/* ==========================================================================
   THEME STYLING FRAMEWORK - LIGHT MODE (DEFAULT)
   ========================================================================== */
:root {
    --bg-main: #f4f6f9;
    --bg-glass: rgba(255, 255, 255, 0.45);
    --border-glass: rgba(255, 255, 255, 0.25);
    --charcoal-dark: #1e2229;
    --silver-text: #6c757d;
    --accent-pink: #ff1493;
}

/* ==========================================================================
   THEME STYLING FRAMEWORK - PREMIUM GLASSMORPHIC DARK MODE
   ========================================================================== */
[data-theme="dark"] {
    --bg-main: #0b0f19;
    --bg-glass: rgba(15, 23, 42, 0.45);
    --border-glass: rgba(255, 255, 255, 0.08);
    --charcoal-dark: #f8fafc;
    --silver-text: #94a3b8;
    --accent-pink: #ff1493;
}

/* ==========================================================================
   CORE LAYOUT & UTILITY DEFINITIONS
   ========================================================================== */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    background-color: var(--bg-main);
    color: var(--charcoal-dark);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    min-height: 100vh;
    transition: background-color 0.3s ease, color 0.3s ease;
}

/* Premium Glassmorphism Container Class */
.glass-panel {
    background: var(--bg-glass);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--border-glass);
    border-radius: 12px;
    box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.05);
    transition: background 0.3s ease, border-color 0.3s ease;
}

/* Header Component Framing */
.app-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1280px;
    width: calc(100% - 40px);
    margin: 20px auto;
    padding: 15px 30px;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 20px;
}

.nav-links a {
    color: var(--charcoal-dark);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.9rem;
    transition: color 0.2s ease;
}

.nav-links a:hover, .nav-links a.active {
    color: var(--accent-pink);
}

/* Interactive Utility Components */
.btn-premium {
    background: var(--accent-pink);
    color: #ffffff !important;
    border: none;
    padding: 10px 20px;
    border-radius: 6px;
    font-weight: 600;
    cursor: pointer;
    text-decoration: none;
    display: inline-block;
    transition: transform 0.2s ease, opacity 0.2s ease;
}

.btn-premium:hover {
    opacity: 0.9;
    transform: translateY(-1px);
}

.btn-secondary {
    background: transparent;
    border: 1px solid var(--border-glass);
    color: var(--charcoal-dark) !important;
}

.theme-switch {
    background: transparent;
    border: 1px solid var(--border-glass);
    cursor: pointer;
    font-size: 1.1rem;
    padding: 6px 10px;
    border-radius: 6px;
    color: var(--charcoal-dark);
    transition: background 0.2s ease;
}

.theme-switch:hover {
    background: rgba(255, 255, 255, 0.1);
}

/* Main Content Structural Components */
.hero-section {
    max-width: 1280px;
    width: calc(100% - 40px);
    margin: 60px auto;
    text-align: center;
    padding: 40px 20px;
}

.hero-badge {
    background: rgba(255, 20, 147, 0.1);
    color: var(--accent-pink);
    display: inline-block;
    padding: 6px 16px;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 1px;
    text-transform: uppercase;
    margin-bottom: 20px;
}

.hero-title {
    font-size: 2.8rem;
    font-weight: 800;
    line-height: 1.2;
    max-width: 800px;
    margin: 0 auto;
}

.hero-title span {
    color: var(--accent-pink);
}