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

        :root {
            --bg-primary: #ffffff;
            --bg-secondary: #f5f5f5;
            --text-primary: #000000;
            --text-secondary: #666666;
            --border-color: #e0e0e0;
            --accent-color: #007bff;
            --danger-color: #dc3545;
        }

        body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
            background-color: var(--bg-primary);
            color: var(--text-primary);
        }

        header {
            background-color: var(--bg-secondary);
            border-bottom: 1px solid var(--border-color);
            padding: 20px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 20px;
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
        }

        .header-left {
            display: flex;
            gap: 20px;
            align-items: center;
            flex: 1;
        }

        .logo {
            font-size: 24px;
            font-weight: bold;
            color: var(--accent-color);
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .logo i {
            font-size: 28px;
        }

        nav {
            display: flex;
            gap: 10px;
        }

        nav button {
            padding: 10px 20px;
            border: 1px solid var(--border-color);
            background-color: var(--bg-primary);
            color: var(--text-primary);
            cursor: pointer;
            border-radius: 6px;
            font-size: 14px;
            transition: all 0.2s;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        nav button:hover {
            background-color: var(--accent-color);
            color: white;
            border-color: var(--accent-color);
        }

        nav button.active {
            background-color: var(--accent-color);
            color: white;
            border-color: var(--accent-color);
        }

        .header-right {
            display: flex;
            gap: 20px;
            align-items: center;
        }

        .time-display {
            font-size: 32px;
            font-weight: 700;
            color: var(--accent-color);
            font-family: 'Courier New', monospace;
            letter-spacing: 2px;
            min-width: 200px;
            text-align: right;
        }

        main {
            padding: 20px;
            max-width: 1000px;
            margin: 0 auto;
        }

        .section {
            display: none;
        }

        .section.active {
            display: block;
        }

        .section h2 {
            margin-bottom: 20px;
            font-size: 24px;
            color: var(--text-primary);
        }

        .form-group {
            margin-bottom: 20px;
        }

        label {
            display: block;
            margin-bottom: 8px;
            font-weight: 600;
            color: var(--text-primary);
            display: flex;
            align-items: center;
            gap: 8px;
        }

        label i {
            color: var(--accent-color);
            width: 20px;
        }

        input, select {
            width: 100%;
            padding: 12px;
            border: 1px solid var(--border-color);
            border-radius: 6px;
            background-color: var(--bg-secondary);
            color: var(--text-primary);
            font-size: 14px;
        }

        input:focus, select:focus {
            outline: none;
            border-color: var(--accent-color);
            box-shadow: 0 0 0 3px rgba(0, 123, 255, 0.1);
        }

        .form-row {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
        }

        .time-mode-tabs {
            display: flex;
            gap: 10px;
            margin-bottom: 20px;
        }

        .time-mode-btn {
            padding: 10px 20px;
            border: 2px solid var(--border-color);
            background-color: transparent;
            color: var(--text-primary);
            cursor: pointer;
            border-radius: 6px;
            font-weight: 600;
            transition: all 0.2s;
        }

        .time-mode-btn.active {
            background-color: var(--accent-color);
            color: white;
            border-color: var(--accent-color);
        }

        .time-mode-section {
            display: none;
            background-color: var(--bg-secondary);
            padding: 20px;
            border-radius: 8px;
            border: 1px solid var(--border-color);
            margin-bottom: 20px;
        }

        .time-mode-section.active {
            display: block;
        }

        .time-picker {
            display: flex;
            gap: 10px;
            align-items: flex-end;
        }

        .time-picker-input {
            flex: 1;
        }

        .time-picker-input input {
            text-align: center;
            font-size: 18px;
            font-weight: 700;
        }

        .time-separator {
            font-size: 24px;
            font-weight: 700;
            color: var(--text-primary);
        }

        button.btn-primary {
            padding: 12px 24px;
            background-color: var(--accent-color);
            color: white;
            border: none;
            border-radius: 6px;
            cursor: pointer;
            font-size: 14px;
            font-weight: 600;
            transition: all 0.2s;
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
        }

        button.btn-primary:hover {
            background-color: #0056b3;
            transform: translateY(-2px);
            box-shadow: 0 4px 12px rgba(0, 123, 255, 0.3);
        }

        .events-list {
            display: grid;
            gap: 15px;
        }

        .event-card {
            background-color: var(--bg-secondary);
            border: 1px solid var(--border-color);
            border-radius: 8px;
            padding: 20px;
            display: grid;
            grid-template-columns: 1fr auto;
            gap: 20px;
            align-items: center;
        }

        .event-card:hover {
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
            border-color: var(--accent-color);
        }

        .event-card.disabled {
            opacity: 0.6;
        }

        .event-info h3 {
            font-size: 16px;
            margin-bottom: 8px;
            color: var(--text-primary);
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .event-info h3 i {
            color: var(--accent-color);
        }

        .event-info p {
            font-size: 14px;
            color: var(--text-secondary);
        }

        .event-actions {
            display: flex;
            gap: 10px;
            flex-wrap: wrap;
            justify-content: flex-end;
        }

        button.btn-small {
            padding: 8px 16px;
            border: 1px solid var(--border-color);
            background-color: var(--bg-primary);
            color: var(--text-primary);
            cursor: pointer;
            border-radius: 6px;
            font-size: 12px;
            transition: all 0.2s;
            display: flex;
            align-items: center;
            gap: 6px;
        }

        button.btn-small:hover {
            background-color: var(--accent-color);
            color: white;
            border-color: var(--accent-color);
        }

        button.btn-small.danger {
            border-color: var(--danger-color);
            color: var(--danger-color);
        }

        button.btn-small.danger:hover {
            background-color: var(--danger-color);
            color: white;
            border-color: var(--danger-color);
        }

        .empty-state {
            text-align: center;
            padding: 60px 20px;
            color: var(--text-secondary);
        }

        .empty-state i {
            font-size: 48px;
            margin-bottom: 20px;
            opacity: 0.5;
        }

        .empty-state p {
            font-size: 16px;
        }

        .alarm-overlay {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            z-index: 10000;
            display: none;
            justify-content: center;
            align-items: center;
        }

        .alarm-overlay.active {
            display: flex;
        }

        .alarm-overlay.multicolor {
            background: linear-gradient(45deg, #ff0000, #ffff00, #00ff00, #00ffff, #0000ff, #ff00ff, #ff0000);
            background-size: 400% 400%;
            animation: gradientShift 1s ease infinite;
        }

        .alarm-overlay.blackwhite {
            background-color: #000000;
            animation: blink-bw 0.5s infinite;
        }

        .alarm-overlay.redwarning {
            background-color: #ff0000;
            animation: blink-red 0.5s infinite;
        }

        @keyframes gradientShift {
            0% { background-position: 0% 50%; }
            50% { background-position: 100% 50%; }
            100% { background-position: 0% 50%; }
        }

        @keyframes blink-bw {
            0%, 100% { background-color: #000000; }
            50% { background-color: #ffffff; }
        }

        @keyframes blink-red {
            0%, 100% { background-color: #ff0000; }
            50% { background-color: #ffcccc; }
        }

        .alarm-content {
            text-align: center;
            z-index: 10001;
        }

        .alarm-icon {
            font-size: 80px;
            color: white;
            margin-bottom: 20px;
            text-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
            animation: shake 0.5s infinite;
        }

        @keyframes shake {
            0%, 100% { transform: translateX(0) rotate(0deg); }
            25% { transform: translateX(-10px) rotate(-5deg); }
            75% { transform: translateX(10px) rotate(5deg); }
        }

        .alarm-content h1 {
            font-size: 72px;
            margin-bottom: 30px;
            font-weight: 700;
            color: white;
            text-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
            animation: bounce 0.6s infinite;
        }

        @keyframes bounce {
            0%, 100% { transform: scale(1); }
            50% { transform: scale(1.1); }
        }

        .alarm-button {
            padding: 20px 50px;
            font-size: 24px;
            font-weight: 700;
            border: none;
            border-radius: 12px;
            cursor: pointer;
            background-color: white;
            color: #333;
            transition: all 0.2s;
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
            margin-top: 20px;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 12px;
        }

        .alarm-button:hover {
            transform: scale(1.05);
            box-shadow: 0 12px 32px rgba(0, 0, 0, 0.4);
        }

        .notification {
            position: fixed;
            top: 20px;
            right: 20px;
            background-color: var(--bg-secondary);
            border: 2px solid var(--accent-color);
            border-radius: 8px;
            padding: 16px;
            z-index: 9999;
            display: flex;
            align-items: center;
            gap: 12px;
            animation: slideIn 0.3s ease;
        }

        .notification.success {
            border-color: #28a745;
        }

        .notification.error {
            border-color: var(--danger-color);
        }

        .notification i {
            font-size: 24px;
        }

        .notification.success i {
            color: #28a745;
        }

        .notification.error i {
            color: var(--danger-color);
        }

        @keyframes slideIn {
            from {
                transform: translateX(400px);
                opacity: 0;
            }
            to {
                transform: translateX(0);
                opacity: 1;
            }
        }

        @media (max-width: 768px) {
            .form-row {
                grid-template-columns: 1fr;
            }

            header {
                flex-direction: column;
                gap: 10px;
            }

            .header-left {
                flex-direction: column;
                width: 100%;
            }

            nav {
                width: 100%;
                flex-wrap: wrap;
            }

            nav button {
                flex: 1;
                min-width: 150px;
            }

            .event-card {
                grid-template-columns: 1fr;
            }

            .event-actions {
                justify-content: flex-start;
            }

            .time-display {
                font-size: 24px;
                min-width: auto;
            }
        }