/* EyeExam Landing Page Styles
 * Dark navy + white + accent blue/green
 * Clean, professional, medical/clinical aesthetic
 */

:root {
    --color-bg-primary: #0a1628;
    --color-bg-secondary: #0d1e36;
    --color-bg-card: rgba(255, 255, 255, 0.03);
    --color-bg-card-hover: rgba(255, 255, 255, 0.06);
    --color-accent: #00d4aa;
    --color-accent-secondary: #0088ff;
    --color-text-primary: #ffffff;
    --color-text-secondary: rgba(255, 255, 255, 0.7);
    --color-text-muted: rgba(255, 255, 255, 0.5);
    --color-border: rgba(255, 255, 255, 0.1);
    --gradient-primary: linear-gradient(135deg, #00d4aa 0%, #0088ff 100%);
    --gradient-glow: radial-gradient(ellipse at center, rgba(0, 212, 170, 0.15) 0%, transparent 70%);
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --transition: all 0.3s ease;
    --shadow-lg: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

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

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.2;
}

h1 {
    font-size: clamp(2.5rem, 5vw, 4rem);
}

h2 {
    font-size: clamp(1.8rem, 4vw, 2.5rem);
}

h3 {
    font-size: 1.25rem;
}

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

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

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(10, 22, 40, 0.8);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--color-border);
}

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

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--color-text-primary);
    text-decoration: none;
    font-weight: 600;
    font-size: 1.25rem;
}

.logo-icon {
    width: 32px;
    height: 32px;
    color: var(--color-accent);
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 32px;
}

.nav-links a {
    color: var(--color-text-secondary);
    text-decoration: none;
    font-size: 0.95rem;
    font-weight: 500;
    transition: var(--transition);
}

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

.nav-links a.btn-primary {
    color: var(--color-bg-primary);
    background: var(--gradient-primary);
    padding: 10px 20px;
    border-radius: 8px;
    font-weight: 600;
}

.nav-links a.btn-primary:hover {
    opacity: 0.9;
    color: var(--color-bg-primary);
}

.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}

.mobile-menu-btn span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--color-text-primary);
    transition: var(--transition);
}

/* Buttons */
.btn-primary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 28px;
    background: var(--gradient-primary);
    color: var(--color-bg-primary);
    text-decoration: none;
    border-radius: 8px;
    font-weight: 600;
    font-size: 0.95rem;
    border: none;
    cursor: pointer;
    transition: var(--transition);
}

.btn-primary:hover {
    opacity: 0.9;
    transform: translateY(-2px);
}

.btn-large {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 16px 36px;
    background: var(--gradient-primary);
    color: var(--color-bg-primary);
    text-decoration: none;
    border-radius: 10px;
    font-weight: 600;
    font-size: 1.05rem;
    border: none;
    cursor: pointer;
    transition: var(--transition);
}

.btn-large:hover {
    opacity: 0.9;
    transform: translateY(-2px);
    box-shadow: 0 10px 40px rgba(0, 212, 170, 0.3);
}

.btn-secondary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 16px 36px;
    background: transparent;
    color: var(--color-text-primary);
    text-decoration: none;
    border-radius: 10px;
    font-weight: 600;
    font-size: 1.05rem;
    border: 1px solid var(--color-border);
    cursor: pointer;
    transition: var(--transition);
}

.btn-secondary:hover {
    background: var(--color-bg-card);
    border-color: rgba(255, 255, 255, 0.2);
}

/* Hero Section */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: 120px 0 80px;
    overflow: hidden;
}

.hero-gradient {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 800px;
    height: 800px;
    background: var(--gradient-glow);
    pointer-events: none;
    z-index: 0;
}

.hero .container {
    position: relative;
    z-index: 1;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

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

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    background: rgba(0, 212, 170, 0.1);
    border: 1px solid rgba(0, 212, 170, 0.2);
    border-radius: 100px;
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--color-accent);
    margin-bottom: 24px;
}

.hero h1 {
    margin-bottom: 20px;
    letter-spacing: -0.02em;
}

.hero-subhead {
    font-size: 1.25rem;
    color: var(--color-text-secondary);
    margin-bottom: 32px;
    line-height: 1.6;
}

.hero-cta {
    display: flex;
    gap: 16px;
    margin-bottom: 24px;
    flex-wrap: wrap;
}

.hero-disclaimer {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.85rem;
    color: var(--color-text-muted);
}

.hero-disclaimer svg {
    width: 16px;
    height: 16px;
    flex-shrink: 0;
}

/* Eye Scanner Animation */
.hero-visual {
    display: flex;
    justify-content: center;
    align-items: center;
}

.eye-scanner {
    position: relative;
    width: 300px;
    height: 300px;
    display: flex;
    justify-content: center;
    align-items: center;
}

.scanner-ring {
    position: absolute;
    border: 1px solid rgba(0, 212, 170, 0.3);
    border-radius: 50%;
    animation: pulse 3s ease-out infinite;
}

.scanner-ring:nth-child(1) {
    width: 100%;
    height: 100%;
    animation-delay: 0s;
}

.scanner-ring:nth-child(2) {
    width: 75%;
    height: 75%;
    animation-delay: 0.5s;
}

.scanner-ring:nth-child(3) {
    width: 50%;
    height: 50%;
    animation-delay: 1s;
}

@keyframes pulse {
    0% {
        transform: scale(0.8);
        opacity: 0.8;
        border-color: rgba(0, 212, 170, 0.5);
    }
    50% {
        transform: scale(1.1);
        opacity: 0.4;
        border-color: rgba(0, 136, 255, 0.3);
    }
    100% {
        transform: scale(1.3);
        opacity: 0;
        border-color: rgba(0, 212, 170, 0);
    }
}

.eye-icon {
    z-index: 2;
    color: var(--color-accent);
}

.eye-icon svg {
    width: 80px;
    height: 80px;
    filter: drop-shadow(0 0 20px rgba(0, 212, 170, 0.5));
}

/* Social Proof Section */
.social-proof {
    padding: 48px 0;
    border-top: 1px solid var(--color-border);
    border-bottom: 1px solid var(--color-border);
    background: var(--color-bg-secondary);
}

.social-text {
    text-align: center;
    font-size: 0.9rem;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 24px;
}

.social-logos {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 48px;
    flex-wrap: wrap;
}

.logo-placeholder {
    font-size: 0.9rem;
    color: var(--color-text-muted);
    opacity: 0.6;
    font-weight: 500;
}

/* Section Styles */
.section-header {
    text-align: center;
    max-width: 600px;
    margin: 0 auto 64px;
}

.section-tag {
    display: inline-block;
    padding: 6px 14px;
    background: rgba(0, 136, 255, 0.1);
    border: 1px solid rgba(0, 136, 255, 0.2);
    border-radius: 100px;
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--color-accent-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 16px;
}

.section-header h2 {
    margin-bottom: 16px;
}

.section-header p {
    font-size: 1.1rem;
}

/* Features Section */
.features {
    padding: 120px 0;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 24px;
}

.feature-card {
    padding: 32px;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: 16px;
    transition: var(--transition);
}

.feature-card:hover {
    background: var(--color-bg-card-hover);
    border-color: rgba(255, 255, 255, 0.2);
    transform: translateY(-4px);
}

.feature-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0, 212, 170, 0.1);
    border-radius: 12px;
    margin-bottom: 20px;
    color: var(--color-accent);
}

.feature-icon svg {
    width: 24px;
    height: 24px;
}

.feature-card h3 {
    margin-bottom: 12px;
    color: var(--color-text-primary);
}

.feature-card p {
    font-size: 0.95rem;
    line-height: 1.6;
}

/* How It Works Section */
.how-it-works {
    padding: 120px 0;
    background: var(--color-bg-secondary);
}

.steps {
    display: flex;
    justify-content: center;
    align-items: flex-start;
    gap: 24px;
    max-width: 900px;
    margin: 0 auto;
}

.step {
    flex: 1;
    text-align: center;
    position: relative;
}

.step-number {
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 32px;
    height: 32px;
    background: var(--gradient-primary);
    color: var(--color-bg-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 0.9rem;
    z-index: 1;
}

.step-content {
    padding-top: 48px;
}

.step-icon {
    width: 64px;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: 16px;
    margin: 0 auto 20px;
    color: var(--color-accent);
}

.step-icon svg {
    width: 28px;
    height: 28px;
}

.step h3 {
    margin-bottom: 12px;
}

.step p {
    font-size: 0.95rem;
    max-width: 240px;
    margin: 0 auto;
}

.step-connector {
    flex-shrink: 0;
    width: 60px;
    height: 2px;
    background: var(--color-border);
    margin-top: 80px;
    position: relative;
}

.step-connector::after {
    content: '';
    position: absolute;
    right: -6px;
    top: 50%;
    transform: translateY(-50%);
    border: 6px solid transparent;
    border-left: 8px solid var(--color-border);
}

/* Waitlist Section */
.waitlist {
    padding: 120px 0;
    background: var(--gradient-glow);
}

.waitlist-content {
    max-width: 600px;
    margin: 0 auto;
    text-align: center;
}

.waitlist-content h2 {
    margin-bottom: 16px;
}

.waitlist-content > p {
    font-size: 1.1rem;
    margin-bottom: 32px;
}

.waitlist-form {
    margin-bottom: 16px;
}

.form-group {
    display: flex;
    gap: 12px;
    margin-bottom: 12px;
}

.form-group input {
    flex: 1;
    padding: 16px 20px;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: 10px;
    color: var(--color-text-primary);
    font-size: 1rem;
    font-family: inherit;
    outline: none;
    transition: var(--transition);
}

.form-group input:focus {
    border-color: rgba(0, 212, 170, 0.5);
    background: var(--color-bg-card-hover);
}

.form-group input::placeholder {
    color: var(--color-text-muted);
}

.form-note {
    font-size: 0.8rem;
    color: var(--color-text-muted);
}

.form-message {
    margin-top: 16px;
    padding: 12px 20px;
    border-radius: 8px;
    font-size: 0.95rem;
    display: none;
}

.form-message.success {
    display: block;
    background: rgba(0, 212, 170, 0.1);
    border: 1px solid rgba(0, 212, 170, 0.2);
    color: var(--color-accent);
}

.form-message.error {
    display: block;
    background: rgba(255, 71, 87, 0.1);
    border: 1px solid rgba(255, 71, 87, 0.2);
    color: #ff4757;
}

/* Footer */
.footer {
    padding: 64px 0 32px;
    border-top: 1px solid var(--color-border);
    background: var(--color-bg-primary);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 48px;
    flex-wrap: wrap;
    gap: 32px;
}

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

.footer-brand .logo {
    margin-bottom: 12px;
}

.footer-tagline {
    font-size: 0.95rem;
    color: var(--color-text-muted);
}

.footer-links {
    display: flex;
    gap: 32px;
}

.footer-links a {
    color: var(--color-text-secondary);
    text-decoration: none;
    font-size: 0.95rem;
    transition: var(--transition);
}

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

.footer-bottom {
    padding-top: 32px;
    border-top: 1px solid var(--color-border);
    text-align: center;
}

.footer-bottom p {
    font-size: 0.85rem;
    color: var(--color-text-muted);
}

/* Responsive Design */
@media (max-width: 968px) {
    .hero .container {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 48px;
    }

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

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

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

    .eye-scanner {
        width: 240px;
        height: 240px;
    }

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

    .step-connector {
        width: 2px;
        height: 40px;
        margin-top: 0;
        margin: 8px 0;
    }

    .step-connector::after {
        right: 50%;
        top: auto;
        bottom: -6px;
        transform: translateX(50%);
        border: 6px solid transparent;
        border-top: 8px solid var(--color-border);
        border-left: 6px solid transparent;
    }

    .step {
        max-width: 320px;
    }
}

@media (max-width: 640px) {
    .nav-links {
        display: none;
    }

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

    .hero {
        padding: 100px 0 60px;
    }

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

    .btn-large, .btn-secondary {
        width: 100%;
        max-width: 280px;
    }

    .features {
        padding: 80px 0;
    }

    .how-it-works {
        padding: 80px 0;
    }

    .waitlist {
        padding: 80px 0;
    }

    .form-group {
        flex-direction: column;
    }

    .form-group button {
        width: 100%;
    }

    .footer-content {
        flex-direction: column;
        align-items: center;
        text-align: center;
    }

    .footer-links {
        gap: 24px;
    }
}

/* Animation on scroll */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.feature-card {
    animation: fadeInUp 0.6s ease-out forwards;
    opacity: 0;
}

.feature-card:nth-child(1) { animation-delay: 0.1s; }
.feature-card:nth-child(2) { animation-delay: 0.2s; }
.feature-card:nth-child(3) { animation-delay: 0.3s; }
.feature-card:nth-child(4) { animation-delay: 0.4s; }