/* ══════════════════════════════════════════════════════════════════════════
 * LUMINA CORE THEME & DESIGN TOKENS
 * ══════════════════════════════════════════════════════════════════════════ */

:root {
    --bg-base: #090d1a;
    --bg-surface: #0b1838;
    --bg-card: rgba(18, 26, 47, 0.92);
    --bg-card-hover: rgba(26, 38, 68, 0.98);
    --border-glass: rgba(255, 255, 255, 0.12);
    --border-glass-glow: rgba(168, 85, 247, 0.45);
    
    --text-primary: #ffffff;
    --text-secondary: #cbd5e1;
    --text-muted: #94a3b8;
    
    --accent-gold: #f59e0b;
    --accent-pink: #ec4899;
    --accent-purple: #a855f7;
    --accent-cyan: #38bdf8;
    --accent-blue: #2563eb;
    --accent-green: #10b981;
    --accent-red: #e11d48;
    
    --radius-sm: 8px;
    --radius-md: 14px;
    --radius-lg: 20px;
    --radius-full: 9999px;
    
    --font-heading: 'Outfit', 'Plus Jakarta Sans', sans-serif;
    --font-body: 'Plus Jakarta Sans', sans-serif;
}

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

body {
    font-family: var(--font-body);
    background: var(--bg-base);
    color: var(--text-primary);
    min-height: 100vh;
    overflow-x: hidden;
    background-image: 
        radial-gradient(ellipse at 15% 10%, rgba(168, 85, 247, 0.14) 0%, transparent 50%),
        radial-gradient(ellipse at 85% 25%, rgba(236, 72, 153, 0.12) 0%, transparent 55%),
        radial-gradient(ellipse at 50% 80%, rgba(56, 189, 248, 0.10) 0%, transparent 60%);
    background-attachment: fixed;
    line-height: 1.5;
}

/* ── Toast Notifications ── */
.toast {
    position: fixed;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%) translateY(100px);
    background: linear-gradient(135deg, rgba(30, 27, 75, 0.95), rgba(15, 23, 42, 0.95));
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    color: #fff;
    padding: 14px 28px;
    border-radius: 40px;
    font-weight: 800;
    font-size: 0.90rem;
    box-shadow: 0 12px 30px rgba(0, 0, 0, 0.7), 0 0 24px rgba(245, 158, 11, 0.35), inset 0 2px 4px rgba(255, 255, 255, 0.15);
    border: 1.5px solid rgba(245, 158, 11, 0.5);
    border-bottom: 3px solid rgba(180, 83, 9, 0.8);
    display: flex;
    align-items: center;
    gap: 12px;
    z-index: 999999999 !important;
    opacity: 0;
    visibility: hidden;
    transition: all 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
    pointer-events: none;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.5);
}
.toast i {
    color: #facc15;
    font-size: 1.1rem;
    filter: drop-shadow(0 0 4px rgba(250, 204, 21, 0.6));
}
.toast.show {
    transform: translateX(-50%) translateY(0) scale(1.02);
    opacity: 1;
    visibility: visible;
}

/* ── Scroll To Top Button ── */
.lumina-scroll-top-btn {
    position: fixed;
    bottom: 24px;
    right: 24px;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: linear-gradient(135deg, #a855f7, #ec4899);
    color: #fff;
    border: 2px solid rgba(255, 255, 255, 0.7);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.6), 0 0 20px rgba(168, 85, 247, 0.6);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    cursor: pointer;
    z-index: 99999;
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transform: translateY(20px) scale(0.85);
    transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
    backdrop-filter: blur(12px);
}
.lumina-scroll-top-btn.visible {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    transform: translateY(0) scale(1);
}
.lumina-scroll-top-btn:hover {
    transform: translateY(-4px) scale(1.08);
    box-shadow: 0 12px 28px rgba(168, 85, 247, 0.65), 0 0 20px rgba(245, 158, 11, 0.55);
}