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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background: linear-gradient(135deg, #f97316 0%, #ea580c 100%);
    min-height: 100vh;
    color: #333;
    line-height: 1.6;
}

.app-container {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Header Styles */
.header {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.1);
    border-bottom: 1px solid rgba(255, 255, 255, 0.2);
}

.header-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}

.app-title {
    color: #f97316;
    font-size: 1.8rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.brand-logo {
    height: 32px;
    width: auto;
    display: inline-block;
    margin-right: 0.5rem;
    vertical-align: middle;
}

.nav-tabs {
    display: flex;
    gap: 0.5rem;
}

.user-menu {
    position: relative;
    display: flex;
    align-items: center;
    margin-left: auto;
}

.user-card {
    background: #ffffff;
    border: 2px solid #f97316;
    color: #374151;
    padding: 0.5rem 0.875rem;
    border-radius: 9999px;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 600;
    transition: all 0.2s ease;
}

.user-card i { color: #f97316; font-size: 1.25rem; }
.user-card:hover { background: rgba(249,115,22,0.08); }

.user-dropdown {
    position: absolute;
    top: 120%;
    right: 0;
    background: #fff;
    border: 1px solid #e5e7eb;
    border-radius: 10px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.12);
    padding: 0.75rem;
    display: none;
    min-width: 220px;
    z-index: 1001;
}

.user-dropdown.active { display: block; }

.user-summary { margin-bottom: 0.75rem; }
.user-summary-name { font-weight: 700; color: #111827; }
.user-summary-email { font-size: 0.9rem; color: #6b7280; }

.nav-tab {
    background: transparent;
    border: 2px solid #f97316;
    color: #f97316;
    padding: 0.75rem 1.5rem;
    border-radius: 25px;
    cursor: pointer;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: all 0.3s ease;
    font-size: 0.95rem;
}

.nav-tab:hover {
    background: rgba(249, 115, 22, 0.1);
    transform: translateY(-2px);
}

.nav-tab.active {
    background: #f97316;
    color: white;
    box-shadow: 0 4px 15px rgba(249, 115, 22, 0.3);
}

/* Main Content */
.main-content {
    flex: 1;
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem;
    width: 100%;
}

.tab-content {
    display: none;
    animation: fadeIn 0.3s ease;
}

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

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Card Styles */
.card {
    background: white;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    margin-bottom: 2rem;
    overflow: hidden;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.card-header {
    background: linear-gradient(135deg, #f8f9ff 0%, #e8ecff 100%);
    padding: 1.5rem 2rem;
    border-bottom: 1px solid #e5e7eb;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}

.card-header h2, .card-header h3 {
    color: #374151;
    font-weight: 700;
    margin-bottom: 0.25rem;
}

.card-header p {
    color: #6b7280;
    font-size: 0.95rem;
}

.card-body {
    padding: 2rem;
}

/* Form Styles */
.form {
    width: 100%;
}

.form-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.form-group {
    display: flex;
    flex-direction: column;
}

.form-group.full-width {
    grid-column: 1 / -1;
}

.form-group label {
    font-weight: 600;
    color: #374151;
    margin-bottom: 0.5rem;
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

.form-group input,
.form-group select,
.form-group textarea {
    padding: 0.875rem 1rem;
    border: 2px solid #e5e7eb;
    border-radius: 8px;
    font-size: 1rem;
    transition: all 0.3s ease;
    background: white;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #f97316;
    box-shadow: 0 0 0 3px rgba(249, 115, 22, 0.1);
}

.form-group textarea {
    resize: vertical;
    min-height: 100px;
}

.error-message {
    color: #ef4444;
    font-size: 0.875rem;
    margin-top: 0.25rem;
    min-height: 1.25rem;
}

/* Radio Group */
.radio-group {
    display: flex;
    gap: 1.5rem;
    margin-top: 0.5rem;
}

.radio-label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
    padding: 0.75rem 1rem;
    border: 2px solid #e5e7eb;
    border-radius: 8px;
    transition: all 0.3s ease;
    font-weight: 500;
}

.radio-label:hover {
    border-color: #f97316;
    background: rgba(249, 115, 22, 0.05);
}

.radio-label input[type="radio"] {
    display: none;
}

.radio-custom {
    width: 20px;
    height: 20px;
    border: 2px solid #e5e7eb;
    border-radius: 50%;
    position: relative;
    transition: all 0.3s ease;
}

.radio-label input[type="radio"]:checked + .radio-custom {
    border-color: #f97316;
    background: #f97316;
}

.radio-label input[type="radio"]:checked + .radio-custom::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 8px;
    height: 8px;
    background: white;
    border-radius: 50%;
}

.radio-label input[type="radio"]:checked ~ * {
    color: #f97316;
}

/* Checkbox Styles */
.checkbox-label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
    margin-top: 0.5rem;
}

.checkbox-label input[type="checkbox"] {
    display: none;
}

.checkbox-custom {
    width: 20px;
    height: 20px;
    border: 2px solid #e5e7eb;
    border-radius: 4px;
    position: relative;
    transition: all 0.3s ease;
}

.checkbox-label input[type="checkbox"]:checked + .checkbox-custom {
    border-color: #f97316;
    background: #f97316;
}

.checkbox-label input[type="checkbox"]:checked + .checkbox-custom::after {
    content: '✓';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: white;
    font-weight: bold;
    font-size: 0.875rem;
}

/* Button Styles */
.btn {
    padding: 0.875rem 1.5rem;
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    transition: all 0.3s ease;
    text-decoration: none;
    justify-content: center;
}

.btn-primary {
    background: linear-gradient(135deg, #f97316 0%, #ea580c 100%);
    color: white;
    box-shadow: 0 4px 15px rgba(249, 115, 22, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(249, 115, 22, 0.4);
}

.btn-secondary {
    background: #f3f4f6;
    color: #374151;
    border: 1px solid #d1d5db;
}

.btn-secondary:hover {
    background: #e5e7eb;
    transform: translateY(-1px);
}

.btn-danger {
    background: #ef4444;
    color: white;
}

.btn-danger:hover {
    background: #dc2626;
    transform: translateY(-1px);
}

.btn-small {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
}

.form-actions {
    display: flex;
    gap: 1rem;
    justify-content: flex-end;
    flex-wrap: wrap;
}

/* Admin Interface */
.admin-nav {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 2rem;
    background: white;
    padding: 1rem;
    border-radius: 15px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}

.admin-nav-btn {
    background: transparent;
    border: 2px solid #e5e7eb;
    color: #6b7280;
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    cursor: pointer;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: all 0.3s ease;
}

.admin-nav-btn:hover {
    border-color: #f97316;
    color: #f97316;
}

.admin-nav-btn.active {
    background: #f97316;
    border-color: #f97316;
    color: white;
}

.admin-section {
    display: none;
}

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

/* Table Styles */
.table-container {
    overflow-x: auto;
    border-radius: 8px;
    border: 1px solid #e5e7eb;
}

.data-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.95rem;
}

.data-table th,
.data-table td {
    padding: 1rem;
    text-align: left;
    border-bottom: 1px solid #e5e7eb;
}

.data-table th {
    background: #f9fafb;
    font-weight: 600;
    color: #374151;
    position: sticky;
    top: 0;
    z-index: 1;
}

.data-table tbody tr:hover {
    background: #f9fafb;
}

.data-table .actions {
    display: flex;
    gap: 0.5rem;
}

/* Status Badges */
.status-badge {
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.875rem;
    font-weight: 600;
    text-transform: uppercase;
}

.status-open {
    background: #dbeafe;
    color: #1e40af;
}

.status-sent {
    background: #fef3c7;
    color: #92400e;
}

.status-acknowledged,
.status-ack {
    background: #d1fae5;
    color: #065f46;
}

.status-escalation_failed {
    background: #fee2e2;
    color: #991b1b;
}

.status-closed,
.status-resolved {
    background: #e0e7ff;
    color: #3730a3;
}

.severity-low {
    background: #f0fdf4;
    color: #166534;
}

.severity-medium {
    background: #fef3c7;
    color: #92400e;
}

.severity-high {
    background: #fee2e2;
    color: #991b1b;
}

.oncall-badge {
    background: #dcfce7;
    color: #166534;
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
    font-size: 0.75rem;
    font-weight: 600;
}

.oncall-badge.off {
    background: #f3f4f6;
    color: #6b7280;
}

/* Membership Management */
.membership-container {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 2rem;
    min-height: 500px;
}

.users-pool,
.groups-pool {
    background: #f9fafb;
    border: 2px dashed #d1d5db;
    border-radius: 8px;
    padding: 1rem;
}

.users-pool h3,
.groups-pool h3 {
    margin-bottom: 1rem;
    color: #374151;
}

.user-list,
.group-list {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    min-height: 200px;
}

.user-item,
.group-item {
    background: white;
    border: 1px solid #e5e7eb;
    border-radius: 8px;
    padding: 1rem;
    cursor: grab;
    transition: all 0.3s ease;
}

.user-item:hover,
.group-item:hover {
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    transform: translateY(-2px);
}

.user-item.dragging {
    opacity: 0.5;
    cursor: grabbing;
}

.group-item {
    margin-bottom: 1rem;
}

.group-members {
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 1px solid #e5e7eb;
    min-height: 60px;
}

.member-item {
    background: #f0f9ff;
    border: 1px solid #bae6fd;
    border-radius: 6px;
    padding: 0.5rem;
    margin-bottom: 0.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: all 0.2s ease;
}

.member-item:hover {
    background: #e0f2fe;
    border-color: #7dd3fc;
}

.member-info {
    display: flex;
    gap: 0.5rem;
    align-items: center;
    flex: 1;
}

.role-badge {
    background: #f97316;
    color: white;
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
    font-size: 0.75rem;
    font-weight: 600;
}

.btn-icon {
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
    border-radius: 4px;
    transition: all 0.2s ease;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
}

.btn-icon:hover {
    background: rgba(0, 0, 0, 0.05);
}

.btn-icon.btn-danger {
    color: #dc2626;
}

.btn-icon.btn-danger:hover {
    background: #fee2e2;
    color: #991b1b;
}

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

.modal.active {
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal-content {
    background: white;
    border-radius: 15px;
    max-width: 500px;
    width: 90%;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.2);
    animation: slideIn 0.3s ease;
}

@keyframes slideIn {
    from { transform: scale(0.9) translateY(-20px); opacity: 0; }
    to { transform: scale(1) translateY(0); opacity: 1; }
}

.modal-header {
    padding: 1.5rem 2rem;
    border-bottom: 1px solid #e5e7eb;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-header h3 {
    color: #374151;
    font-weight: 700;
}

.modal-close {
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: #6b7280;
    padding: 0.25rem;
}

.modal-close:hover {
    color: #374151;
}

.modal-body {
    padding: 2rem;
}

.modal-footer {
    padding: 1rem 2rem;
    border-top: 1px solid #e5e7eb;
    display: flex;
    gap: 1rem;
    justify-content: flex-end;
}

/* Filters */
.filters {
    display: flex;
    gap: 1rem;
    align-items: center;
    flex-wrap: wrap;
}

.filters select,
.filters input {
    padding: 0.5rem;
    border: 1px solid #d1d5db;
    border-radius: 6px;
    font-size: 0.875rem;
}

/* Loading Spinner */
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(255, 255, 255, 0.9);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
}

.spinner {
    width: 50px;
    height: 50px;
    border: 4px solid #e5e7eb;
    border-top: 4px solid #f97316;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

/* Toast Notifications */
.toast-container {
    position: fixed;
    top: 2rem;
    right: 2rem;
    z-index: 10000;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.toast {
    background: white;
    border-radius: 8px;
    padding: 1rem 1.5rem;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
    border-left: 4px solid;
    max-width: 400px;
    animation: slideInRight 0.3s ease;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

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

.toast.success {
    border-left-color: #10b981;
}

.toast.error {
    border-left-color: #ef4444;
}

.toast.warning {
    border-left-color: #f59e0b;
}

.toast.info {
    border-left-color: #3b82f6;
}

.toast-icon {
    font-size: 1.25rem;
}

.toast.success .toast-icon {
    color: #10b981;
}

.toast.error .toast-icon {
    color: #ef4444;
}

.toast.warning .toast-icon {
    color: #f59e0b;
}

.toast.info .toast-icon {
    color: #3b82f6;
}

.toast-content {
    flex: 1;
}

.toast-title {
    font-weight: 600;
    margin-bottom: 0.25rem;
}

.toast-message {
    font-size: 0.875rem;
    color: #6b7280;
}

.toast-close {
    background: none;
    border: none;
    cursor: pointer;
    color: #9ca3af;
    font-size: 1rem;
    padding: 0.25rem;
}

.toast-close:hover {
    color: #6b7280;
}

/* Responsive Design */
@media (max-width: 768px) {
    .header-content {
        flex-direction: column;
        align-items: stretch;
    }

    .nav-tabs {
        justify-content: center;
        flex-wrap: wrap;
    }

    .main-content {
        padding: 1rem;
    }

    .card-body {
        padding: 1rem;
    }

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

    .membership-container {
        grid-template-columns: 1fr;
    }

    .filters {
        flex-direction: column;
        align-items: stretch;
    }

    .form-actions {
        justify-content: stretch;
    }

    .form-actions .btn {
        flex: 1;
    }

    .modal-content {
        margin: 1rem;
        width: calc(100% - 2rem);
    }

    .toast-container {
        top: 1rem;
        right: 1rem;
        left: 1rem;
    }

    .toast {
        max-width: none;
    }
}

@media (max-width: 480px) {
    .nav-tab {
        padding: 0.5rem 1rem;
        font-size: 0.875rem;
    }

    .card-header {
        padding: 1rem;
        flex-direction: column;
        align-items: stretch;
    }

    .data-table {
        font-size: 0.875rem;
    }

    .data-table th,
    .data-table td {
        padding: 0.75rem 0.5rem;
    }

    .admin-nav {
        flex-direction: column;
    }

    .admin-nav-btn {
        justify-content: center;
    }
}

/* Print Styles */
@media print {
    .header,
    .nav-tabs,
    .form-actions,
    .btn,
    .modal,
    .toast-container {
        display: none !important;
    }

    .card {
        box-shadow: none;
        border: 1px solid #ccc;
    }

    .main-content {
        max-width: none;
        margin: 0;
        padding: 0;
    }
}

/* Accessibility */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* High contrast mode */
@media (prefers-contrast: high) {
    .card {
        border: 2px solid #000;
    }

    .btn-primary {
        background: #000;
        border: 2px solid #000;
    }

    .btn-secondary {
        border: 2px solid #000;
    }
}

/* Focus styles for keyboard navigation */
*:focus {
    outline: 2px solid #f97316;
    outline-offset: 2px;
}

.btn:focus,
.nav-tab:focus,
.admin-nav-btn:focus {
    outline: 3px solid #f97316;
    outline-offset: 3px;
}

/* Skip link for accessibility */
.skip-link {
    position: absolute;
    top: -40px;
    left: 6px;
    background: #f97316;
    color: white;
    padding: 8px;
    text-decoration: none;
    border-radius: 4px;
    z-index: 10001;
}

.skip-link:focus {
    top: 6px;
}