/* ========================================
   Uttero Website - Apple 2025 Style
   ======================================== */

:root {
    --color-bg: #000000;
    --color-text: #ffffff;
    --color-text-secondary: #86868b;
    --color-text-tertiary: #6e6e73;
    --color-primary: #6695FF;
    
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --radius-lg: 980px;
}

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

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
}

body {
    font-family: var(--font-family);
    font-size: 16px;
    line-height: 1.6;
    color: var(--color-text);
    background: var(--color-bg);
}

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

/* Skip to content link */
.skip-to-content {
    position: absolute;
    top: -100px;
    left: 0;
    background: var(--color-text);
    color: var(--color-bg);
    padding: 12px 24px;
    font-weight: 500;
    z-index: 1000;
    border-radius: 0 0 8px 0;
}

.skip-to-content:focus {
    top: 0;
}

/* Focus states */
a:focus-visible,
button:focus-visible,
.btn:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 4px;
    border-radius: var(--radius-lg);
}

.benefit:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
    border-radius: 4px;
}

/* Page Load Animation */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Hero Section */
.hero {
    position: relative;
    min-height: 100vh;
    min-height: 100dvh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    text-align: center;
}

.hero-background {
    position: absolute;
    inset: 0;
    pointer-events: none;
    overflow: hidden;
}

/* Animated Gradient Orbs */
.gradient-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(120px);
}

.orb-1 {
    width: 800px;
    height: 800px;
    background: var(--color-primary);
    top: -300px;
    left: 50%;
    opacity: 0.15;
    animation: float1 20s ease-in-out infinite;
}

.orb-2 {
    width: 600px;
    height: 600px;
    background: #88b0FF;
    bottom: -200px;
    right: -100px;
    opacity: 0.12;
    animation: float2 25s ease-in-out infinite;
}

.orb-3 {
    width: 500px;
    height: 500px;
    background: linear-gradient(135deg, var(--color-primary), #88b0FF);
    bottom: -100px;
    left: -150px;
    opacity: 0.08;
    animation: float3 22s ease-in-out infinite;
}

@keyframes float1 {
    0%, 100% { transform: translateX(-50%) translateY(0); }
    50% { transform: translateX(-50%) translateY(40px); }
}

@keyframes float2 {
    0%, 100% { transform: translateY(0) translateX(0); }
    50% { transform: translateY(-50px) translateX(-30px); }
}

@keyframes float3 {
    0%, 100% { transform: translateY(0) translateX(0); }
    50% { transform: translateY(30px) translateX(20px); }
}

.container {
    max-width: 980px;
    margin: 0 auto;
    padding: 0 24px;
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 800px;
    margin: 0 auto;
    padding: 40px 24px;
    display: flex;
    flex-direction: column;
    align-items: center;
    animation: fadeIn 1s ease-out;
}

/* Brand Name */
.brand-name {
    font-size: 24px;
    font-weight: 500;
    letter-spacing: 0.3em;
    text-transform: uppercase;
    color: var(--color-text-secondary);
    margin-bottom: 20px;
    animation: fadeIn 1s ease-out 0.1s both;
}

/* Main Title */
.hero-title {
    font-size: 80px;
    font-weight: 700;
    line-height: 1.0;
    margin-bottom: 24px;
    letter-spacing: -0.025em;
    animation: fadeIn 1s ease-out 0.2s both;
}

.gradient-text {
    background: linear-gradient(90deg, var(--color-primary) 0%, #88b0FF 50%, var(--color-primary) 100%);
    background-size: 200% auto;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: shimmer 3s linear infinite;
}

@keyframes shimmer {
    0% { background-position: 0% center; }
    100% { background-position: 200% center; }
}

/* Subtitle */
.hero-subtitle {
    font-size: 21px;
    font-weight: 400;
    color: var(--color-text-secondary);
    margin-bottom: 40px;
    animation: fadeIn 1s ease-out 0.3s both;
}

/* Benefits - Minimal Style */
.hero-benefits {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 16px;
    margin-bottom: 48px;
    animation: fadeIn 1s ease-out 0.4s both;
}

.benefit {
    font-size: 15px;
    font-weight: 500;
    color: var(--color-text);
}

.benefit-dot {
    width: 4px;
    height: 4px;
    border-radius: 50%;
    background: var(--color-text-tertiary);
}

/* Download Button */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 18px 36px;
    font-size: 17px;
    font-weight: 500;
    border-radius: 980px;
    transition: all 0.3s cubic-bezier(0.25, 0.1, 0.25, 1);
    animation: fadeIn 1s ease-out 0.5s both;
}

.btn-primary {
    background: var(--color-text);
    color: var(--color-bg);
    position: relative;
}

.btn-primary::before {
    content: '';
    position: absolute;
    inset: -3px;
    border-radius: 980px;
    background: linear-gradient(135deg, var(--color-primary), #88b0FF);
    opacity: 0;
    filter: blur(12px);
    transition: opacity 0.3s ease;
    z-index: -1;
}

.btn-primary:hover {
    transform: scale(1.02);
}

.btn-primary:hover::before {
    opacity: 0.6;
}

/* Meta Info */
.hero-meta {
    margin-top: 20px;
    font-size: 13px;
    font-weight: 500;
    color: var(--color-text-tertiary);
    letter-spacing: 0.02em;
    animation: fadeIn 1s ease-out 0.6s both;
}

.hero-meta-secondary {
    margin-top: 4px;
    font-size: 11px;
    font-weight: 400;
    color: var(--color-text-tertiary);
    opacity: 0.7;
    letter-spacing: 0.01em;
    animation: fadeIn 1s ease-out 0.7s both;
}

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

@media (max-width: 768px) {
    .hero-title { 
        font-size: 52px; 
    }
    
    .brand-name {
        font-size: 20px;
        letter-spacing: 0.25em;
    }
    
    .hero-subtitle {
        font-size: 18px;
    }
    
    .hero-benefits {
        flex-wrap: wrap;
        gap: 12px;
    }
    
    .benefit-dot {
        display: none;
    }
    
    .benefit {
        font-size: 14px;
    }
}

@media (max-width: 480px) {
    .hero-title { 
        font-size: 40px; 
    }
    
    .brand-name {
        font-size: 16px;
    }
    
    .hero-subtitle {
        font-size: 16px;
    }
    
    .btn {
        width: 100%;
        max-width: 280px;
        padding: 16px 32px;
    }
    
    .hero-meta {
        font-size: 12px;
    }
    
    .hero-meta-secondary {
        font-size: 10px;
    }
}

/* Footer */
.site-footer {
    padding: 40px 24px;
    text-align: center;
    border-top: 1px solid #1a1a1a;
}

.site-footer p {
    font-size: 13px;
    color: var(--color-text-tertiary);
}

.site-footer a {
    color: var(--color-text-secondary);
    transition: color 0.2s;
}

.site-footer a:hover,
.site-footer a:focus-visible {
    color: var(--color-text);
    text-decoration: underline;
}

@media (max-width: 480px) {
    .site-footer {
        padding: 32px 24px;
    }
    
    .site-footer p {
        font-size: 12px;
    }
}