/* ==================== */
/* CSS Variables & Reset */
/* ==================== */

:root {
    /* Colors */
    --color-primary: hsl(210, 100%, 56%);
    --color-primary-dark: hsl(210, 100%, 48%);
    --color-primary-light: hsl(210, 100%, 64%);
    --color-secondary: hsl(280, 60%, 60%);
    --color-accent: hsl(330, 80%, 60%);

    --color-bg-dark: hsl(220, 16%, 8%);
    --color-bg-medium: hsl(220, 16%, 12%);
    --color-bg-light: hsl(220, 16%, 16%);
    --color-bg-lighter: hsl(220, 16%, 20%);

    --color-text-primary: hsl(0, 0%, 98%);
    --color-text-secondary: hsl(0, 0%, 70%);
    --color-text-tertiary: hsl(0, 0%, 50%);

    /* Gradients */
    --gradient-primary: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
    --gradient-accent: linear-gradient(135deg, var(--color-primary) 0%, var(--color-accent) 100%);
    --gradient-overlay: linear-gradient(180deg, rgba(0, 0, 0, 0) 0%, rgba(0, 0, 0, 0.8) 100%);

    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;
    --spacing-3xl: 6rem;

    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 2rem;
    --font-size-4xl: 2.5rem;
    --font-size-5xl: 3.5rem;

    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.2);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.3);
    --shadow-xl: 0 16px 64px rgba(0, 0, 0, 0.4);

    /* Border Radius */
    --radius-sm: 0.5rem;
    --radius-md: 0.75rem;
    --radius-lg: 1rem;
    --radius-xl: 1.5rem;

    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-base: 0.3s ease;
    --transition-slow: 0.5s ease;
}

/* Accessibility Focus Styles */
:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 4px;
    border-radius: 4px;
}

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

html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px;
}

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

a {
    text-decoration: none;
    color: inherit;
}

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

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

/* ==================== */
/* Navigation */
/* ==================== */

.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: var(--spacing-md) 0;
    background: rgba(13, 16, 22, 0.9);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    transition: all var(--transition-base);
}

.nav-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-weight: 700;
    font-size: var(--font-size-xl);
}

.logo-icon {
    font-size: 1.5rem;
}

.nav-links {
    display: flex;
    gap: var(--spacing-xl);
}

.nav-link {
    position: relative;
    font-weight: 500;
    color: var(--color-text-secondary);
    transition: color var(--transition-base);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-primary);
    transition: width var(--transition-base);
}

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

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

/* ==================== */
/* Hero Section */
/* ==================== */

.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding-top: 80px;
    overflow: hidden;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background:
        radial-gradient(circle at 20% 50%, rgba(59, 130, 246, 0.15) 0%, transparent 50%),
        radial-gradient(circle at 80% 30%, rgba(168, 85, 247, 0.15) 0%, transparent 50%);
    z-index: -1;
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-3xl);
    align-items: center;
    padding: var(--spacing-3xl) var(--spacing-lg);
    max-width: 1200px;
    margin: 0 auto;
}

.hero-text {
    animation: fadeInUp 0.8s ease;
}

.hero-title {
    font-size: var(--font-size-5xl);
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: var(--spacing-lg);
}

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

.hero-subtitle {
    font-size: var(--font-size-xl);
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-xl);
    line-height: 1.7;
}

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

.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: 1rem 2rem;
    border-radius: var(--radius-lg);
    font-weight: 600;
    font-size: var(--font-size-base);
    transition: all var(--transition-base);
    cursor: pointer;
    border: none;
}

.btn-primary {
    background: var(--gradient-primary);
    color: white;
    box-shadow: 0 4px 16px rgba(59, 130, 246, 0.4);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(59, 130, 246, 0.5);
}

.btn-secondary {
    background: var(--color-bg-light);
    color: var(--color-text-primary);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.btn-secondary:hover {
    background: var(--color-bg-lighter);
    border-color: rgba(255, 255, 255, 0.2);
    transform: translateY(-2px);
}

.hero-image {
    animation: fadeIn 1s ease 0.3s both;
}

.phone-mockup {
    position: relative;
    display: flex;
    justify-content: center;
}

.phone-frame {
    position: relative;
    width: 320px;
    height: 650px;
    background: #000000;
    /* Pure black background to blend with screen */
    border-radius: 46px;
    /* Slightly rounder outer */
    padding: 8px;
    /* Thinner bezel */
    box-shadow:
        0 0 0 8px #1a1e2e,
        /* Solid outer frame color instead of faint white */
        0 30px 60px rgba(0, 0, 0, 0.5),
        inset 0 0 20px rgba(255, 255, 255, 0.05);
    /* Subtle shine */
}

/* app-screenshot handles inner image */
.app-screenshot {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 38px;
    /* concentric with 46px - 8px = 38px */
    display: block;
    /* Removes potential inline gap */
}

.scroll-indicator {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    animation: bounce 2s infinite;
}

.scroll-arrow {
    width: 30px;
    height: 30px;
    border-left: 2px solid var(--color-primary);
    border-bottom: 2px solid var(--color-primary);
    transform: rotate(-45deg);
}

/* ==================== */
/* Features Section */
/* ==================== */

.features {
    padding: var(--spacing-3xl) 0;
    background: var(--color-bg-medium);
}

.section-header {
    text-align: center;
    margin-bottom: var(--spacing-3xl);
}

.section-title {
    font-size: var(--font-size-4xl);
    font-weight: 800;
    margin-bottom: var(--spacing-md);
}

.section-subtitle {
    font-size: var(--font-size-xl);
    color: var(--color-text-secondary);
}

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

.feature-card {
    background: var(--color-bg-light);
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    transition: all var(--transition-base);
}

.feature-card:hover {
    transform: translateY(-8px);
    border-color: rgba(59, 130, 246, 0.3);
    box-shadow: 0 16px 40px rgba(0, 0, 0, 0.3);
}

.feature-icon {
    width: 64px;
    height: 64px;
    background: var(--gradient-primary);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--spacing-md);
    color: white;
}

.feature-title {
    font-size: var(--font-size-xl);
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
}

.feature-description {
    color: var(--color-text-secondary);
    line-height: 1.7;
}

/* ==================== */
/* Demo Section */
/* ==================== */

.demo-section {
    padding: var(--spacing-3xl) 0;
    background: var(--color-bg-medium);
    position: relative;
    overflow: hidden;
}

/* Background accent for demo section */
.demo-section::before {
    content: '';
    position: absolute;
    top: -50%;
    left: 0;
    width: 100%;
    height: 200%;
    background: radial-gradient(circle at 50% 50%, rgba(59, 130, 246, 0.05) 0%, transparent 60%);
    pointer-events: none;
}

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

.video-wrapper {
    position: relative;
    border-radius: var(--radius-xl);
    padding: var(--spacing-xs);
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.1), rgba(255, 255, 255, 0.02));
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.05);
    box-shadow: var(--shadow-xl);
}

.video-wrapper video {
    width: 100%;
    border-radius: var(--radius-lg);
    display: block;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

.video-glow {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 110%;
    height: 110%;
    background: radial-gradient(circle, rgba(168, 85, 247, 0.15) 0%, transparent 70%);
    z-index: -1;
    filter: blur(40px);
    pointer-events: none;
}

/* ==================== */
/* App Section */
/* ==================== */

.app-section {
    padding: var(--spacing-3xl) 0;
    background: var(--color-bg-dark);
}

.app-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-3xl);
    align-items: center;
}

.app-image-wrapper {
    position: relative;
}

.full-app-screenshot {
    width: 100%;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.app-glow {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 120%;
    height: 120%;
    background: radial-gradient(circle, rgba(59, 130, 246, 0.3) 0%, transparent 70%);
    z-index: -1;
    filter: blur(60px);
}

.app-title {
    font-size: var(--font-size-4xl);
    font-weight: 800;
    margin-bottom: var(--spacing-lg);
}

.app-description {
    font-size: var(--font-size-lg);
    color: var(--color-text-secondary);
    line-height: 1.8;
    margin-bottom: var(--spacing-xl);
}

.app-features {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.app-feature-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    color: var(--color-text-secondary);
}

.app-feature-item svg {
    color: var(--color-primary);
    flex-shrink: 0;
}

/* ==================== */
/* Contact Section */
/* ==================== */

.contact {
    padding: var(--spacing-3xl) 0;
    background: var(--color-bg-medium);
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-3xl);
    align-items: center;
}

.contact-title {
    font-size: var(--font-size-4xl);
    font-weight: 800;
    margin-bottom: var(--spacing-lg);
}

.contact-description {
    font-size: var(--font-size-xl);
    color: var(--color-text-secondary);
    line-height: 1.7;
}

.contact-card {
    background: var(--color-bg-dark);
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-radius: var(--radius-xl);
    padding: var(--spacing-2xl);
    text-align: center;
    transition: all var(--transition-base);
}

.contact-card:hover {
    border-color: rgba(59, 130, 246, 0.3);
    box-shadow: 0 16px 40px rgba(0, 0, 0, 0.3);
}

.contact-icon {
    width: 80px;
    height: 80px;
    background: var(--gradient-primary);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--spacing-lg);
    color: white;
}

.contact-email {
    display: block;
    font-size: var(--font-size-2xl);
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: var(--spacing-sm);
    transition: color var(--transition-base);
}

.contact-email:hover {
    color: var(--color-primary-light);
}

.contact-note {
    color: var(--color-text-tertiary);
    font-size: var(--font-size-sm);
}

/* ==================== */
/* Footer */
/* ==================== */

.footer {
    padding: var(--spacing-2xl) 0 var(--spacing-lg);
    background: var(--color-bg-dark);
    border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-lg);
}

.footer-tagline {
    color: var(--color-text-tertiary);
    margin-top: var(--spacing-xs);
}

.footer-links {
    display: flex;
    gap: var(--spacing-xl);
}

.footer-links a {
    color: var(--color-text-secondary);
    transition: color var(--transition-base);
}

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

.footer-bottom {
    text-align: center;
    padding-top: var(--spacing-lg);
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    color: var(--color-text-tertiary);
    font-size: var(--font-size-sm);
}

/* ==================== */
/* Animations */
/* ==================== */

@keyframes fadeIn {
    from {
        opacity: 0;
    }

    to {
        opacity: 1;
    }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes bounce {

    0%,
    100% {
        transform: translateX(-50%) translateY(0);
    }

    50% {
        transform: translateX(-50%) translateY(-10px);
    }
}

/* ==================== */
/* Responsive Design */
/* ==================== */

@media (max-width: 968px) {

    .hero-content,
    .app-content,
    .contact-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-2xl);
    }

    .hero-title {
        font-size: var(--font-size-4xl);
    }

    .section-title,
    .app-title,
    .contact-title {
        font-size: var(--font-size-3xl);
    }

    .phone-frame {
        width: 280px;
        height: 570px;
    }

    .nav-links {
        gap: var(--spacing-lg);
    }

    .footer-content {
        flex-direction: column;
        gap: var(--spacing-lg);
        text-align: center;
    }
}

@media (max-width: 640px) {
    .hero-title {
        font-size: var(--font-size-3xl);
    }

    .hero-subtitle {
        font-size: var(--font-size-base);
    }

    .hero-buttons {
        flex-direction: column;
    }

    .btn {
        width: 100%;
        justify-content: center;
    }

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

    .nav-links {
        display: none;
    }

    .phone-frame {
        width: 240px;
        height: 490px;
    }

    .section-title,
    .app-title,
    .contact-title {
        font-size: var(--font-size-2xl);
    }
}

/* ==================== */
/* Beta Signup Page */
/* ==================== */

.beta-signup-section {
    min-height: 100vh;
    padding: calc(80px + var(--spacing-3xl)) var(--spacing-lg) var(--spacing-3xl);
    background: var(--color-bg-dark);
}

.beta-signup-content {
    max-width: 800px;
    margin: 0 auto;
}

.beta-signup-header {
    text-align: center;
    margin-bottom: var(--spacing-3xl);
}

.beta-signup-title {
    font-size: var(--font-size-4xl);
    font-weight: 800;
    margin-bottom: var(--spacing-lg);
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.beta-signup-subtitle {
    font-size: var(--font-size-lg);
    color: var(--color-text-secondary);
    line-height: 1.7;
    max-width: 600px;
    margin: 0 auto;
}

.beta-form-wrapper {
    display: grid;
    gap: var(--spacing-2xl);
}

.beta-form {
    background: var(--color-bg-medium);
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-radius: var(--radius-xl);
    padding: var(--spacing-2xl);
}

.form-group {
    margin-bottom: var(--spacing-xl);
}

.form-group:last-of-type {
    margin-bottom: var(--spacing-2xl);
}

.form-label {
    display: block;
    font-size: var(--font-size-lg);
    font-weight: 600;
    margin-bottom: var(--spacing-md);
    color: var(--color-text-primary);
}

.required {
    color: var(--color-primary);
}

.form-input {
    width: 100%;
    padding: 1rem 1.25rem;
    background: var(--color-bg-dark);
    border: 2px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-md);
    color: var(--color-text-primary);
    font-size: var(--font-size-base);
    font-family: var(--font-family);
    transition: all var(--transition-base);
}

.form-input:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.form-input.valid {
    border-color: #10b981;
}

.form-input.invalid {
    border-color: #ef4444;
}

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

.radio-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.radio-label {
    display: flex;
    align-items: center;
    padding: 1rem 1.25rem;
    background: var(--color-bg-dark);
    border: 2px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-base);
    position: relative;
}

.radio-label:hover {
    border-color: rgba(59, 130, 246, 0.3);
    background: var(--color-bg-light);
}

.radio-label input[type="radio"] {
    position: absolute;
    opacity: 0;
    cursor: pointer;
}

.radio-custom {
    width: 20px;
    height: 20px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    margin-right: var(--spacing-md);
    position: relative;
    transition: all var(--transition-base);
    flex-shrink: 0;
}

.radio-label input[type="radio"]:checked~.radio-custom {
    border-color: var(--color-primary);
    background: var(--color-primary);
}

.radio-label input[type="radio"]:checked~.radio-custom::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 8px;
    height: 8px;
    background: white;
    border-radius: 50%;
}

.radio-label input[type="radio"]:checked~.radio-text {
    color: var(--color-text-primary);
    font-weight: 600;
}

.radio-text {
    color: var(--color-text-secondary);
    transition: all var(--transition-base);
}

.btn-submit {
    width: 100%;
    justify-content: center;
    font-size: var(--font-size-lg);
    padding: 1.25rem 2rem;
}

.success-message {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-lg);
    background: rgba(16, 185, 129, 0.1);
    border: 1px solid rgba(16, 185, 129, 0.3);
    border-radius: var(--radius-md);
    color: #10b981;
    margin-top: var(--spacing-lg);
    animation: fadeInUp 0.5s ease;
}

.success-message svg {
    width: 24px;
    height: 24px;
    flex-shrink: 0;
}

.success-message p {
    margin: 0;
    font-weight: 500;
}

.beta-info-box {
    background: var(--color-bg-medium);
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-radius: var(--radius-xl);
    padding: var(--spacing-2xl);
}

.info-box-title {
    font-size: var(--font-size-xl);
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    color: var(--color-text-primary);
}

.info-box-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.info-box-list li {
    padding: var(--spacing-sm) 0;
    padding-left: var(--spacing-xl);
    color: var(--color-text-secondary);
    position: relative;
}

.info-box-list li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--color-primary);
    font-weight: 700;
}

@media (max-width: 640px) {
    .beta-signup-title {
        font-size: var(--font-size-3xl);
    }

    .beta-signup-subtitle {
        font-size: var(--font-size-base);
    }

    .beta-form {
        padding: var(--spacing-lg);
    }

    .form-label {
        font-size: var(--font-size-base);
    }
}