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

:root {
    --primary-color: #6366f1;
    --secondary-color: #8b5cf6;
    --success-color: #10b981;
    --danger-color: #ef4444;
    --warning-color: #f59e0b;
    --dark-color: #1f2937;
    --light-color: #f9fafb;
    --border-color: #e5e7eb;
    --text-color: #111827;
    --text-light: #6b7280;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    padding: 20px;
    color: var(--text-color);
    direction: rtl;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    background: white;
    border-radius: 20px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    overflow: hidden;
}

/* Header */
.header {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: white;
    padding: 30px;
    text-align: center;
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
}

.header h1 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 10px;
}

.date-time {
    font-size: 1.2rem;
    background: rgba(255, 255, 255, 0.2);
    padding: 10px 20px;
    border-radius: 10px;
    backdrop-filter: blur(10px);
}

.subscription-links-bar {
    padding: 20px 30px;
    background: linear-gradient(135deg, #f8fafc 0%, #eef2ff 100%);
    border-bottom: 1px solid var(--border-color);
}

.subscription-links-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 16px;
    margin-bottom: 16px;
    flex-wrap: wrap;
}

.subscription-links-header h2 {
    margin: 0;
    font-size: 1.4rem;
    color: var(--dark-color);
}

.subscription-links-header p {
    margin: 4px 0 0;
    color: var(--text-light);
}

.subscription-links-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 14px;
}

.subscription-link-card {
    background: white;
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 16px;
    box-shadow: 0 8px 24px rgba(15, 23, 42, 0.08);
}

.subscription-link-card h3 {
    margin: 0 0 10px 0;
    color: var(--primary-color);
    font-size: 1.1rem;
}

.subscription-link-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 12px;
}

.subscription-link-empty {
    background: white;
    border: 1px dashed var(--border-color);
    border-radius: 14px;
    padding: 16px;
    color: var(--text-light);
    text-align: center;
}

/* Tabs */
.tabs {
    display: flex;
    background: var(--light-color);
    border-bottom: 2px solid var(--border-color);
    overflow-x: auto;
}

.tab-btn {
    flex: 1;
    padding: 20px;
    background: none;
    border: none;
    cursor: pointer;
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-light);
    transition: all 0.3s;
    border-bottom: 3px solid transparent;
    min-width: 150px;
}

.tab-btn:hover {
    background: rgba(99, 102, 241, 0.1);
    color: var(--primary-color);
}

.tab-btn.active {
    color: var(--primary-color);
    border-bottom-color: var(--primary-color);
    background: white;
}

/* Tab Content */
.tab-content {
    display: none;
    padding: 30px;
    animation: fadeIn 0.3s;
}

.tab-content.active {
    display: block;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Stats Grid */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}

.stat-card {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 30px;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
    transition: transform 0.3s;
}

.stat-card:hover {
    transform: translateY(-5px);
}

.stat-card h3 {
    font-size: 1rem;
    margin-bottom: 10px;
    opacity: 0.9;
}

.stat-card-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 12px;
}

.stat-card-header h3 {
    margin: 0;
}

.stat-icon {
    width: 44px;
    height: 44px;
    border-radius: 12px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.18);
    backdrop-filter: blur(6px);
    font-size: 1.35rem;
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.18);
    flex-shrink: 0;
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 700;
}

/* Chart Container */
.chart-container {
    background: white;
    padding: 30px;
    border-radius: 15px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    margin-top: 20px;
}

/* Section Header */
.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 30px;
    flex-wrap: wrap;
    gap: 15px;
}

.section-header h2 {
    font-size: 2rem;
    color: var(--dark-color);
}

.header-actions {
    display: flex;
    gap: 10px;
}

/* Buttons */
.btn {
    padding: 12px 24px;
    border: none;
    border-radius: 10px;
    cursor: pointer;
    font-size: 1rem;
    font-weight: 600;
    transition: all 0.3s;
    text-decoration: none;
    display: inline-block;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: white;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(99, 102, 241, 0.4);
}

.btn-secondary {
    background: var(--light-color);
    color: var(--text-color);
    border: 2px solid var(--border-color);
}

.btn-secondary:hover {
    background: var(--border-color);
}

.btn-danger {
    background: var(--danger-color);
    color: white;
}

.btn-danger:hover {
    background: #dc2626;
}

.btn-success {
    background: var(--success-color);
    color: white;
}

/* Departments Grid */
.departments-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 20px;
}

.department-card {
    background: white;
    border: 2px solid var(--border-color);
    border-radius: 15px;
    padding: 25px;
    transition: all 0.3s;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.department-card:hover {
    border-color: var(--primary-color);
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(99, 102, 241, 0.2);
}

.department-card h3 {
    font-size: 1.5rem;
    margin-bottom: 15px;
    color: var(--primary-color);
}

.department-card p {
    color: var(--text-light);
    margin-bottom: 10px;
}

.department-actions {
    display: flex;
    gap: 10px;
    margin-top: 15px;
}

/* Filter Bar */
.filter-bar {
    display: flex;
    gap: 15px;
    margin-bottom: 20px;
    flex-wrap: wrap;
}

.filter-bar select,
.filter-bar input {
    padding: 12px;
    border: 2px solid var(--border-color);
    border-radius: 10px;
    font-size: 1rem;
    flex: 1;
    min-width: 200px;
}

.filter-bar input:focus,
.filter-bar select:focus {
    outline: none;
    border-color: var(--primary-color);
}

/* Clients Table */
.clients-table-container {
    overflow-x: auto;
    border-radius: 15px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.clients-table {
    width: 100%;
    border-collapse: collapse;
    background: white;
}

.clients-table thead {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: white;
}

.clients-table th {
    padding: 15px;
    text-align: right;
    font-weight: 600;
}

.clients-table td {
    padding: 15px;
    border-bottom: 1px solid var(--border-color);
}

.clients-table tbody tr:hover {
    background: var(--light-color);
}

.whatsapp-link {
    color: var(--success-color);
    text-decoration: none;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 5px;
}

.whatsapp-link:hover {
    text-decoration: underline;
}

.table-actions {
    display: flex;
    gap: 5px;
}

.table-actions button {
    padding: 8px 12px;
    font-size: 0.9rem;
}

/* Calendar */
.calendar-controls {
    display: flex;
    gap: 10px;
    align-items: center;
    flex-wrap: wrap;
}

.calendar-controls select {
    padding: 10px;
    border: 2px solid var(--border-color);
    border-radius: 10px;
    font-size: 1rem;
}

.calendar-container {
    margin-top: 20px;
}

.calendar-grid {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 10px;
}

.calendar-day {
    aspect-ratio: 1;
    background: white;
    border: 2px solid var(--border-color);
    border-radius: 10px;
    padding: 10px;
    cursor: pointer;
    transition: all 0.3s;
    position: relative;
}

.calendar-day:hover {
    border-color: var(--primary-color);
    transform: scale(1.05);
}

.calendar-day.other-month {
    opacity: 0.3;
}

.calendar-day.today {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: white;
    border-color: var(--primary-color);
}

.calendar-day-number {
    font-weight: 700;
    font-size: 1.2rem;
}

.calendar-day-events {
    font-size: 0.8rem;
    margin-top: 5px;
    color: var(--text-light);
}

/* Payments List */
.payments-list {
    display: grid;
    gap: 15px;
}

/* Financing */
.financing-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}

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

.payment-item {
    background: white;
    border: 2px solid var(--border-color);
    border-radius: 15px;
    padding: 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: all 0.3s;
}

.payment-item:hover {
    border-color: var(--primary-color);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.payment-info h4 {
    color: var(--primary-color);
    margin-bottom: 5px;
}

.payment-info p {
    color: var(--text-light);
    font-size: 0.9rem;
}

.payment-amount {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--success-color);
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(5px);
    animation: fadeIn 0.3s;
}

.modal-content {
    background: white;
    margin: 2% auto;
    padding: 30px;
    border-radius: 20px;
    width: 90%;
    max-width: 500px;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    animation: slideDown 0.3s;
    position: relative;
    display: flex;
    flex-direction: column;
}

@keyframes slideDown {
    from {
        transform: translateY(-50px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

.close {
    position: absolute;
    left: 20px;
    top: 20px;
    font-size: 2rem;
    font-weight: bold;
    color: var(--text-light);
    cursor: pointer;
    transition: color 0.3s;
}

.close:hover {
    color: var(--danger-color);
}

.form-group {
    margin-bottom: 15px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: var(--dark-color);
}

.form-group input,
.form-group select {
    width: 100%;
    padding: 12px;
    border: 2px solid var(--border-color);
    border-radius: 10px;
    font-size: 1rem;
    transition: border-color 0.3s;
}

.form-group input:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--primary-color);
}

/* تثبيت زر الحفظ في أسفل النموذج */
.modal-content form {
    display: flex;
    flex-direction: column;
}

.modal-content form .btn {
    margin-top: 20px;
    align-self: flex-end;
    min-width: 120px;
    position: sticky;
    bottom: 0;
    background: white;
    padding-top: 15px;
    padding-bottom: 15px;
    z-index: 10;
    box-shadow: 0 -5px 15px rgba(0, 0, 0, 0.1);
}

/* Subscription Badges */
.subscription-badge {
    display: inline-block;
    padding: 5px 12px;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
    white-space: nowrap;
}

.subscription-badge.active {
    background: #d1fae5;
    color: #065f46;
}

.subscription-badge.warning {
    background: #fef3c7;
    color: #92400e;
}

.subscription-badge.expiring {
    background: #fde68a;
    color: #78350f;
}

.subscription-badge.expired {
    background: #fee2e2;
    color: #991b1b;
}

.subscription-badge.none {
    background: #e5e7eb;
    color: #374151;
}

/* Responsive */
@media (max-width: 768px) {
    .header-content {
        flex-direction: column;
        gap: 15px;
    }

    .header h1 {
        font-size: 1.8rem;
    }

    .stats-grid {
        grid-template-columns: 1fr;
    }

    .section-header {
        flex-direction: column;
        align-items: flex-start;
    }

    .calendar-grid {
        grid-template-columns: repeat(7, 1fr);
        gap: 5px;
    }

    .calendar-day {
        padding: 5px;
    }

    .clients-table {
        font-size: 0.9rem;
    }

    .clients-table th,
    .clients-table td {
        padding: 10px 5px;
    }
}

/* Loading Animation */
.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top-color: white;
    animation: spin 1s ease-in-out infinite;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}