/* ============================================
   Apple-Inspired Design System
   Premium, Minimal, Elegant
   Mobile-First Optimized
   ============================================ */

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

:root {
    --bg-primary: #000000;
    --bg-secondary: #1d1d1f;
    --text-primary: #f5f5f7;
    --text-secondary: #86868b;
    --accent-blue: #2997ff;
    --accent-purple: #bf5af2;
    --accent-pink: #ff375f;
    --glass-bg: rgba(29, 29, 31, 0.72);
    --glass-border: rgba(255, 255, 255, 0.08);

    /* Mobile-first spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;

    /* Safe areas for notched devices */
    --safe-top: env(safe-area-inset-top, 0px);
    --safe-bottom: env(safe-area-inset-bottom, 0px);
    --safe-left: env(safe-area-inset-left, 0px);
    --safe-right: env(safe-area-inset-right, 0px);
}

html {
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    -webkit-text-size-adjust: 100%;
    -ms-text-size-adjust: 100%;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'SF Pro Display', 'SF Pro Text', 'Helvetica Neue', sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    min-height: 100vh;
    min-height: -webkit-fill-available;
    display: flex;
    flex-direction: column;
    overflow-x: hidden;
    padding-top: var(--safe-top);
    padding-bottom: var(--safe-bottom);
    padding-left: var(--safe-left);
    padding-right: var(--safe-right);
}

/* Animated Gradient Background */
.gradient-bg {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background:
        radial-gradient(ellipse 80% 50% at 20% 40%, rgba(41, 151, 255, 0.15), transparent),
        radial-gradient(ellipse 60% 40% at 80% 60%, rgba(191, 90, 242, 0.12), transparent),
        radial-gradient(ellipse 50% 30% at 50% 80%, rgba(255, 55, 95, 0.08), transparent);
    z-index: 0;
    animation: gradientShift 15s ease-in-out infinite alternate;
    pointer-events: none;
}

@keyframes gradientShift {
    0% {
        opacity: 1;
        transform: scale(1);
    }
    100% {
        opacity: 0.8;
        transform: scale(1.1);
    }
}

/* Main Container - Mobile First */
.container {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-lg) var(--spacing-sm);
    position: relative;
    z-index: 1;
}

.content {
    width: 100%;
    max-width: 680px;
    text-align: center;
    padding: 0 var(--spacing-xs);
}

/* Typography - Mobile First */
.eyebrow {
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--accent-blue);
    margin-bottom: var(--spacing-sm);
    opacity: 0;
    animation: fadeInUp 0.8s ease forwards;
}

.headline {
    font-size: 2.25rem;
    font-weight: 700;
    line-height: 1.1;
    letter-spacing: -0.02em;
    margin-bottom: var(--spacing-sm);
    opacity: 0;
    animation: fadeInUp 0.8s ease 0.2s forwards;
    word-wrap: break-word;
    overflow-wrap: break-word;
    hyphens: auto;
}

.gradient-text {
    background: linear-gradient(90deg, var(--accent-blue), var(--accent-purple), var(--accent-pink));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    display: inline-block;
}

.subheadline {
    font-size: 1rem;
    font-weight: 400;
    color: var(--text-secondary);
    line-height: 1.6;
    max-width: 100%;
    margin: 0 auto var(--spacing-lg);
    opacity: 0;
    animation: fadeInUp 0.8s ease 0.4s forwards;
    padding: 0 var(--spacing-xs);
}

/* Email Notify Section - Mobile Optimized */
.notify-section {
    opacity: 0;
    animation: fadeInUp 0.8s ease 0.6s forwards;
    width: 100%;
}

.input-wrapper {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
    width: 100%;
    max-width: 100%;
    margin: 0 auto;
    padding: var(--spacing-xs);
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 1rem;
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
}

.email-input {
    width: 100%;
    background: transparent;
    border: none;
    padding: 1rem;
    font-size: 16px; /* Prevents iOS zoom on focus */
    font-family: inherit;
    color: var(--text-primary);
    outline: none;
    text-align: center;
    border-radius: 0.75rem;
    -webkit-appearance: none;
    appearance: none;
}

.email-input::placeholder {
    color: var(--text-secondary);
}

.email-input:focus {
    background: rgba(255, 255, 255, 0.05);
}

.notify-btn {
    width: 100%;
    background: var(--text-primary);
    color: var(--bg-primary);
    border: none;
    padding: 1rem 1.5rem;
    font-size: 1rem;
    font-weight: 600;
    font-family: inherit;
    border-radius: 0.75rem;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.25, 0.1, 0.25, 1);
    white-space: nowrap;
    -webkit-tap-highlight-color: transparent;
    touch-action: manipulation;
    min-height: 48px; /* Touch-friendly minimum */
}

.notify-btn:hover {
    transform: scale(1.02);
    box-shadow: 0 4px 20px rgba(255, 255, 255, 0.25);
}

.notify-btn:active {
    transform: scale(0.98);
    background: #e0e0e0;
}

.notify-btn:disabled {
    opacity: 0.7;
    cursor: not-allowed;
}

/* Form Messages */
.form-message {
    margin-top: var(--spacing-sm);
    font-size: 0.875rem;
    text-align: center;
    min-height: 1.5rem;
}

.form-message.success {
    color: #30d158;
}

.form-message.error {
    color: var(--accent-pink);
}

/* Footer - Mobile First */
.footer {
    position: relative;
    z-index: 1;
    padding: 0 var(--spacing-sm) var(--spacing-sm);
}

.footer-glass {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 1rem;
    padding: var(--spacing-md);
    backdrop-filter: blur(40px);
    -webkit-backdrop-filter: blur(40px);
}

.footer-content {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

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

.footer-logo {
    font-size: 1.25rem;
    font-weight: 600;
    letter-spacing: -0.02em;
    display: block;
    margin-bottom: 0.375rem;
}

.footer-tagline {
    font-size: 0.8125rem;
    color: var(--text-secondary);
}

.footer-links {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    text-align: center;
}

.footer-column h4 {
    font-size: 0.6875rem;
    font-weight: 600;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--text-secondary);
    margin-bottom: 0.75rem;
}

.footer-column a {
    display: block;
    font-size: 0.9375rem;
    color: var(--text-primary);
    text-decoration: none;
    margin-bottom: 0.5rem;
    padding: 0.375rem 0;
    transition: color 0.2s ease;
    -webkit-tap-highlight-color: transparent;
}

.footer-column a:hover,
.footer-column a:active {
    color: var(--accent-blue);
}

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

.footer-bottom p {
    font-size: 0.75rem;
    color: var(--text-secondary);
}

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

/* ============================================
   Tablet Breakpoint (768px+)
   ============================================ */
@media (min-width: 768px) {
    :root {
        --spacing-lg: 3rem;
        --spacing-xl: 4rem;
    }

    .container {
        padding: var(--spacing-xl) var(--spacing-lg);
    }

    .eyebrow {
        font-size: 0.875rem;
        margin-bottom: var(--spacing-md);
    }

    .headline {
        font-size: 3.5rem;
        letter-spacing: -0.03em;
        margin-bottom: var(--spacing-md);
    }

    .subheadline {
        font-size: 1.25rem;
        max-width: 480px;
        margin-bottom: var(--spacing-xl);
    }

    .input-wrapper {
        flex-direction: row;
        gap: 0.75rem;
        max-width: 420px;
        padding: 0.5rem;
        border-radius: 980px;
    }

    .email-input {
        flex: 1;
        text-align: left;
        padding: 0.875rem 1.25rem;
    }

    .notify-btn {
        width: auto;
        padding: 0.875rem 1.75rem;
        border-radius: 980px;
    }

    .footer {
        padding: 0 var(--spacing-md) var(--spacing-md);
    }

    .footer-glass {
        padding: var(--spacing-lg);
        border-radius: 1.5rem;
    }

    .footer-content {
        flex-direction: row;
        justify-content: space-between;
        align-items: flex-start;
    }

    .footer-brand {
        text-align: left;
        flex: 1;
    }

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

    .footer-links {
        flex-direction: row;
        gap: 3rem;
        text-align: left;
    }
}

/* ============================================
   Desktop Breakpoint (1024px+)
   ============================================ */
@media (min-width: 1024px) {
    .headline {
        font-size: 4.5rem;
    }

    .subheadline {
        font-size: 1.375rem;
    }

    .footer-links {
        gap: 4rem;
    }
}

/* ============================================
   Large Desktop (1440px+)
   ============================================ */
@media (min-width: 1440px) {
    .headline {
        font-size: 5rem;
    }
}

/* ============================================
   Landscape Mobile
   ============================================ */
@media (max-width: 896px) and (orientation: landscape) {
    .container {
        padding: var(--spacing-sm);
        min-height: auto;
    }

    .headline {
        font-size: 1.75rem;
    }

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

    .footer-glass {
        padding: var(--spacing-sm);
    }

    .footer-content {
        flex-direction: row;
        flex-wrap: wrap;
    }
}

/* ============================================
   High-DPI Displays
   ============================================ */
@media (-webkit-min-device-pixel-ratio: 2), (min-resolution: 192dpi) {
    body {
        -webkit-font-smoothing: subpixel-antialiased;
    }
}

/* ============================================
   Dark Mode Support (already dark, but for system)
   ============================================ */
@media (prefers-color-scheme: dark) {
    :root {
        color-scheme: dark;
    }
}

/* ============================================
   Reduced Motion
   ============================================ */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }

    .gradient-bg {
        animation: none;
    }
}

/* ============================================
   Touch Device Optimizations
   ============================================ */
@media (hover: none) and (pointer: coarse) {
    .notify-btn:hover {
        transform: none;
        box-shadow: none;
    }

    .footer-column a {
        padding: 0.5rem 0;
    }
}