:root {
    --bg-color: #0f172a;
    --text-color: #e2e8f0;
    --accent-color: #38bdf8;
    --secondary-accent: #818cf8;
    --glass-bg: rgba(30, 41, 59, 0.7);
    --glass-border: rgba(148, 163, 184, 0.1);
    --font-primary: 'Inter', sans-serif;
    --font-mono: 'JetBrains Mono', monospace;
}

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

body {
    background-color: var(--bg-color);
    color: var(--text-color);
    font-family: var(--font-primary);
    line-height: 1.6;
    overflow-x: hidden;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
    width: 100%;
}

header {
    padding: 2rem 0;
    text-align: center;
}

.hero {
    min-height: 60vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    position: relative;
    padding: 4rem 0;
}

.hero::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 600px;
    height: 600px;
    max-width: 100vw;
    background: radial-gradient(circle, rgba(56, 189, 248, 0.15) 0%, rgba(15, 23, 42, 0) 70%);
    z-index: -1;
    pointer-events: none;
}

h1 {
    font-size: clamp(2rem, 5vw, 4.5rem);
    font-weight: 800;
    background: linear-gradient(135deg, var(--text-color) 0%, var(--accent-color) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 1rem;
    letter-spacing: -0.02em;
    padding: 0 1rem;
}

.subtitle {
    font-size: clamp(1.1rem, 2vw, 1.5rem);
    color: #94a3b8;
    margin-bottom: 3rem;
    padding: 0 1rem;
}

/* Countdown Styles */
.countdown-container {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
    margin-bottom: 4rem;
    width: 100%;
    max-width: 800px;
}

.time-unit {
    background: var(--glass-bg);
    backdrop-filter: blur(12px);
    border: 1px solid var(--glass-border);
    border-radius: 16px;
    padding: 2rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease;
}

.time-unit:hover {
    transform: translateY(-5px);
}

.number {
    font-family: var(--font-mono);
    font-size: clamp(2rem, 4vw, 4rem);
    font-weight: 700;
    color: var(--accent-color);
    line-height: 1;
    margin-bottom: 0.5rem;
}

.label {
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: #94a3b8;
}

/* Content Sections */
section {
    padding: 4rem 0;
}

.glass-card {
    background: var(--glass-bg);
    backdrop-filter: blur(12px);
    border: 1px solid var(--glass-border);
    border-radius: 24px;
    padding: 3rem;
    margin-bottom: 2rem;
}

h2 {
    font-size: 2rem;
    margin-bottom: 1.5rem;
    color: var(--text-color);
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

h2::before {
    content: '//';
    color: var(--accent-color);
    font-family: var(--font-mono);
}

p,
li {
    font-size: 1.125rem;
    color: #cbd5e1;
    margin-bottom: 1rem;
}

ul {
    list-style: none;
    padding-left: 1rem;
}

li {
    position: relative;
    padding-left: 1.5rem;
}

li::before {
    content: '>';
    color: var(--secondary-accent);
    position: absolute;
    left: 0;
    font-family: var(--font-mono);
    font-weight: bold;
}

footer {
    margin-top: auto;
    padding: 2rem 0;
    text-align: center;
    color: #64748b;
    font-family: var(--font-mono);
    font-size: 0.875rem;
    border-top: 1px solid var(--glass-border);
}

@media (max-width: 768px) {
    .countdown-container {
        grid-template-columns: repeat(2, 1fr);
        gap: 1rem;
    }

    .time-unit {
        padding: 1rem;
    }

    .number {
        font-size: 2rem;
    }

    .glass-card {
        padding: 1.5rem;
    }
}

/* Date Display */
.date-display {
    font-size: clamp(1.25rem, 3vw, 2rem);
    font-weight: 600;
    color: var(--secondary-accent);
    margin-bottom: 2rem;
    font-family: var(--font-mono);
    text-shadow: 0 0 10px rgba(129, 140, 248, 0.3);
    animation: fadeIn 1s ease-out;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }

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

/* Install Button */
.install-btn {
    background: var(--glass-bg);
    border: 1px solid var(--accent-color);
    color: var(--accent-color);
    padding: 0.75rem 1.5rem;
    border-radius: 9999px;
    font-family: var(--font-primary);
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    backdrop-filter: blur(12px);
}

.install-btn:hover {
    background: var(--accent-color);
    color: var(--bg-color);
    box-shadow: 0 0 15px rgba(56, 189, 248, 0.5);
}

.install-btn[hidden] {
    display: none;
}