/* Shared: background pattern + age gate */
#pattern-bg {
            position: fixed;
            top: 0;
            left: 0;
            width: 100vw;
            height: 100vh;
            z-index: -1;
            pointer-events: none;
            opacity: 0.18;
        }

#age-modal-overlay {
            position: fixed;
            inset: 0;
            z-index: 10000;
            background: rgba(15, 23, 42, 0.88);
            backdrop-filter: blur(8px);
            display: none;
            align-items: center;
            justify-content: center;
            padding: 1.5rem;
        }

.age-modal {
            background: var(--white);
            max-width: 440px;
            width: 100%;
            padding: 2.2rem;
            border-radius: 24px;
            text-align: center;
            box-shadow: 0 20px 40px rgba(0, 0, 0, 0.25);
            border: 2px solid var(--primary-light);
        }

.age-modal-title {
            font-size: 1.8rem;
            color: var(--text-dark);
            margin-bottom: 0.75rem;
        }

.age-modal-desc {
            color: var(--text-muted);
            font-size: 0.95rem;
            margin-bottom: 1.75rem;
            font-weight: 600;
            line-height: 1.5;
        }

.age-btn-group {
            display: flex;
            gap: 0.75rem;
            justify-content: center;
        }

.age-btn-yes {
            background: var(--accent);
            color: var(--white);
            border: none;
            padding: 0.8rem 1.5rem;
            border-radius: 30px;
            font-weight: 800;
            cursor: pointer;
            font-size: 0.95rem;
            transition: transform 0.15s ease, background 0.15s ease;
        }

.age-btn-yes:hover {
            background: var(--accent-dark);
            transform: translateY(-2px);
        }

.age-btn-no {
            background: var(--bg-base);
            color: var(--text-dark);
            border: 2px solid var(--primary-light);
            padding: 0.8rem 1.2rem;
            border-radius: 30px;
            font-weight: 800;
            cursor: pointer;
            font-size: 0.95rem;
            transition: border-color 0.15s ease, color 0.15s ease;
        }

.age-btn-no:hover {
            border-color: var(--primary);
            color: var(--primary);
        }