:root {
            --primary: #6366f1;
            --primary-dark: #4f46e5;
            --secondary: #f43f5e;
            --gray-50: #f9fafb;
            --gray-100: #f3f4f6;
            --gray-200: #e5e7eb;
            --gray-300: #d1d5db;
            --gray-400: #9ca3af;
            --gray-600: #4b5563;
            --gray-700: #374151;
            --gray-900: #111827;
            --success: #10b981;
            --white: #ffffff;
            --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
            --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
            --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
        }


        .page-container {
            max-width: 600px;
            margin: 0 auto;
        }

        .page-container .demo-card {
            background: var(--white);
            border-radius: 12px;
            padding: 32px;
            box-shadow: var(--shadow-md);
            text-align: center;
        }

        .page-container .demo-card h1 {
            font-size: 24px;
            font-weight: 700;
            color: var(--gray-900);
            margin-bottom: 12px;
        }

        .page-container .demo-card p {
            color: var(--gray-600);
            margin-bottom: 28px;
            line-height: 1.6;
        }

        .page-container .trigger-btn {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
            color: var(--white);
            border: none;
            padding: 14px 32px;
            border-radius: 10px;
            font-weight: 700;
            font-size: 16px;
            cursor: pointer;
            transition: all 0.3s ease;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        .page-container .trigger-btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 10px 20px rgba(99, 102, 241, 0.3);
        }

        /* Modal Styling */
        #recurringModal .modal-content {
            border: none;
            border-radius: 16px;
            box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
            background: var(--white);
        }

        #recurringModal .modal-header {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
            color: var(--white);
            border: none;
            border-radius: 16px 16px 0 0;
            padding: 24px;
        }

        #recurringModal .modal-header .modal-title {
            font-weight: 700;
            font-size: 18px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        #recurringModal .modal-header .btn-close {
            filter: brightness(0) invert(1);
        }

        #recurringModal .modal-body {
            padding: 28px 24px;
        }

        #recurringModal .section-title {
            font-size: 13px;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 1px;
            color: var(--gray-600);
            margin-bottom: 14px;
            display: block;
        }

        .frequency-selector {
            display: flex;
            gap: 10px;
            margin-bottom: 24px;
            flex-wrap: wrap;
        }

        .freq-btn {
            flex: 1;
            min-width: 100px;
            padding: 12px 16px;
            border: 2px solid var(--gray-200);
            background: var(--white);
            border-radius: 10px;
            cursor: pointer;
            font-weight: 600;
            font-size: 13px;
            transition: all 0.3s ease;
            color: var(--gray-700);
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 6px;
        }

        .freq-btn:hover {
            border-color: var(--primary);
            background: var(--gray-50);
            transform: translateY(-1px);
            box-shadow: var(--shadow-md);
        }

        .freq-btn.active {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
            border-color: var(--primary);
            color: var(--white);
            box-shadow: 0 8px 16px rgba(99, 102, 241, 0.3);
        }

        .freq-btn i {
            font-size: 14px;
        }

        .calendar-container {
            background: var(--gray-50);
            border-radius: 12px;
            padding: 20px;
            margin-top: 16px;
        }

        .calendar-header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 20px;
        }

        .calendar-header h2 {
            font-size: 15px;
            font-weight: 700;
            color: var(--gray-900);
            margin: 0;
        }

        .calendar-nav {
            display: flex;
            gap: 6px;
        }

        .calendar-nav button {
            width: 30px;
            height: 30px;
            border: 1px solid var(--gray-300);
            background: var(--white);
            border-radius: 8px;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: center;
            transition: all 0.2s ease;
            color: var(--gray-700);
            font-size: 14px;
        }

        .calendar-nav button:hover {
            background: var(--primary);
            border-color: var(--primary);
            color: var(--white);
        }

        .weekdays {
            display: grid;
            grid-template-columns: repeat(7, 1fr);
            gap: 6px;
            margin-bottom: 6px;
        }

        .weekday {
            text-align: center;
            font-weight: 700;
            font-size: 11px;
            color: var(--gray-600);
            padding: 6px;
            text-transform: uppercase;
            letter-spacing: 0.5px;
        }

        .days {
            display: grid;
            grid-template-columns: repeat(7, 1fr);
            gap: 6px;
        }

        .day {
            aspect-ratio: 1;
            display: flex;
            align-items: center;
            justify-content: center;
            border: 2px solid transparent;
            border-radius: 8px;
            cursor: pointer;
            font-weight: 600;
            font-size: 12px;
            transition: all 0.2s ease;
            background: var(--white);
            color: var(--gray-700);
        }

        .day:hover:not(.disabled):not(.other-month) {
            background: var(--gray-100);
            border-color: var(--primary);
        }

        .day.other-month {
            color: var(--gray-300);
            cursor: default;
        }

        .day.other-month:hover {
            background: var(--white);
            border-color: transparent;
        }

        .day.disabled {
            color: var(--gray-300);
            cursor: not-allowed;
            background: var(--gray-100);
        }

        .day.selected {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
            color: var(--white);
            border-color: var(--primary);
            box-shadow: 0 4px 8px rgba(99, 102, 241, 0.3);
        }

        .day.range {
            background: rgba(99, 102, 241, 0.1);
            border-color: var(--primary);
            color: var(--primary);
        }

        .day.start,
        .day.end {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
            color: var(--white);
            border-color: var(--primary);
        }

        .date-range-info {
            background: var(--white);
            border-radius: 10px;
            padding: 14px;
            margin-top: 14px;
            display: grid;
            grid-template-columns: 1fr auto 1fr;
            gap: 10px;
            align-items: center;
            border: 2px solid var(--gray-200);
        }

        .date-range-info .label {
            font-size: 11px;
            font-weight: 700;
            color: var(--gray-600);
            text-transform: uppercase;
            letter-spacing: 0.5px;
            display: block;
            margin-bottom: 3px;
        }

        .date-range-info .value {
            font-size: 13px;
            font-weight: 700;
            color: var(--gray-900);
        }

        .date-range-info .divider {
            color: var(--gray-300);
            text-align: center;
            font-size: 14px;
        }

        .summary {
            background: var(--gray-50);
            border-radius: 10px;
            padding: 14px;
            margin-top: 16px;
            border-left: 4px solid var(--success);
        }

        .summary h3 {
            font-size: 13px;
            font-weight: 700;
            color: var(--gray-900);
            margin-bottom: 6px;
        }

        .summary p {
            font-size: 12px;
            color: var(--gray-600);
            margin: 0;
            line-height: 1.5;
        }

        .modal-footer {
            border: none;
            padding: 16px 24px;
            background: var(--gray-50);
            border-radius: 0 0 16px 16px;
            gap: 10px;
        }

        .btn-modal-primary {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
            color: var(--white);
            border: none;
            padding: 10px 20px;
            border-radius: 8px;
            font-weight: 700;
            font-size: 13px;
            cursor: pointer;
            transition: all 0.3s ease;
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .btn-modal-primary:hover {
            transform: translateY(-1px);
            box-shadow: 0 8px 16px rgba(99, 102, 241, 0.3);
        }

        .btn-modal-secondary {
            background: var(--white);
            color: var(--primary);
            border: 2px solid var(--primary);
            padding: 8px 18px;
            border-radius: 8px;
            font-weight: 700;
            font-size: 13px;
            cursor: pointer;
            transition: all 0.3s ease;
        }

        .btn-modal-secondary:hover {
            background: var(--gray-50);
        }

        /* Responsive */
        @media (max-width: 576px) {
            .modal-body {
                padding: 20px 16px;
            }

            .frequency-selector {
                gap: 8px;
            }

            .freq-btn {
                min-width: 90px;
                padding: 10px 12px;
                font-size: 12px;
            }

            .date-range-info {
                grid-template-columns: 1fr;
            }

            .date-range-info .divider {
                display: none;
            }
        }