.countdown-display {
            background: linear-gradient(145deg, #f0f2f5 0%, #ffffff 100%);
            border-radius: 32px;
            padding: 2rem 1rem;
            margin: 1.5rem 0;
            text-align: center;
            box-shadow: 0 8px 20px rgba(0,0,0,0.05);
        }
        .time-unit {
            display: inline-block;
            min-width: 90px;
            background: #1e2a3e;
            color: white;
            border-radius: 24px;
            padding: 0.8rem 0.5rem;
            margin: 0 0.5rem;
            box-shadow: 0 6px 12px rgba(0,0,0,0.1);
        }
        .time-number {
            font-size: 3.2rem;
            font-weight: 800;
            line-height: 1;
            font-family: 'Courier New', 'JetBrains Mono', monospace;
            letter-spacing: 2px;
        }
        .time-label {
            font-size: 0.85rem;
            text-transform: uppercase;
            letter-spacing: 1px;
            opacity: 0.9;
        }
        .event-title {
            font-size: 1.7rem;
            font-weight: 600;
            margin-bottom: 0.5rem;
            color: #0a2b3e;
        }
        .progress {
            height: 10px;
            border-radius: 10px;
            margin: 1.8rem auto;
            max-width: 90%;
            background-color: #e0e4e8;
        }
        .progress-bar {
            background-color: #2c7da0;
            border-radius: 10px;
            transition: width 0.25s ease;
        }
        .timer-ended {
            background: #d4edda;
            border-radius: 28px;
            padding: 1.8rem;
            color: #155724;
        }
        .input-group-custom {
            background: #f8fafc;
            border-radius: 20px;
            padding: 1rem;
            margin-bottom: 1rem;
        }
        .preset-buttons .btn-outline {
            border: 1px solid #cbd5e1;
            background: white;
            transition: all 0.2s;
        }
        .preset-buttons .btn-outline:hover {
            background: #eef2ff;
            border-color: #2c7da0;
        }
        @media (max-width: 650px) {
            .time-unit { min-width: 65px; margin: 0 0.2rem; }
            .time-number { font-size: 2rem; }
        }
        @media (max-width: 480px) {
            .time-unit { min-width: 58px; padding: 0.5rem 0.2rem; }
            .time-number { font-size: 1.6rem; }
            .time-label { font-size: 0.7rem; }
        }
        .badge-timezone {
            font-size: 0.75rem;
            background: #e2e8f0;
            color: #1e293b;
        }