/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Vazirmatn', 'Tahoma', Arial, sans-serif;
    background-color: #f8fafc;
    color: #1a202c;
    line-height: 1.6;
    direction: rtl;
}

/* Loading Screen */
.loading-screen {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    z-index: 9999;
    color: white;
}

.loading-spinner {
    width: 50px;
    height: 50px;
    border: 4px solid rgba(255, 255, 255, 0.3);
    border-top: 4px solid white;
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-bottom: 20px;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Navigation */
.navbar {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

.nav-brand {
    display: flex;
    align-items: center;
    color: white;
    font-size: 1.5rem;
    font-weight: 700;
    text-decoration: none;
}

.nav-brand i {
    margin-left: 10px;
    font-size: 1.8rem;
}

.nav-menu {
    display: flex;
    gap: 20px;
}

.nav-link {
    display: flex;
    align-items: center;
    color: white;
    text-decoration: none;
    padding: 10px 15px;
    border-radius: 8px;
    transition: all 0.3s ease;
    font-weight: 500;
}

.nav-link:hover,
.nav-link.active {
    background: rgba(255, 255, 255, 0.2);
    transform: translateY(-2px);
}

.nav-link i {
    margin-left: 8px;
    font-size: 1.1rem;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    cursor: pointer;
}

.nav-toggle span {
    width: 25px;
    height: 3px;
    background: white;
    margin: 3px 0;
    transition: 0.3s;
}

/* Main Content */
.main-content {
    margin-top: 70px;
    padding: 30px 20px;
    max-width: 1200px;
    margin-left: auto;
    margin-right: auto;
}

.content-section {
    display: none;
}

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

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 30px;
    padding-bottom: 20px;
    border-bottom: 2px solid #e2e8f0;
}

.section-header h1 {
    color: #2d3748;
    font-size: 2rem;
    font-weight: 700;
}

.section-header p {
    color: #718096;
    margin-top: 5px;
}

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

.stat-card {
    background: white;
    padding: 30px;
    border-radius: 12px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
    display: flex;
    align-items: center;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.stat-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
}

.stat-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-left: 20px;
}

.stat-icon i {
    color: white;
    font-size: 1.5rem;
}

.stat-content h3 {
    font-size: 2.5rem;
    font-weight: 700;
    color: #2d3748;
    margin-bottom: 5px;
}

.stat-content p {
    color: #718096;
    font-weight: 500;
}

/* Tables */
.table-container {
    background: white;
    border-radius: 12px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
    overflow: hidden;
}

.data-table {
    width: 100%;
    border-collapse: collapse;
}

.data-table th {
    background: #f7fafc;
    color: #4a5568;
    font-weight: 600;
    padding: 15px;
    text-align: right;
    border-bottom: 2px solid #e2e8f0;
}

.data-table td {
    padding: 15px;
    border-bottom: 1px solid #e2e8f0;
    color: #2d3748;
}

.data-table tr:hover {
    background: #f7fafc;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    padding: 12px 20px;
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
    gap: 8px;
}

.btn-primary {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(102, 126, 234, 0.4);
}

.btn-secondary {
    background: #e2e8f0;
    color: #4a5568;
}

.btn-secondary:hover {
    background: #cbd5e0;
}

.btn-danger {
    background: #e53e3e;
    color: white;
}

.btn-danger:hover {
    background: #c53030;
}

.btn-sm {
    padding: 8px 12px;
    font-size: 0.875rem;
}

/* Login Form */
.login-container {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 60vh;
}

.login-card {
    background: white;
    padding: 40px;
    border-radius: 12px;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
    width: 100%;
    max-width: 400px;
}

.login-header {
    text-align: center;
    margin-bottom: 30px;
}

.login-header h2 {
    color: #2d3748;
    font-size: 1.8rem;
    margin-bottom: 10px;
}

.login-header p {
    color: #718096;
}

.login-form {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

/* Forms */
.form-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 15px;
}

.form-group label {
    color: #4a5568;
    font-weight: 500;
}

.form-group input,
.form-group select,
.form-group textarea {
    padding: 12px;
    border: 2px solid #e2e8f0;
    border-radius: 8px;
    font-size: 1rem;
    transition: border-color 0.3s ease;
    font-family: inherit;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #667eea;
}

/* Modals */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    z-index: 2000;
    justify-content: center;
    align-items: center;
}

.modal.show {
    display: flex;
}

.modal-content {
    background: white;
    border-radius: 12px;
    width: 90%;
    max-width: 500px;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.2);
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px;
    border-bottom: 1px solid #e2e8f0;
}

.modal-header h3 {
    color: #2d3748;
    font-size: 1.5rem;
}

.close {
    font-size: 1.5rem;
    cursor: pointer;
    color: #718096;
    transition: color 0.3s ease;
}

.close:hover {
    color: #e53e3e;
}

.modal-form {
    padding: 20px;
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.modal-actions {
    display: flex;
    justify-content: flex-end;
    gap: 10px;
    padding-top: 20px;
    border-top: 1px solid #e2e8f0;
}

/* Toast Notifications */
.toast-container {
    position: fixed;
    top: 90px;
    left: 20px;
    z-index: 3000;
}

.toast {
    background: white;
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    padding: 15px 20px;
    margin-bottom: 10px;
    display: flex;
    align-items: center;
    gap: 10px;
    min-width: 300px;
    animation: slideIn 0.3s ease;
}

.toast.success {
    border-right: 4px solid #48bb78;
}

.toast.error {
    border-right: 4px solid #e53e3e;
}

.toast.warning {
    border-right: 4px solid #ed8936;
}

.toast.info {
    border-right: 4px solid #4299e1;
}

@keyframes slideIn {
    from {
        transform: translateX(-100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

/* Responsive Design */
@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: 70px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 70px);
        background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
        flex-direction: column;
        justify-content: flex-start;
        align-items: center;
        padding-top: 50px;
        transition: left 0.3s ease;
    }

    .nav-menu.active {
        left: 0;
    }

    .nav-toggle {
        display: flex;
    }

    .section-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 20px;
    }

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

    .form-row {
        grid-template-columns: 1fr;
    }

    .modal-content {
        width: 95%;
        margin: 20px;
    }

    .toast-container {
        left: 10px;
        right: 10px;
    }

    .toast {
        min-width: auto;
        width: 100%;
    }
}

/* Utility Classes */
.text-center { text-align: center; }
.text-right { text-align: right; }
.text-left { text-align: left; }

.mb-1 { margin-bottom: 0.25rem; }
.mb-2 { margin-bottom: 0.5rem; }
.mb-3 { margin-bottom: 0.75rem; }
.mb-4 { margin-bottom: 1rem; }
.mb-5 { margin-bottom: 1.25rem; }

.mt-1 { margin-top: 0.25rem; }
.mt-2 { margin-top: 0.5rem; }
.mt-3 { margin-top: 0.75rem; }
.mt-4 { margin-top: 1rem; }
.mt-5 { margin-top: 1.25rem; }

.hidden { display: none !important; }
.visible { display: block !important; }

/* Loading States */
.loading {
    opacity: 0.6;
    pointer-events: none;
}

.loading::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 20px;
    height: 20px;
    margin: -10px 0 0 -10px;
    border: 2px solid #f3f3f3;
    border-top: 2px solid #667eea;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

/* Persian Number Input */
input[type="tel"] {
    direction: ltr;
    text-align: right;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: #f1f1f1;
}

::-webkit-scrollbar-thumb {
    background: #c1c1c1;
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: #a8a8a8;
}