/* ===========================================
   ROAD iD App Landing Page Styles
   Based on roadid.com design patterns
   =========================================== */

/* CSS Custom Properties (Variables) */
:root {
    /* Colors - Road ID Brand */
    --color-primary: #000000;
    --color-secondary: #3c6e71;  /* Teal accent */
    --color-accent: #284b63;     /* Deep blue */
    --color-white: #ffffff;
    --color-light-gray: #f5f5f5;
    --color-medium-gray: #e0e0e0;
    --color-dark-gray: #333333;
    --color-text: #1a1a1a;
    --color-text-light: #666666;
    --color-error: #de2a2a;
    --color-success: #2e7d32;

    /* Typography */
    --font-heading: 'Oswald', sans-serif;
    --font-body: 'Open Sans', sans-serif;

    /* Spacing */
    --spacing-xs: 8px;
    --spacing-sm: 16px;
    --spacing-md: 24px;
    --spacing-lg: 40px;
    --spacing-xl: 64px;
    --spacing-xxl: 96px;

    /* Container */
    --container-max: 1200px;
    --container-padding: 24px;

    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;

    /* Shadows */
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.15);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.2);

    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 16px;
    --radius-full: 9999px;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    font-size: 17px;
    line-height: 1.6;
    color: var(--color-text);
    background-color: var(--color-white);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

a {
    color: inherit;
    text-decoration: none;
    transition: color var(--transition-fast);
}

ul {
    list-style: none;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 600;
    line-height: 1.2;
    text-transform: uppercase;
    letter-spacing: 0.02em;
}

h1 {
    font-size: clamp(40px, 5vw, 62px);
    margin-bottom: var(--spacing-md);
}

.hero h1 {
    text-transform: none;
}

h2 {
    font-size: clamp(32px, 4vw, 48px);
    margin-bottom: var(--spacing-md);
    text-align: center;
}

h3 {
    font-size: clamp(20px, 2.5vw, 24px);
    margin-bottom: var(--spacing-sm);
}

h4 {
    font-size: 18px;
    margin-bottom: var(--spacing-sm);
}

p {
    margin-bottom: var(--spacing-sm);
}

/* Container */
.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--container-padding);
}

/* Section Subtitle */
.section-subtitle {
    text-align: center;
    color: var(--color-text-light);
    font-size: 18px;
    margin-bottom: var(--spacing-lg);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 14px 32px;
    font-family: var(--font-heading);
    font-size: 16px;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border: 2px solid transparent;
    cursor: pointer;
    transition: all var(--transition-fast);
    text-decoration: none;
}

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

.btn-primary:hover {
    background-color: var(--color-dark-gray);
    border-color: var(--color-dark-gray);
}

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

.btn-secondary:hover {
    background-color: var(--color-primary);
    color: var(--color-white);
}

.btn-nav {
    padding: 10px 24px;
    font-size: 14px;
    background-color: var(--color-primary);
    color: var(--color-white);
}

.btn-nav:hover {
    background-color: var(--color-dark-gray);
}

/* ===== HEADER ===== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background-color: var(--color-white);
    box-shadow: var(--shadow-sm);
}

.nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
}

.logo {
    display: flex;
    align-items: center;
}

.logo-img {
    height: 48px;
    width: auto;
}

.logo-text {
    font-family: var(--font-heading);
    font-size: 28px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.02em;
    color: var(--color-primary);
}

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

.nav-links {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.nav-links a {
    font-size: 15px;
    font-weight: 600;
    color: #000000;
    transition: color var(--transition-fast);
}

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

.nav-links .btn-nav {
    color: #ffffff;
}

/* Mobile Menu Button */
.mobile-menu-btn {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 6px;
    width: 32px;
    height: 32px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
}

.mobile-menu-btn span {
    display: block;
    width: 100%;
    height: 2px;
    background-color: var(--color-primary);
    transition: all var(--transition-fast);
}

.mobile-menu-btn.active span:nth-child(1) {
    transform: rotate(45deg) translate(6px, 6px);
}

.mobile-menu-btn.active span:nth-child(2) {
    opacity: 0;
}

.mobile-menu-btn.active span:nth-child(3) {
    transform: rotate(-45deg) translate(6px, -6px);
}

/* Mobile Menu */
.mobile-menu {
    display: none;
    position: fixed;
    top: 72px;
    left: 0;
    right: 0;
    background-color: var(--color-white);
    padding: var(--spacing-md);
    box-shadow: var(--shadow-md);
    flex-direction: column;
    gap: var(--spacing-sm);
    z-index: 999;
}

.mobile-menu.active {
    display: flex;
}

.mobile-menu a {
    padding: var(--spacing-sm);
    font-weight: 600;
    text-align: center;
    color: #000000;
}

.mobile-menu a:hover {
    background-color: var(--color-light-gray);
}

.mobile-menu .btn-primary {
    color: #ffffff;
}

/* ===== HERO SECTION ===== */
.hero {
    padding-top: calc(72px + var(--spacing-xl));
    padding-bottom: var(--spacing-xl);
    background: linear-gradient(135deg, var(--color-white) 0%, var(--color-light-gray) 100%);
    min-height: 100vh;
    display: flex;
    align-items: center;
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1.3fr;
    gap: var(--spacing-xl);
    align-items: center;
}

.hero-text {
    max-width: 560px;
}

.hero-subtitle {
    font-family: var(--font-heading);
    font-size: clamp(24px, 3vw, 32px);
    font-weight: 600;
    text-transform: uppercase;
    color: var(--color-dark-gray);
    letter-spacing: 0.05em;
    margin-bottom: var(--spacing-sm);
}

.hero-tagline {
    font-family: var(--font-heading);
    font-size: clamp(16px, 2vw, 20px);
    font-weight: 500;
    text-transform: uppercase;
    color: var(--color-secondary);
    letter-spacing: 0.1em;
    margin-bottom: var(--spacing-md);
}

.hero-description {
    font-size: 18px;
    color: var(--color-text-light);
    margin-bottom: var(--spacing-lg);
    line-height: 1.7;
}

.hero-cta {
    margin-top: var(--spacing-lg);
}

.cta-text {
    font-family: var(--font-heading);
    font-size: 16px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-text);
    margin-bottom: var(--spacing-md);
}

/* App Store Badges */
.app-badges {
    display: flex;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
}

.app-badge img {
    height: 48px;
    width: auto;
    transition: transform var(--transition-fast);
}

.app-badge:hover img {
    transform: scale(1.05);
}

.app-badges-large .app-badge img {
    height: 56px;
}

.trial-text {
    font-size: 14px;
    color: var(--color-text-light);
    margin-top: var(--spacing-sm);
}

/* Hero Video */
.hero-image {
    display: flex;
    justify-content: center;
    align-items: center;
    width: 100%;
}

.phone-mockup {
    width: 100%;
}

.phone-screen {
    width: 100%;
}

.phone-video {
    width: 100%;
    max-width: 100%;
    height: auto;
    display: block;
    border-radius: var(--radius-md);
}

/* ===== FEATURES SECTION ===== */
.features {
    padding: var(--spacing-xxl) 0;
    background-color: var(--color-white);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-lg);
}

.feature-card {
    text-align: center;
    padding: var(--spacing-lg);
    border-radius: var(--radius-md);
    transition: all var(--transition-normal);
}

.feature-card:hover {
    background-color: var(--color-light-gray);
    transform: translateY(-4px);
}

.feature-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto var(--spacing-md);
    color: var(--color-secondary);
}

.feature-icon svg {
    width: 100%;
    height: 100%;
}

.feature-card h3 {
    color: var(--color-primary);
    margin-bottom: var(--spacing-sm);
}

.feature-card p {
    color: var(--color-text-light);
    font-size: 15px;
    line-height: 1.6;
    margin: 0;
}

/* ===== HOW IT WORKS SECTION ===== */
.how-it-works {
    padding: var(--spacing-xxl) 0;
    background-color: var(--color-light-gray);
}

.steps {
    display: flex;
    align-items: flex-start;
    justify-content: center;
    gap: var(--spacing-md);
}

.step {
    flex: 1;
    max-width: 320px;
    text-align: center;
    padding: var(--spacing-lg);
    background-color: var(--color-white);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
}

.step-number {
    width: 56px;
    height: 56px;
    margin: 0 auto var(--spacing-md);
    background-color: var(--color-primary);
    color: var(--color-white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-heading);
    font-size: 24px;
    font-weight: 600;
}

.step h3 {
    color: var(--color-primary);
}

.step p {
    color: var(--color-text-light);
    font-size: 15px;
    margin: 0;
}

.step-arrow {
    display: flex;
    align-items: center;
    padding-top: var(--spacing-xl);
    color: var(--color-medium-gray);
}

.step-arrow svg {
    width: 32px;
    height: 32px;
}

/* ===== SOCIAL PROOF SECTION ===== */
.social-proof {
    padding: var(--spacing-xl) 0;
    background-color: var(--color-primary);
    color: var(--color-white);
}

.stats-row {
    display: flex;
    justify-content: center;
    gap: var(--spacing-xxl);
}

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

.stat-number {
    display: block;
    font-family: var(--font-heading);
    font-size: clamp(40px, 5vw, 56px);
    font-weight: 700;
    margin-bottom: var(--spacing-xs);
}

.stat-desc {
    font-size: 14px;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    opacity: 0.8;
}

/* ===== TESTIMONIALS SECTION ===== */
.testimonials {
    padding: var(--spacing-xxl) 0;
    background-color: var(--color-white);
}

.testimonial-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-lg);
}

.testimonial-card {
    background-color: var(--color-light-gray);
    padding: var(--spacing-lg);
    border-radius: var(--radius-md);
    position: relative;
}

.testimonial-quote {
    margin-bottom: var(--spacing-md);
}

.quote-icon {
    width: 32px;
    height: 32px;
    color: var(--color-secondary);
    opacity: 0.5;
}

.testimonial-text {
    font-size: 16px;
    font-style: italic;
    line-height: 1.7;
    color: var(--color-text);
    margin-bottom: var(--spacing-md);
}

.testimonial-author {
    font-weight: 600;
    color: var(--color-text-light);
    font-size: 14px;
    margin: 0;
}

/* ===== CTA SECTION ===== */
.cta-section {
    padding: var(--spacing-xxl) 0;
    background: linear-gradient(135deg, #3B82F6 0%, #2563EB 100%);
    text-align: center;
    color: var(--color-white);
}

.cta-content h2 {
    color: var(--color-white);
    margin-bottom: var(--spacing-md);
}

.cta-content p {
    font-size: 18px;
    opacity: 0.9;
    margin-bottom: var(--spacing-lg);
}

.cta-section .app-badges {
    justify-content: center;
}

.cta-section .trial-text {
    color: rgba(255, 255, 255, 0.8);
    margin-top: var(--spacing-md);
}

/* ===== FOOTER ===== */
.footer {
    background-color: var(--color-primary);
    color: var(--color-white);
    padding: var(--spacing-xl) 0 var(--spacing-lg);
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
}

.footer-brand {
    max-width: 300px;
}

.footer-brand .logo {
    margin-bottom: var(--spacing-md);
}

.footer-brand .logo-img {
    height: 48px;
    width: auto;
}

.footer-brand .logo-img.footer-logo {
    filter: brightness(0) invert(1);
}

.footer-brand .logo-text {
    color: var(--color-white);
}

.footer-brand p {
    font-size: 14px;
    opacity: 0.8;
    line-height: 1.6;
}

.social-links {
    display: flex;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-md);
}

.social-links a {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    transition: background-color var(--transition-fast);
}

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

.social-links svg {
    width: 20px;
    height: 20px;
}

.footer-col h4 {
    font-size: 14px;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: var(--spacing-md);
    color: var(--color-white);
}

.footer-col ul li {
    margin-bottom: var(--spacing-xs);
}

.footer-col ul a {
    font-size: 14px;
    opacity: 0.8;
    transition: opacity var(--transition-fast);
}

.footer-col ul a:hover {
    opacity: 1;
}

.footer-badges {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.footer-badges img {
    height: 40px;
    width: auto;
}

.footer-bottom {
    padding-top: var(--spacing-lg);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    text-align: center;
}

.footer-bottom p {
    font-size: 14px;
    opacity: 0.7;
    margin-bottom: var(--spacing-xs);
}

.footer-bottom .disclaimer {
    font-size: 12px;
    opacity: 0.5;
}

/* ===== FAQ / HELP PAGE STYLES ===== */
.help-page {
    padding-top: calc(72px + var(--spacing-xl));
    padding-bottom: var(--spacing-xxl);
    min-height: 100vh;
    background-color: var(--color-light-gray);
}

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

.help-header h1 {
    margin-bottom: var(--spacing-sm);
}

.help-header p {
    color: var(--color-text-light);
    font-size: 18px;
}

.faq-container {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    background-color: var(--color-white);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-sm);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
}

.faq-question {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-md) var(--spacing-lg);
    background: none;
    border: none;
    cursor: pointer;
    text-align: left;
    font-family: var(--font-body);
    font-size: 16px;
    font-weight: 600;
    color: var(--color-text);
    transition: background-color var(--transition-fast);
}

.faq-question:hover {
    background-color: var(--color-light-gray);
}

.faq-question.active {
    background-color: var(--color-light-gray);
}

.faq-icon {
    flex-shrink: 0;
    width: 24px;
    height: 24px;
    margin-left: var(--spacing-md);
    color: var(--color-secondary);
    transition: transform var(--transition-fast);
}

.faq-question.active .faq-icon {
    transform: rotate(180deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-normal);
}

.faq-answer-content {
    padding: 0 var(--spacing-lg) var(--spacing-lg);
    color: var(--color-text-light);
    line-height: 1.7;
}

.faq-answer-content p {
    margin: 0;
}

.faq-answer-content a {
    color: var(--color-secondary);
    text-decoration: underline;
}

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

.faq-answer-content ol {
    margin: var(--spacing-sm) 0;
    padding-left: var(--spacing-md);
    list-style: decimal;
}

.faq-answer-content ol li {
    margin-bottom: var(--spacing-xs);
}

.faq-answer-content p + p {
    margin-top: var(--spacing-sm);
}

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

/* Tablet */
@media (max-width: 999px) {
    :root {
        --container-padding: 20px;
    }

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

    .hero-text {
        max-width: 100%;
    }

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

    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .steps {
        flex-wrap: wrap;
    }

    .step-arrow {
        display: none;
    }

    .step {
        flex: 1 1 calc(50% - var(--spacing-md));
    }

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

    .stats-row {
        gap: var(--spacing-lg);
    }

    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* Mobile */
@media (max-width: 740px) {
    .nav-links {
        display: none;
    }

    .mobile-menu-btn {
        display: flex;
    }

    .hero {
        padding-top: calc(72px + var(--spacing-lg));
        min-height: auto;
        padding-bottom: var(--spacing-lg);
    }

    .phone-mockup {
        max-width: 100%;
    }

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

    .feature-card {
        padding: var(--spacing-md);
    }

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

    .step {
        flex: 1 1 100%;
        width: 100%;
        max-width: 400px;
    }

    .stats-row {
        flex-direction: column;
        gap: var(--spacing-lg);
    }

    .footer-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }

    .footer-brand {
        max-width: 100%;
        text-align: center;
    }

    .social-links {
        justify-content: center;
    }

    .footer-col {
        text-align: center;
    }

    .footer-badges {
        align-items: center;
    }

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

/* Small Mobile */
@media (max-width: 480px) {
    h1 {
        font-size: 32px;
    }

    h2 {
        font-size: 28px;
    }

    .hero-description {
        font-size: 16px;
    }

    .app-badge img {
        height: 42px;
    }

    .phone-mockup {
        max-width: 100%;
    }
}

/* Print Styles */
@media print {
    .header,
    .mobile-menu,
    .app-badges,
    .social-links {
        display: none;
    }

    .hero {
        padding-top: var(--spacing-lg);
    }

    body {
        font-size: 12pt;
    }
}