/* ============================================
   🎉 Festival Auto-Theme System
   ============================================
   Themes change automatically based on date:
   - New Year (Dec 30 – Jan 5)
   - Valentine's Day (Feb 10 – Feb 17)
   - Songkran (Apr 11 – Apr 16)
   - Halloween (Oct 25 – Nov 1)
   - Loy Krathong (Nov 1 – Nov 20)
   - Christmas (Dec 20 – Dec 29)
   ============================================ */

/* Festival Banner */
.festival-banner {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 50;
    padding: 10px 20px;
    text-align: center;
    font-size: 0.9rem;
    font-weight: 600;
    font-family: 'Inter', sans-serif;
    letter-spacing: 0.02em;
    animation: bannerGlow 3s ease-in-out infinite alternate;
}

@keyframes bannerGlow {
    0% { opacity: 0.85; }
    100% { opacity: 1; }
}

.festival-banner + .container {
    padding-top: 50px;
}

/* Floating particles container */
#festival-particles {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 0;
    overflow: hidden;
}

#festival-particles .particle {
    position: absolute;
    animation: particleFall linear infinite;
    pointer-events: none;
    user-select: none;
    font-size: 1.4rem;
    filter: drop-shadow(0 0 8px rgba(255, 215, 0, 0.6));
    will-change: transform, opacity;
    transform: translateZ(0);
}

#festival-particles .particle.small { font-size: 1rem; }
#festival-particles .particle.medium { font-size: 1.4rem; }
#festival-particles .particle.large { font-size: 2rem; filter: drop-shadow(0 0 14px rgba(255, 215, 0, 0.85)); }

@keyframes particleFall {
    0% {
        transform: translateY(-20px) rotate(0deg) scale(1);
        opacity: 1;
    }
    70% {
        opacity: 0.85;
    }
    100% {
        transform: translateY(calc(100vh + 40px)) rotate(360deg) scale(0.6);
        opacity: 0;
    }
}

/* ============ 👑 ROYAL PRINCE THEME 👑 ============ */
body.theme-prince,
body.festival-prince {
    background-color: #060417;
    --accent-primary: #ffd700;
    --accent-secondary: #a855f7;
    --accent-gradient: linear-gradient(135deg, #fff3a1 0%, #ffd700 35%, #c084fc 70%, #7e22ce 100%);
    --border-color: rgba(255, 215, 0, 0.28);
    --border-active: #ffd700;
    --text-secondary: #ffe4a0;
    --text-muted: #d8b4fe;
    --shadow-glow: 0 0 45px rgba(255, 215, 0, 0.35);
}

body.theme-prince::before,
body.festival-prince::before {
    background-color: #060417;
    background-image:
        radial-gradient(at 15% 15%, rgba(255, 215, 0, 0.2) 0%, transparent 45%),
        radial-gradient(at 85% 10%, rgba(168, 85, 247, 0.22) 0%, transparent 50%),
        radial-gradient(at 45% 75%, rgba(255, 223, 0, 0.15) 0%, transparent 50%),
        radial-gradient(at 90% 90%, rgba(147, 51, 234, 0.2) 0%, transparent 50%),
        radial-gradient(at 50% 30%, rgba(56, 189, 248, 0.12) 0%, transparent 60%);
}

.festival-prince .festival-banner {
    background: linear-gradient(135deg, rgba(255, 215, 0, 0.3), rgba(168, 85, 247, 0.3));
    color: #ffd700;
    border-bottom: 1px solid rgba(255, 215, 0, 0.4);
    box-shadow: 0 4px 20px rgba(255, 215, 0, 0.25);
}

/* ============ NEW YEAR THEME ============ */
body.festival-newyear::before {
    background-color: #0a0520;
    background-image:
        radial-gradient(at 15% 20%, rgba(255, 215, 0, 0.2) 0%, transparent 50%),
        radial-gradient(at 80% 10%, rgba(255, 140, 0, 0.15) 0%, transparent 50%),
        radial-gradient(at 40% 80%, rgba(255, 223, 0, 0.12) 0%, transparent 50%),
        radial-gradient(at 90% 90%, rgba(255, 69, 0, 0.1) 0%, transparent 50%);
}

body.festival-newyear {
    background-color: #0a0520;
    --accent-primary: #ffd700;
    --accent-secondary: #ff8c00;
    --accent-gradient: linear-gradient(135deg, #ffd700 0%, #ff8c00 50%, #ff4500 100%);
    --border-color: rgba(255, 215, 0, 0.15);
    --border-active: rgba(255, 215, 0, 0.6);
    --text-secondary: #ffe4a0;
    --text-muted: #d4a017;
    --shadow-glow: 0 0 40px rgba(255, 215, 0, 0.2);
}

.festival-newyear .festival-banner {
    background: linear-gradient(135deg, rgba(255, 215, 0, 0.2), rgba(255, 140, 0, 0.2));
    color: #ffd700;
    border-bottom: 1px solid rgba(255, 215, 0, 0.2);
}

/* ============ VALENTINE THEME ============ */
body.festival-valentine::before {
    background-color: #0f0515;
    background-image:
        radial-gradient(at 10% 20%, rgba(255, 105, 180, 0.2) 0%, transparent 50%),
        radial-gradient(at 80% 15%, rgba(255, 20, 147, 0.15) 0%, transparent 50%),
        radial-gradient(at 40% 80%, rgba(219, 112, 147, 0.12) 0%, transparent 50%),
        radial-gradient(at 90% 90%, rgba(255, 182, 193, 0.1) 0%, transparent 50%);
}

body.festival-valentine {
    background-color: #0f0515;
    --accent-primary: #ff69b4;
    --accent-secondary: #ff1493;
    --accent-gradient: linear-gradient(135deg, #ff69b4 0%, #ff1493 50%, #c71585 100%);
    --border-color: rgba(255, 105, 180, 0.15);
    --border-active: rgba(255, 105, 180, 0.6);
    --text-secondary: #ffc0cb;
    --text-muted: #ff69b4;
    --shadow-glow: 0 0 40px rgba(255, 105, 180, 0.2);
}

.festival-valentine .festival-banner {
    background: linear-gradient(135deg, rgba(255, 105, 180, 0.2), rgba(255, 20, 147, 0.2));
    color: #ff69b4;
    border-bottom: 1px solid rgba(255, 105, 180, 0.2);
}

/* ============ SONGKRAN THEME ============ */
body.festival-songkran::before {
    background-color: #020d1a;
    background-image:
        radial-gradient(at 10% 25%, rgba(0, 191, 255, 0.2) 0%, transparent 50%),
        radial-gradient(at 85% 10%, rgba(30, 144, 255, 0.15) 0%, transparent 50%),
        radial-gradient(at 40% 80%, rgba(0, 255, 255, 0.12) 0%, transparent 50%),
        radial-gradient(at 90% 85%, rgba(64, 224, 208, 0.1) 0%, transparent 50%);
}

body.festival-songkran {
    background-color: #020d1a;
    --accent-primary: #00bfff;
    --accent-secondary: #1e90ff;
    --accent-gradient: linear-gradient(135deg, #00bfff 0%, #1e90ff 50%, #00ced1 100%);
    --border-color: rgba(0, 191, 255, 0.15);
    --border-active: rgba(0, 191, 255, 0.6);
    --text-secondary: #b0e0e6;
    --text-muted: #4fc3f7;
    --shadow-glow: 0 0 40px rgba(0, 191, 255, 0.2);
}

.festival-songkran .festival-banner {
    background: linear-gradient(135deg, rgba(0, 191, 255, 0.2), rgba(30, 144, 255, 0.2));
    color: #00bfff;
    border-bottom: 1px solid rgba(0, 191, 255, 0.2);
}

/* ============ HALLOWEEN THEME ============ */
body.festival-halloween::before {
    background-color: #0a0506;
    background-image:
        radial-gradient(at 10% 20%, rgba(255, 140, 0, 0.2) 0%, transparent 50%),
        radial-gradient(at 85% 15%, rgba(148, 0, 211, 0.2) 0%, transparent 50%),
        radial-gradient(at 35% 80%, rgba(255, 69, 0, 0.12) 0%, transparent 50%),
        radial-gradient(at 90% 90%, rgba(138, 43, 226, 0.1) 0%, transparent 50%);
}

body.festival-halloween {
    background-color: #0a0506;
    --accent-primary: #ff8c00;
    --accent-secondary: #9400d3;
    --accent-gradient: linear-gradient(135deg, #ff8c00 0%, #ff4500 40%, #9400d3 100%);
    --border-color: rgba(255, 140, 0, 0.15);
    --border-active: rgba(255, 140, 0, 0.6);
    --text-secondary: #ffc966;
    --text-muted: #ff8c00;
    --shadow-glow: 0 0 40px rgba(255, 140, 0, 0.25);
}

.festival-halloween .festival-banner {
    background: linear-gradient(135deg, rgba(255, 140, 0, 0.2), rgba(148, 0, 211, 0.2));
    color: #ff8c00;
    border-bottom: 1px solid rgba(255, 140, 0, 0.2);
}

/* ============ LOY KRATHONG THEME ============ */
body.festival-loykrathong::before {
    background-color: #051008;
    background-image:
        radial-gradient(at 10% 25%, rgba(255, 183, 77, 0.2) 0%, transparent 50%),
        radial-gradient(at 80% 15%, rgba(255, 235, 59, 0.15) 0%, transparent 50%),
        radial-gradient(at 40% 80%, rgba(255, 152, 0, 0.12) 0%, transparent 50%),
        radial-gradient(at 90% 85%, rgba(76, 175, 80, 0.1) 0%, transparent 50%);
}

body.festival-loykrathong {
    background-color: #051008;
    --accent-primary: #ffb74d;
    --accent-secondary: #ffeb3b;
    --accent-gradient: linear-gradient(135deg, #ffb74d 0%, #ff9800 40%, #ffeb3b 100%);
    --border-color: rgba(255, 183, 77, 0.15);
    --border-active: rgba(255, 183, 77, 0.6);
    --text-secondary: #ffe0b2;
    --text-muted: #ffb74d;
    --shadow-glow: 0 0 40px rgba(255, 183, 77, 0.2);
}

.festival-loykrathong .festival-banner {
    background: linear-gradient(135deg, rgba(255, 183, 77, 0.2), rgba(255, 235, 59, 0.15));
    color: #ffb74d;
    border-bottom: 1px solid rgba(255, 183, 77, 0.2);
}

/* ============ CHRISTMAS THEME ============ */
body.festival-christmas::before {
    background-color: #060210;
    background-image:
        radial-gradient(at 10% 20%, rgba(220, 20, 60, 0.2) 0%, transparent 50%),
        radial-gradient(at 85% 15%, rgba(34, 139, 34, 0.15) 0%, transparent 50%),
        radial-gradient(at 40% 80%, rgba(255, 215, 0, 0.12) 0%, transparent 50%),
        radial-gradient(at 90% 85%, rgba(220, 20, 60, 0.1) 0%, transparent 50%);
}

body.festival-christmas {
    background-color: #060210;
    --accent-primary: #dc143c;
    --accent-secondary: #228b22;
    --accent-gradient: linear-gradient(135deg, #dc143c 0%, #228b22 50%, #ffd700 100%);
    --border-color: rgba(220, 20, 60, 0.15);
    --border-active: rgba(220, 20, 60, 0.6);
    --text-secondary: #ffccd5;
    --text-muted: #dc143c;
    --shadow-glow: 0 0 40px rgba(220, 20, 60, 0.2);
}

.festival-christmas .festival-banner {
    background: linear-gradient(135deg, rgba(220, 20, 60, 0.2), rgba(34, 139, 34, 0.15));
    color: #dc143c;
    border-bottom: 1px solid rgba(220, 20, 60, 0.2);
}

/* ============ Particle size variations ============ */
#festival-particles .particle.small { font-size: 0.7rem; }
#festival-particles .particle.medium { font-size: 1.1rem; }
#festival-particles .particle.large { font-size: 1.6rem; }

/* ============ Responsive ============ */
@media (max-width: 768px) {
    .festival-banner {
        font-size: 0.78rem;
        padding: 8px 12px;
    }
    #festival-particles .particle {
        font-size: 0.9rem;
    }
    #festival-particles .particle.large {
        font-size: 1.2rem;
    }
}