/* 
   Modern CSS Reset & Base Foundation 
   A minimalist, premium stylesheet for static websites.
*/

:root {
    /* Color Palette */
    --bg-color: #0c0c0c;
    --surface-color: #161616;
    --text-primary: #ffffff;
    --text-secondary: #a0a0a0;
    --accent: #3b82f6;
    --accent-hover: #2563eb;
    --border: rgba(255, 255, 255, 0.1);

    /* Spacing & Sizing */
    --space-xs: 0.5rem;
    --space-sm: 1rem;
    --space-md: 2rem;
    --space-lg: 4rem;
    --border-radius: 16px;

    /* Typography */
    --font-family: 'Outfit', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

/* 1. Modern Reset */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

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

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

/* 2. Layout & Container */
.app-container {
    display: flex;
    justify-content: center;
    align-items: center;
    padding: var(--space-md);
    min-height: 100vh;
    background: radial-gradient(circle at top left, #1a1a1a, #0c0c0c);
}

.content-wrapper {
    width: 100%;
    max-width: 600px;
    text-align: center;
}

/* 3. Typography Styles */
h1 {
    font-size: clamp(2.5rem, 8vw, 4rem);
    font-weight: 600;
    letter-spacing: -0.02em;
    margin-bottom: var(--space-xs);
    background: linear-gradient(135deg, #fff 0%, #a0a0a0 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.subtitle {
    font-size: 1.125rem;
    color: var(--text-secondary);
    margin-bottom: var(--space-lg);
}

h2 {
    font-size: 1.5rem;
    margin-bottom: var(--space-sm);
}

/* 4. Card Component (Glassmorphism) */
.card {
    background: var(--surface-color);
    border: 1px solid var(--border);
    border-radius: var(--border-radius);
    padding: var(--space-md);
    margin-bottom: var(--space-lg);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(10px);
    transition: transform 0.3s ease, border-color 0.3s ease;
}

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

/* 5. Interactive Elements */
.actions {
    display: flex;
    gap: var(--space-sm);
    justify-content: center;
    margin-top: var(--space-md);
}

button {
    font-family: inherit;
    font-size: 1rem;
    font-weight: 500;
    padding: 0.75rem 1.5rem;
    border-radius: 12px;
    cursor: pointer;
    transition: all 0.2s ease;
    border: none;
}

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

.primary-btn:hover {
    background-color: #e0e0e0;
    transform: scale(1.02);
}

.secondary-btn {
    background-color: transparent;
    color: var(--text-primary);
    border: 1px solid var(--border);
}

.secondary-btn:hover {
    background-color: rgba(255, 255, 255, 0.05);
    border-color: var(--text-secondary);
}

/* 6. Animations */
.fade-in {
    opacity: 0;
    transform: translateY(20px);
    animation: fadeInUp 0.8s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.fade-in:nth-child(1) {
    animation-delay: 0.1s;
}

.fade-in:nth-child(2) {
    animation-delay: 0.2s;
}

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

/* 7. Footer */
footer {
    font-size: 0.875rem;
    color: var(--text-secondary);
    opacity: 0.6;
}

/* Mobile Optimizations */
@media (max-width: 480px) {
    .actions {
        flex-direction: column;
    }

    .card {
        padding: var(--space-sm);
    }
}