/* ========================================
   DASHLINK - Racing Telemetry Website
   Professional Motorsport Design
   ======================================== */

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

:root {
    /* DashLink App Colors */
    --primary: #4A9EFF;
    --primary-dark: #3A7FCC;
    --secondary: #5AB8FF;
    --accent: #FFD700;

    /* Dark Theme */
    --bg-dark: #1A1A1A;
    --bg-darker: #0D0D0D;
    --bg-card: #252525;
    --bg-hover: #2F2F2F;

    /* Text */
    --text-primary: #FFFFFF;
    --text-secondary: #B0B0B0;
    --text-muted: #707070;

    /* Borders */
    --border-color: #333333;
    --border-accent: #4A9EFF;

    /* Fonts */
    --font-display: 'Orbitron', sans-serif;
    --font-body: 'Rajdhani', sans-serif;

    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 6rem;
}

body {
    font-family: var(--font-body);
    background: var(--bg-dark);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* ========================================
   NAVIGATION
   ======================================== */

.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(10, 10, 10, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 2px solid var(--border-color);
    z-index: 1000;
    padding: 1rem 0;
}

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-logo {
    font-family: var(--font-display);
    font-size: 1.8rem;
    font-weight: 900;
    letter-spacing: 2px;
}

.nav-logo a {
    text-decoration: none;
}

.logo-dash {
    color: var(--primary);
}

.logo-link {
    color: var(--secondary);
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 600;
    font-size: 1.1rem;
    letter-spacing: 1px;
    text-transform: uppercase;
    transition: color 0.3s ease;
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary);
    transition: width 0.3s ease;
}

.nav-link:hover,
.nav-link.active {
    color: var(--primary);
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 100%;
}

/* ========================================
   HERO SECTION
   ======================================== */

.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background:
        linear-gradient(135deg, rgba(74, 158, 255, 0.1) 0%, rgba(90, 184, 255, 0.1) 100%),
        radial-gradient(circle at 20% 50%, rgba(74, 158, 255, 0.15) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(90, 184, 255, 0.15) 0%, transparent 50%),
        var(--bg-darker);
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image:
        repeating-linear-gradient(0deg, transparent, transparent 2px, rgba(74, 158, 255, 0.03) 2px, rgba(74, 158, 255, 0.03) 4px),
        repeating-linear-gradient(90deg, transparent, transparent 2px, rgba(90, 184, 255, 0.03) 2px, rgba(90, 184, 255, 0.03) 4px);
    pointer-events: none;
}

.hero-content {
    text-align: center;
    z-index: 2;
    padding: var(--spacing-lg) var(--spacing-md);
    margin-top: 80px;
}

.hero-title {
    font-family: var(--font-display);
    font-size: clamp(3rem, 10vw, 8rem);
    font-weight: 900;
    letter-spacing: 0.1em;
    margin-bottom: var(--spacing-sm);
    line-height: 1.1;
}

.glitch {
    position: relative;
    color: var(--text-primary);
    text-shadow:
        2px 2px 0 var(--primary),
        -2px -2px 0 var(--secondary);
}

.hero-subtitle {
    font-family: var(--font-display);
    font-size: clamp(1rem, 2vw, 1.5rem);
    color: var(--secondary);
    letter-spacing: 0.3em;
    margin-bottom: var(--spacing-md);
    font-weight: 700;
}

.hero-description {
    font-size: clamp(1.1rem, 2vw, 1.4rem);
    color: var(--text-secondary);
    max-width: 700px;
    margin: 0 auto var(--spacing-lg);
    font-weight: 500;
}

.hero-buttons {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    flex-wrap: wrap;
}

.btn {
    padding: 1rem 3rem;
    font-family: var(--font-display);
    font-size: 1.1rem;
    font-weight: 700;
    text-decoration: none;
    text-transform: uppercase;
    letter-spacing: 2px;
    border: 2px solid;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.btn-primary {
    background: var(--primary);
    border-color: var(--primary);
    color: var(--text-primary);
}

.btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(255, 0, 0, 0.4);
}

.btn-secondary {
    background: transparent;
    border-color: var(--secondary);
    color: var(--secondary);
}

.btn-secondary:hover {
    background: var(--secondary);
    color: var(--bg-dark);
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(0, 217, 255, 0.4);
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: var(--spacing-lg);
    margin-top: var(--spacing-xl);
    flex-wrap: wrap;
}

.stat-item {
    text-align: center;
}

.stat-number {
    font-family: var(--font-display);
    font-size: 3rem;
    font-weight: 900;
    color: var(--primary);
    line-height: 1;
}

.stat-label {
    font-size: 1rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 2px;
    margin-top: 0.5rem;
}

.scroll-indicator {
    position: absolute;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    text-align: center;
    color: var(--text-secondary);
    font-size: 0.9rem;
    letter-spacing: 2px;
    text-transform: uppercase;
}

.scroll-arrow {
    width: 30px;
    height: 50px;
    border: 2px solid var(--text-secondary);
    border-radius: 20px;
    margin: 1rem auto 0;
    position: relative;
}

.scroll-arrow::before {
    content: '';
    position: absolute;
    top: 10px;
    left: 50%;
    transform: translateX(-50%);
    width: 6px;
    height: 6px;
    background: var(--text-secondary);
    border-radius: 50%;
    animation: scroll 2s infinite;
}

@keyframes scroll {
    0%, 100% { top: 10px; opacity: 1; }
    50% { top: 25px; opacity: 0.5; }
}

/* ========================================
   SECTIONS
   ======================================== */

section {
    padding: var(--spacing-xl) 0;
}

.section-header {
    text-align: center;
    margin-bottom: var(--spacing-lg);
}

.section-title {
    font-family: var(--font-display);
    font-size: clamp(2rem, 5vw, 3.5rem);
    font-weight: 900;
    letter-spacing: 0.1em;
    margin-bottom: var(--spacing-sm);
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-subtitle {
    font-size: 1.3rem;
    color: var(--text-secondary);
    max-width: 700px;
    margin: 0 auto;
}

/* ========================================
   FEATURES SECTION
   ======================================== */

.features {
    background: var(--bg-dark);
    position: relative;
}

.features::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--primary), transparent);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--spacing-md);
}

.feature-card {
    background: var(--bg-card);
    padding: var(--spacing-md);
    border: 1px solid var(--border-color);
    border-left: 3px solid var(--primary);
    transition: all 0.3s ease;
}

.feature-card:hover {
    background: var(--bg-hover);
    border-left-width: 5px;
    transform: translateX(5px);
    box-shadow: 0 10px 30px rgba(255, 0, 0, 0.2);
}

.feature-icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-sm);
}

.feature-card h3 {
    font-family: var(--font-display);
    font-size: 1.5rem;
    margin-bottom: var(--spacing-sm);
    color: var(--secondary);
    letter-spacing: 1px;
}

.feature-card p {
    color: var(--text-secondary);
    line-height: 1.8;
}

/* ========================================
   TELEMETRY SECTION
   ======================================== */

.telemetry {
    background: var(--bg-darker);
}

.telemetry-layout {
    display: grid;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.telemetry-block {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    padding: var(--spacing-md);
}

.telemetry-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-md);
    padding-bottom: var(--spacing-sm);
    border-bottom: 2px solid var(--primary);
}

.telemetry-header h3 {
    font-family: var(--font-display);
    font-size: 1.5rem;
    letter-spacing: 2px;
    color: var(--primary);
}

.connection-badge {
    background: var(--primary);
    color: var(--text-primary);
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 700;
    letter-spacing: 1px;
}

.connection-badge.arduino {
    background: var(--secondary);
    color: var(--bg-dark);
}

.telemetry-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: var(--spacing-sm);
}

.telemetry-item {
    display: flex;
    gap: 1rem;
    background: var(--bg-dark);
    padding: 1rem;
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
}

.telemetry-item:hover {
    border-color: var(--primary);
    background: var(--bg-hover);
}

.telemetry-item.highlight {
    border-left: 3px solid var(--secondary);
}

.telem-icon {
    font-size: 2rem;
    flex-shrink: 0;
}

.telem-info {
    display: flex;
    flex-direction: column;
    gap: 0.3rem;
}

.telem-name {
    font-family: var(--font-display);
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text-primary);
    letter-spacing: 1px;
}

.telem-desc {
    font-size: 0.95rem;
    color: var(--text-secondary);
}

.telem-range {
    font-size: 0.85rem;
    color: var(--accent);
    font-weight: 600;
    font-family: var(--font-display);
}

.telemetry-features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
}

.telem-feature {
    background: var(--bg-card);
    padding: var(--spacing-md);
    border-left: 4px solid var(--accent);
}

.telem-feature h4 {
    font-family: var(--font-display);
    font-size: 1.3rem;
    margin-bottom: var(--spacing-sm);
    color: var(--accent);
}

.telem-feature p {
    color: var(--text-secondary);
    line-height: 1.8;
}

/* ========================================
   DOWNLOAD SECTION
   ======================================== */

.download {
    background:
        linear-gradient(135deg, rgba(255, 0, 0, 0.05) 0%, rgba(0, 217, 255, 0.05) 100%),
        var(--bg-dark);
}

.download-content {
    max-width: 900px;
    margin: 0 auto;
    text-align: center;
}

.download-subtitle {
    font-size: 1.2rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-lg);
}

.download-box {
    background: var(--bg-card);
    border: 2px solid var(--primary);
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.download-icon {
    font-size: 5rem;
    margin-bottom: var(--spacing-sm);
}

.download-box h3 {
    font-family: var(--font-display);
    font-size: 2rem;
    color: var(--primary);
    margin-bottom: var(--spacing-sm);
}

.download-box p {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
}

.btn-download {
    display: inline-block;
    margin: var(--spacing-md) 0;
    background: var(--primary);
    border-color: var(--primary);
    color: var(--text-primary);
}

.btn-download:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(255, 0, 0, 0.4);
}

.download-note {
    font-size: 0.9rem;
    color: var(--text-muted);
    font-style: italic;
}

.requirements {
    background: var(--bg-card);
    padding: var(--spacing-md);
    margin-bottom: var(--spacing-md);
    text-align: left;
    border-left: 4px solid var(--secondary);
}

.requirements h4 {
    font-family: var(--font-display);
    font-size: 1.5rem;
    color: var(--secondary);
    margin-bottom: var(--spacing-sm);
}

.requirements ul {
    list-style-position: inside;
    color: var(--text-secondary);
    line-height: 2;
}

.hardware-setup {
    background: var(--bg-card);
    padding: var(--spacing-md);
    text-align: left;
    border-left: 4px solid var(--accent);
}

.hardware-setup h4 {
    font-family: var(--font-display);
    font-size: 1.5rem;
    color: var(--accent);
    margin-bottom: var(--spacing-sm);
}

.hardware-grid {
    display: grid;
    gap: var(--spacing-sm);
}

.hardware-item {
    background: var(--bg-dark);
    padding: 1rem;
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
}

.hardware-item strong {
    color: var(--text-primary);
    display: block;
    margin-bottom: 0.3rem;
}

/* ========================================
   FOOTER
   ======================================== */

.footer {
    background: var(--bg-darker);
    border-top: 2px solid var(--border-color);
    padding: var(--spacing-lg) 0 var(--spacing-md);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-md);
}

.footer-brand h3 {
    font-family: var(--font-display);
    font-size: 1.8rem;
    margin-bottom: var(--spacing-sm);
}

.footer-brand p {
    color: var(--text-secondary);
}

.footer-links h4,
.footer-contact h4 {
    font-family: var(--font-display);
    color: var(--primary);
    margin-bottom: var(--spacing-sm);
    letter-spacing: 1px;
}

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

.footer-links li {
    margin-bottom: 0.5rem;
}

.footer-links a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: color 0.3s ease;
}

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

.footer-contact p {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-sm);
}

.footer-email {
    color: var(--secondary);
    text-decoration: none;
    font-weight: 700;
}

.footer-email:hover {
    text-decoration: underline;
}

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

/* ========================================
   PRIVACY PAGE
   ======================================== */

.privacy-section {
    padding-top: 120px;
    padding-bottom: var(--spacing-xl);
    background: var(--bg-dark);
}

.privacy-header {
    text-align: center;
    margin-bottom: var(--spacing-xl);
}

.page-title {
    font-family: var(--font-display);
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 900;
    letter-spacing: 0.1em;
    margin-bottom: var(--spacing-sm);
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.privacy-date {
    font-size: 1.1rem;
    color: var(--text-muted);
    font-style: italic;
}

.privacy-content {
    max-width: 1000px;
    margin: 0 auto;
}

.privacy-intro {
    background: var(--bg-card);
    padding: var(--spacing-md);
    border-left: 4px solid var(--primary);
    margin-bottom: var(--spacing-lg);
}

.privacy-intro p {
    font-size: 1.2rem;
    color: var(--text-secondary);
    line-height: 1.8;
}

.privacy-block {
    background: var(--bg-card);
    padding: var(--spacing-md);
    margin-bottom: var(--spacing-md);
    border: 1px solid var(--border-color);
}

.privacy-block h2 {
    font-family: var(--font-display);
    font-size: 2rem;
    color: var(--primary);
    margin-bottom: var(--spacing-sm);
    letter-spacing: 1px;
}

.privacy-block h3 {
    font-family: var(--font-display);
    font-size: 1.5rem;
    color: var(--secondary);
    margin: var(--spacing-sm) 0;
    letter-spacing: 1px;
}

.privacy-block h4 {
    font-family: var(--font-display);
    font-size: 1.2rem;
    color: var(--text-primary);
    margin: var(--spacing-sm) 0;
}

.privacy-block p {
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: var(--spacing-sm);
}

.privacy-block ul {
    color: var(--text-secondary);
    line-height: 2;
    margin-left: var(--spacing-md);
    margin-bottom: var(--spacing-sm);
}

.privacy-block li {
    margin-bottom: 0.5rem;
}

.privacy-block strong {
    color: var(--text-primary);
}

.privacy-block em {
    color: var(--accent);
}

.permission-list {
    display: grid;
    gap: var(--spacing-sm);
    margin: var(--spacing-sm) 0;
}

.permission-item {
    background: var(--bg-dark);
    padding: 1rem;
    border-left: 3px solid var(--secondary);
}

.permission-item strong {
    display: block;
    color: var(--secondary);
    margin-bottom: 0.5rem;
    font-size: 1.1rem;
}

.permission-item p {
    color: var(--text-secondary);
    margin: 0;
}

.contact-block {
    border: 2px solid var(--primary);
    background: var(--bg-darker);
}

.contact-info {
    background: var(--bg-dark);
    padding: var(--spacing-sm);
    margin-top: var(--spacing-sm);
}

.contact-info p {
    margin-bottom: 0.5rem;
}

.contact-info a {
    color: var(--secondary);
    text-decoration: none;
    font-weight: 700;
}

.contact-info a:hover {
    text-decoration: underline;
}

.privacy-summary {
    background: linear-gradient(135deg, rgba(255, 0, 0, 0.1) 0%, rgba(0, 217, 255, 0.1) 100%);
    padding: var(--spacing-md);
    border: 2px solid var(--accent);
    margin-top: var(--spacing-lg);
}

.privacy-summary h3 {
    font-family: var(--font-display);
    font-size: 1.8rem;
    color: var(--accent);
    margin-bottom: var(--spacing-sm);
}

.summary-box {
    background: var(--bg-card);
    padding: var(--spacing-sm);
}

.summary-box p {
    font-size: 1.1rem;
    margin-bottom: var(--spacing-sm);
}

.summary-box ul {
    margin-left: var(--spacing-md);
}

/* ========================================
   RESPONSIVE
   ======================================== */

@media (max-width: 1024px) {
    .nav-menu {
        gap: 1rem;
    }

    .hero-stats {
        gap: var(--spacing-md);
    }

    .features-grid {
        grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    }
}

@media (max-width: 768px) {
    .nav-menu {
        flex-direction: column;
        position: fixed;
        top: 70px;
        right: -100%;
        background: var(--bg-darker);
        width: 100%;
        padding: 2rem;
        transition: right 0.3s ease;
        border-top: 2px solid var(--border-color);
    }

    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }

    .btn {
        width: 100%;
        max-width: 300px;
    }

    .hero-stats {
        flex-direction: column;
        gap: var(--spacing-sm);
    }

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

    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .footer-links ul {
        text-align: center;
    }
}

@media (max-width: 480px) {
    :root {
        --spacing-md: 1rem;
        --spacing-lg: 2rem;
        --spacing-xl: 3rem;
    }

    .nav-logo {
        font-size: 1.4rem;
    }

    .hero-content {
        padding: var(--spacing-md);
    }

    .section-title {
        font-size: 2rem;
    }

    .feature-card,
    .telemetry-block,
    .privacy-block {
        padding: 1rem;
    }
}

/* ========================================
   ANIMATIONS
   ======================================== */

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.feature-card,
.telemetry-item,
.download-box {
    animation: fadeIn 0.6s ease-out;
}

/* Smooth Scrolling */
html {
    scroll-behavior: smooth;
}

/* Selection */
::selection {
    background: var(--primary);
    color: var(--text-primary);
}

::-moz-selection {
    background: var(--primary);
    color: var(--text-primary);
}

/* ========================================
   SCREENSHOTS SECTION
   ======================================== */

.screenshots {
    padding: var(--spacing-xl) 0;
    background: var(--bg-darker);
}

.screenshots-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: var(--spacing-lg);
}

.screenshot-item {
    background: var(--bg-card);
    border-radius: 12px;
    overflow: hidden;
    border: 2px solid var(--border-color);
    transition: all 0.3s ease;
}

.screenshot-item:hover {
    transform: translateY(-5px);
    border-color: var(--primary);
    box-shadow: 0 10px 40px rgba(74, 158, 255, 0.3);
}

.screenshot-item img {
    width: 100%;
    height: auto;
    display: block;
}

.screenshot-caption {
    padding: 1.5rem;
    text-align: center;
}

.screenshot-caption h3 {
    font-family: var(--font-display);
    font-size: 1.3rem;
    color: var(--primary);
    margin-bottom: 0.5rem;
}

.screenshot-caption p {
    color: var(--text-secondary);
    font-size: 1rem;
}