/* ============================================================
   public.events — Per-Event Decorative Themes
   Each event host picks a theme; the class is applied to the
   event page wrapper element.
   ============================================================ */

/* ============================================================
   Base Event Page Layout
   ============================================================ */

.event-page {
    --evt-bg: linear-gradient(135deg, #0a0a0f 0%, #111118 100%);
    --evt-text: #eee;
    --evt-font: 'Libre Franklin', system-ui, sans-serif;
    --evt-card-bg: rgba(17, 17, 24, 0.85);
    --evt-btn-bg: oklch(0.55 0.27 280);
    --evt-btn-text: #fff;
    --evt-cover-opacity: 0.4;

    font-family: var(--evt-font);
    color: var(--evt-text);
    min-height: 100vh;
    position: relative;
    overflow-x: hidden;
}

.event-page__bg {
    position: fixed;
    inset: 0;
    z-index: 0;
    background: var(--evt-bg);
    pointer-events: none;
}

.event-page__cover {
    position: absolute;
    inset: 0;
    z-index: 1;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    opacity: var(--evt-cover-opacity);
    pointer-events: none;
}

.event-page__cover::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(
        to bottom,
        transparent 0%,
        rgba(10, 10, 15, 0.6) 50%,
        rgba(10, 10, 15, 0.95) 100%
    );
}

.event-page__content {
    position: relative;
    z-index: 2;
}

.event-page__card {
    background: var(--evt-card-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-radius: 1rem;
    border: 1px solid rgba(255, 255, 255, 0.06);
}

.event-page__btn {
    background: var(--evt-btn-bg);
    color: var(--evt-btn-text);
    border: none;
    border-radius: 0.75rem;
    padding: 0.75rem 1.5rem;
    font-weight: 600;
    cursor: pointer;
    transition: filter 200ms ease, transform 200ms ease;
}

.event-page__btn:hover {
    filter: brightness(1.15);
    transform: translateY(-1px);
}

.event-page__btn:active {
    transform: translateY(0);
}

/* ============================================================
   Theme 1: Default (brand purple)
   ============================================================ */

.event-theme-default {
    --evt-bg: linear-gradient(135deg, #0a0a0f 0%, #15101f 50%, #0a0a0f 100%);
    --evt-text: #ede8f5;
    --evt-font: 'Inter', sans-serif;
    --evt-card-bg: rgba(17, 17, 24, 0.85);
    --evt-btn-bg: oklch(0.55 0.27 280);
    --evt-btn-text: #fff;
}

/* ============================================================
   Theme 2: Sunset
   ============================================================ */

.event-theme-sunset {
    --evt-bg: linear-gradient(135deg, #1a0a0a 0%, #2d1200 30%, #1a0508 70%, #0f0a1a 100%);
    --evt-text: #fde8d8;
    --evt-font: 'Inter', sans-serif;
    --evt-card-bg: rgba(30, 15, 10, 0.85);
    --evt-btn-bg: linear-gradient(135deg, #e05530 0%, #f59e0b 100%);
    --evt-btn-text: #fff;
}

/* ============================================================
   Theme 3: Ocean
   ============================================================ */

.event-theme-ocean {
    --evt-bg: linear-gradient(180deg, #020617 0%, #0c1a3a 40%, #0a2540 70%, #030712 100%);
    --evt-text: #d4e8f7;
    --evt-font: 'Inter', sans-serif;
    --evt-card-bg: rgba(8, 20, 40, 0.85);
    --evt-btn-bg: linear-gradient(135deg, #0ea5e9 0%, #2563eb 100%);
    --evt-btn-text: #fff;
}

/* ============================================================
   Theme 4: Neon
   ============================================================ */

.event-theme-neon {
    --evt-bg: #050505;
    --evt-text: #f0f0f0;
    --evt-font: 'Inter', sans-serif;
    --evt-card-bg: rgba(10, 10, 10, 0.9);
    --evt-btn-bg: #e100ff;
    --evt-btn-text: #fff;
}

.event-theme-neon .event-page__card {
    border-color: rgba(225, 0, 255, 0.2);
    box-shadow: 0 0 30px rgba(225, 0, 255, 0.08), inset 0 0 30px rgba(225, 0, 255, 0.03);
}

.event-theme-neon .event-page__btn {
    box-shadow: 0 0 20px rgba(225, 0, 255, 0.4);
}

.event-theme-neon .event-page__btn:hover {
    box-shadow: 0 0 30px rgba(225, 0, 255, 0.6);
}

/* ============================================================
   Theme 5: Forest
   ============================================================ */

.event-theme-forest {
    --evt-bg: linear-gradient(180deg, #060d06 0%, #0a1a0d 40%, #0d1f10 70%, #050a05 100%);
    --evt-text: #d4e8d6;
    --evt-font: 'Inter', sans-serif;
    --evt-card-bg: rgba(10, 22, 12, 0.85);
    --evt-btn-bg: linear-gradient(135deg, #16a34a 0%, #22c55e 100%);
    --evt-btn-text: #fff;
}

/* ============================================================
   Theme 6: Midnight
   ============================================================ */

.event-theme-midnight {
    --evt-bg: linear-gradient(180deg, #000010 0%, #070720 50%, #000010 100%);
    --evt-text: #c8c8e8;
    --evt-font: 'Inter', sans-serif;
    --evt-card-bg: rgba(7, 7, 25, 0.9);
    --evt-btn-bg: linear-gradient(135deg, #6366f1 0%, #4338ca 100%);
    --evt-btn-text: #fff;
}

.event-theme-midnight .event-page__card {
    border-color: rgba(99, 102, 241, 0.1);
}

/* ============================================================
   Theme 7: Confetti
   ============================================================ */

.event-theme-confetti {
    --evt-bg: linear-gradient(135deg, #0f0a1a 0%, #1a0f2e 50%, #0a0a0f 100%);
    --evt-text: #f5f0ff;
    --evt-font: 'Inter', sans-serif;
    --evt-card-bg: rgba(20, 14, 35, 0.85);
    --evt-btn-bg: linear-gradient(135deg, #ec4899 0%, #a855f7 50%, #6366f1 100%);
    --evt-btn-text: #fff;
}

/* Confetti particles — CSS-only */
.event-theme-confetti .event-page__bg::before,
.event-theme-confetti .event-page__bg::after {
    content: '';
    position: absolute;
    top: -10%;
    width: 100%;
    height: 120%;
    pointer-events: none;
    background-image:
        radial-gradient(3px 3px at 10% 15%, #ec4899 50%, transparent 55%),
        radial-gradient(2px 4px at 20% 35%, #a855f7 50%, transparent 55%),
        radial-gradient(3px 2px at 35% 10%, #6366f1 50%, transparent 55%),
        radial-gradient(2px 3px at 45% 55%, #f59e0b 50%, transparent 55%),
        radial-gradient(4px 2px at 55% 25%, #22c55e 50%, transparent 55%),
        radial-gradient(2px 3px at 65% 45%, #ec4899 50%, transparent 55%),
        radial-gradient(3px 2px at 75% 20%, #0ea5e9 50%, transparent 55%),
        radial-gradient(2px 4px at 85% 60%, #f59e0b 50%, transparent 55%),
        radial-gradient(3px 3px at 90% 30%, #a855f7 50%, transparent 55%),
        radial-gradient(2px 2px at 5% 70%, #22c55e 50%, transparent 55%),
        radial-gradient(3px 3px at 30% 80%, #0ea5e9 50%, transparent 55%),
        radial-gradient(2px 3px at 50% 5%, #ec4899 50%, transparent 55%),
        radial-gradient(4px 2px at 70% 75%, #6366f1 50%, transparent 55%),
        radial-gradient(2px 4px at 80% 10%, #22c55e 50%, transparent 55%);
    animation: confetti-fall 12s linear infinite;
    opacity: 0.7;
}

.event-theme-confetti .event-page__bg::after {
    background-image:
        radial-gradient(2px 3px at 12% 40%, #f59e0b 50%, transparent 55%),
        radial-gradient(3px 2px at 22% 60%, #22c55e 50%, transparent 55%),
        radial-gradient(2px 4px at 38% 20%, #0ea5e9 50%, transparent 55%),
        radial-gradient(4px 2px at 48% 75%, #ec4899 50%, transparent 55%),
        radial-gradient(2px 3px at 58% 50%, #a855f7 50%, transparent 55%),
        radial-gradient(3px 2px at 68% 30%, #f59e0b 50%, transparent 55%),
        radial-gradient(2px 4px at 78% 65%, #6366f1 50%, transparent 55%),
        radial-gradient(3px 3px at 88% 15%, #22c55e 50%, transparent 55%),
        radial-gradient(2px 2px at 95% 50%, #ec4899 50%, transparent 55%),
        radial-gradient(3px 3px at 8% 85%, #0ea5e9 50%, transparent 55%),
        radial-gradient(2px 3px at 42% 90%, #a855f7 50%, transparent 55%),
        radial-gradient(4px 2px at 62% 8%, #f59e0b 50%, transparent 55%);
    animation-delay: -6s;
    animation-duration: 16s;
    opacity: 0.5;
}

@keyframes confetti-fall {
    0% {
        transform: translateY(-10%) rotate(0deg);
    }
    100% {
        transform: translateY(100%) rotate(15deg);
    }
}

/* ============================================================
   Theme 8: Retro
   ============================================================ */

.event-theme-retro {
    --evt-bg: linear-gradient(180deg, #1a0a0a 0%, #1f0f0a 50%, #0f0a05 100%);
    --evt-text: #f5e6d0;
    --evt-font: 'Georgia', 'Times New Roman', serif;
    --evt-card-bg: rgba(30, 18, 10, 0.85);
    --evt-btn-bg: #c2410c;
    --evt-btn-text: #fff;
}

.event-theme-retro .event-page__card {
    border-color: rgba(194, 65, 12, 0.15);
    border-radius: 0.375rem;
}

.event-theme-retro .event-page__btn {
    border-radius: 0.375rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    font-size: 0.875rem;
}

/* ============================================================
   Theme 9: Minimal
   ============================================================ */

.event-theme-minimal {
    --evt-bg: #0a0a0a;
    --evt-text: #d4d4d4;
    --evt-font: 'Inter', sans-serif;
    --evt-card-bg: rgba(20, 20, 20, 0.9);
    --evt-btn-bg: #fff;
    --evt-btn-text: #0a0a0a;
}

.event-theme-minimal .event-page__card {
    border-color: rgba(255, 255, 255, 0.08);
    box-shadow: none;
}

.event-theme-minimal .event-page__btn {
    border-radius: 9999px;
    font-weight: 500;
}

/* ============================================================
   Theme 10: Holographic
   ============================================================ */

.event-theme-holographic {
    --evt-bg: linear-gradient(135deg, #050510 0%, #0a0520 50%, #100510 100%);
    --evt-text: #f0eaff;
    --evt-font: 'Inter', sans-serif;
    --evt-card-bg: rgba(12, 8, 25, 0.85);
    --evt-btn-bg: linear-gradient(135deg, #a855f7 0%, #06b6d4 33%, #ec4899 66%, #a855f7 100%);
    --evt-btn-text: #fff;
    background-size: 300% 300%;
}

.event-theme-holographic .event-page__card {
    border-color: transparent;
    background-image: linear-gradient(var(--evt-card-bg), var(--evt-card-bg)),
                      linear-gradient(135deg, rgba(168, 85, 247, 0.2), rgba(6, 182, 212, 0.2), rgba(236, 72, 153, 0.2));
    background-origin: border-box;
    background-clip: padding-box, border-box;
    border: 1px solid transparent;
}

.event-theme-holographic .event-page__bg::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(
        135deg,
        rgba(168, 85, 247, 0.06) 0%,
        rgba(6, 182, 212, 0.06) 25%,
        rgba(236, 72, 153, 0.06) 50%,
        rgba(168, 85, 247, 0.06) 75%,
        rgba(6, 182, 212, 0.06) 100%
    );
    background-size: 400% 400%;
    animation: holographic-shimmer 8s ease-in-out infinite;
    pointer-events: none;
}

.event-theme-holographic .event-page__btn {
    background-size: 300% 100%;
    animation: holographic-shimmer-btn 4s ease-in-out infinite;
}

@keyframes holographic-shimmer {
    0%, 100% {
        background-position: 0% 50%;
    }
    25% {
        background-position: 100% 0%;
    }
    50% {
        background-position: 100% 100%;
    }
    75% {
        background-position: 0% 100%;
    }
}

@keyframes holographic-shimmer-btn {
    0%, 100% {
        background-position: 0% 50%;
    }
    50% {
        background-position: 100% 50%;
    }
}

/* ============================================================
   Reduced Motion — Disable all theme animations
   ============================================================ */

@media (prefers-reduced-motion: reduce) {
    .event-theme-confetti .event-page__bg::before,
    .event-theme-confetti .event-page__bg::after {
        animation: none;
        opacity: 0.3;
    }

    .event-theme-holographic .event-page__bg::before {
        animation: none;
    }

    .event-theme-holographic .event-page__btn {
        animation: none;
    }

    .event-page__btn {
        transition: none;
    }
}