: 1rem;
    color: var(--text-secondary);
    margin-bottom: 12px;
}

/* --- Footer --- */
.footer {
    border-top: 1px solid var(--border);
    padding: 40px 0 24px;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 32px;
}

.footer-brand {
    display: flex;
    align-items: center;
    gap: 14px;
}

.footer-icon {
    width: 44px;
    height: 44px;
    border-radius: 10px;
}

.footer-name {
    display: block;
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--accent-gold);
    letter-spacing: 2px;
}

.footer-tagline {
    display: block;
    font-size: 0.7rem;
    color: var(--text-secondary);
    letter-spacing: 1px;
    margin-top: 2px;
}

.footer-links {
    display: flex;
    gap: 28px;
}

.footer-links a {
    color: var(--text-secondary);
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 1px;
    text-transform: uppercase;
}

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

.footer-bottom {
    border-top: 1px solid var(--border);
    padding-top: 20px;
    text-align: center;
}

.footer-bottom p {
    font-size: 0.7rem;
    color: var(--text-tertiary);
    letter-spacing: 1px;
}

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

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

/* --- Responsive --- */

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

    .screenshot-item {
        width: 220px;
    }

    .screenshot-item--watch {
        width: 150px;
    }

    .steps {
        flex-direction: column;
        align-items: center;
        gap: 32px;
    }

    .step-connector {
        width: 2px;
        height: 40px;
        flex: 0 0 40px;
        background: linear-gradient(180deg, var(--accent-gold-border), var(--accent-gold), var(--accent-gold-border));
        margin-top: 0;
    }

    .step-connector::after {
        content: '▾';
        right: -7px;
        top: auto;
        bottom: -12px;
    }
}

/* Mobile */
@media (max-width: 768px) {
    :root {
        --nav-height: 56px;
    }

    .nav-toggle {
        display: block;
    }

    .nav-links {
        position: fixed;
        top: var(--nav-height);
        left: 0;
        right: 0;
        background: rgba(13, 18, 13, 0.98);
        backdrop-filter: blur(20px);
        -webkit-backdrop-filter: blur(20px);
        flex-direction: column;
        padding: 24px;
        gap: 0;
        border-bottom: 1px solid var(--border);
        transform: translateY(-100%);
        opacity: 0;
        pointer-events: none;
        transition: transform var(--transition), opacity var(--transition);
    }

    .nav-links.open {
        transform: translateY(0);
        opacity: 1;
        pointer-events: all;
    }

    .nav-links li {
        width: 100%;
    }

    .nav-links a {
        display: block;
        padding: 14px 0;
        font-size: 0.85rem;
        border-bottom: 1px solid var(--border);
    }

    .nav-links a::after {
        display: none;
    }

    .nav-cta {
        text-align: center;
        margin-top: 8px;
    }

    .hero-content {
        flex-direction: column-reverse;
        text-align: center;
        padding: 40px 24px;
        gap: 32px;
    }

    .hero-description {
        margin-left: auto;
        margin-right: auto;
    }

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

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

    .mascot {
        width: 240px;
        height: 240px;
    }

    .features-grid {
        grid-template-columns: 1fr;
    }

    .screenshots-row {
        flex-wrap: wrap;
        gap: 20px;
    }

    .screenshot-item {
        width: 160px;
    }

    .screenshot-item--watch {
        width: 120px;
    }

    .footer-content {
        flex-direction: column;
        gap: 24px;
        text-align: center;
    }

    .footer-brand {
        flex-direction: column;
    }

    .footer-links {
        flex-wrap: wrap;
        justify-content: center;
        gap: 20px;
    }
}

/* Small mobile */
@media (max-width: 480px) {
    .hero-title {
        font-size: 2rem;
    }

    .hero-subtitle {
        letter-spacing: 3px;
    }

    .btn {
        padding: 12px 20px;
        font-size: 0.8rem;
    }

    .btn-large {
        padding: 14px 24px;
        font-size: 0.85rem;
    }

    .section-title {
        letter-spacing: 2px;
    }

    .screenshot-item {
        width: 140px;
    }

    .screenshot-item--watch {
        width: 110px;
    }

    .screenshot-img {
        border-radius: 16px;
    }
}