/* ============================================
   DARUL ARQAM - Modern Design System
   A complete, professional design system for SaaS-style admin panel
   ============================================ */

/* === CSS Custom Properties === */
:root {
    /* Primary Colors */
    --color-primary-50: #f0f9ff;
    --color-primary-100: #e0f2fe;
    --color-primary-200: #bae6fd;
    --color-primary-300: #7dd3fc;
    --color-primary-400: #38bdf8;
    --color-primary-500: #0ea5e9;
    --color-primary-600: #0284c7;
    --color-primary-700: #0369a1;
    --color-primary-800: #075985;
    --color-primary-900: #0c4a6e;

    /* Neutral Colors */
    --color-gray-50: #f8fafc;
    --color-gray-100: #f1f5f9;
    --color-gray-200: #e2e8f0;
    --color-gray-300: #cbd5e1;
    --color-gray-400: #94a3b8;
    --color-gray-500: #64748b;
    --color-gray-600: #475569;
    --color-gray-700: #334155;
    --color-gray-800: #1e293b;
    --color-gray-900: #0f172a;

    /* Semantic Colors */
    --color-success: #10b981;
    --color-warning: #f59e0b;
    --color-error: #ef4444;
    --color-info: #3b82f6;

    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;

    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-full: 9999px;

    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);

    /* Typography */
    --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    --font-mono: ui-monospace, SFMono-Regular, 'SF Mono', Monaco, Consolas, monospace;

    /* Transitions */
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 200ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 300ms cubic-bezier(0.4, 0, 0.2, 1);

    /* Z-index layers */
    --z-dropdown: 1000;
    --z-sticky: 1020;
    --z-fixed: 1030;
    --z-modal-backdrop: 1040;
    --z-modal: 1050;
    --z-popover: 1060;
    --z-tooltip: 1070;
}

/* === Global Resets & Base Styles === */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-sans);
    font-size: 0.875rem;
    line-height: 1.5;
    color: var(--color-gray-700);
    background-color: var(--color-gray-50);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* === Smooth Transitions === */
* {
    transition-property: color, background-color, border-color, opacity, box-shadow, transform;
    transition-duration: var(--transition-fast);
    transition-timing-function: cubic-bezier(0.4, 0, 0.2, 1);
}

/* === Animation Keyframes === */
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

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

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

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

@keyframes scaleIn {
    from {
        opacity: 0;
        transform: scale(0.95);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

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

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

@keyframes shimmer {
    0% { background-position: -1000px 0; }
    100% { background-position: 1000px 0; }
}

/* === Utility Classes === */
.fade-in {
    animation: fadeIn var(--transition-base) ease-in;
}

.slide-down {
    animation: slideDown var(--transition-base) ease-out;
}

.slide-up {
    animation: slideUp var(--transition-base) ease-out;
}

.scale-in {
    animation: scaleIn var(--transition-fast) ease-out;
}

/* === Loading States === */
.spinner {
    display: inline-block;
    width: 1rem;
    height: 1rem;
    border: 2px solid currentColor;
    border-right-color: transparent;
    border-radius: 50%;
    animation: spin 0.75s linear infinite;
}

.skeleton {
    background: linear-gradient(
        90deg,
        var(--color-gray-200) 0%,
        var(--color-gray-300) 50%,
        var(--color-gray-200) 100%
    );
    background-size: 1000px 100%;
    animation: shimmer 2s infinite;
    border-radius: var(--radius-md);
}

.skeleton-text {
    height: 0.875rem;
    margin-bottom: 0.5rem;
}

.skeleton-text:last-child {
    width: 60%;
}

/* === Card Component === */
.card {
    background: white;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--color-gray-200);
    overflow: hidden;
    transition: all var(--transition-base);
}

.card:hover {
    box-shadow: var(--shadow-md);
}

.card-header {
    padding: var(--spacing-lg);
    border-bottom: 1px solid var(--color-gray-200);
    background: var(--color-gray-50);
}

.card-body {
    padding: var(--spacing-lg);
}

.card-footer {
    padding: var(--spacing-lg);
    border-top: 1px solid var(--color-gray-200);
    background: var(--color-gray-50);
}

/* === Button Component === */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.625rem 1.25rem;
    font-size: 0.875rem;
    font-weight: 500;
    line-height: 1.25rem;
    border-radius: var(--radius-md);
    border: 1px solid transparent;
    cursor: pointer;
    transition: all var(--transition-fast);
    text-decoration: none;
    white-space: nowrap;
    user-select: none;
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.btn:focus-visible {
    outline: 2px solid var(--color-primary-500);
    outline-offset: 2px;
}

.btn-primary {
    background: var(--color-primary-600);
    color: white;
}

.btn-primary:hover:not(:disabled) {
    background: var(--color-primary-700);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.btn-primary:active {
    transform: translateY(0);
}

.btn-secondary {
    background: var(--color-gray-600);
    color: white;
}

.btn-secondary:hover:not(:disabled) {
    background: var(--color-gray-700);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.btn-outline {
    background: white;
    border-color: var(--color-gray-300);
    color: var(--color-gray-700);
}

.btn-outline:hover:not(:disabled) {
    background: var(--color-gray-50);
    border-color: var(--color-gray-400);
}

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

.btn-success:hover:not(:disabled) {
    background: #059669;
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

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

.btn-danger:hover:not(:disabled) {
    background: #dc2626;
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.btn-sm {
    padding: 0.375rem 0.875rem;
    font-size: 0.8125rem;
}

.btn-lg {
    padding: 0.75rem 1.5rem;
    font-size: 1rem;
}

.btn-icon {
    padding: 0.625rem;
    aspect-ratio: 1;
}

/* === Form Components === */
.form-group {
    margin-bottom: var(--spacing-lg);
}

.form-label {
    display: block;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--color-gray-700);
    margin-bottom: var(--spacing-sm);
}

.form-input,
.form-select,
.form-textarea {
    display: block;
    width: 100%;
    padding: 0.625rem 0.875rem;
    font-size: 0.875rem;
    line-height: 1.5;
    color: var(--color-gray-900);
    background: white;
    border: 1px solid var(--color-gray-300);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
    outline: none;
    border-color: var(--color-primary-500);
    box-shadow: 0 0 0 3px var(--color-primary-100);
}

.form-input:disabled,
.form-select:disabled,
.form-textarea:disabled {
    background: var(--color-gray-100);
    cursor: not-allowed;
}

.form-input.error,
.form-select.error,
.form-textarea.error {
    border-color: var(--color-error);
}

.form-input.error:focus,
.form-select.error:focus,
.form-textarea.error:focus {
    box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.1);
}

.form-error {
    display: block;
    margin-top: var(--spacing-xs);
    font-size: 0.8125rem;
    color: var(--color-error);
}

.form-help {
    display: block;
    margin-top: var(--spacing-xs);
    font-size: 0.8125rem;
    color: var(--color-gray-500);
}

.form-checkbox,
.form-radio {
    width: 1rem;
    height: 1rem;
    color: var(--color-primary-600);
    border-radius: var(--radius-sm);
    cursor: pointer;
}

.form-checkbox:focus,
.form-radio:focus {
    outline: 2px solid var(--color-primary-500);
    outline-offset: 2px;
}

/* === Table Component === */
.table-container {
    background: white;
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-gray-200);
    overflow: hidden;
}

.table-wrapper {
    overflow-x: auto;
}

.table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.875rem;
}

.table thead {
    background: var(--color-gray-50);
    border-bottom: 2px solid var(--color-gray-200);
}

.table th {
    padding: 0.875rem 1rem;
    text-align: left;
    font-weight: 600;
    color: var(--color-gray-700);
    white-space: nowrap;
}

.table th.sortable {
    cursor: pointer;
    user-select: none;
}

.table th.sortable:hover {
    background: var(--color-gray-100);
}

.table tbody tr {
    border-bottom: 1px solid var(--color-gray-200);
    transition: background-color var(--transition-fast);
}

.table tbody tr:hover {
    background: var(--color-gray-50);
}

.table tbody tr:last-child {
    border-bottom: none;
}

.table td {
    padding: 1rem;
    color: var(--color-gray-900);
}

.table-actions {
    display: flex;
    gap: var(--spacing-sm);
    justify-content: flex-end;
}

/* === Badge Component === */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 0.25rem 0.625rem;
    font-size: 0.75rem;
    font-weight: 500;
    line-height: 1;
    border-radius: var(--radius-full);
    white-space: nowrap;
}

.badge-primary {
    background: var(--color-primary-100);
    color: var(--color-primary-700);
}

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

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

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

.badge-info {
    background: #e0f2fe;
    color: #0c4a6e;
}

.badge-secondary {
    background: #e5e7eb;
    color: #374151;
}

.badge-gray {
    background: var(--color-gray-100);
    color: var(--color-gray-700);
}

/* === Alert Component === */
.alert {
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    border: 1px solid transparent;
    display: flex;
    align-items: start;
    gap: var(--spacing-md);
}

.alert-success {
    background: #d1fae5;
    border-color: #6ee7b7;
    color: #065f46;
}

.alert-warning {
    background: #fef3c7;
    border-color: #fcd34d;
    color: #92400e;
}

.alert-error {
    background: #fee2e2;
    border-color: #fca5a5;
    color: #991b1b;
}

.alert-info {
    background: #dbeafe;
    border-color: #93c5fd;
    color: #1e40af;
}

/* === Modal Component === */
.modal-backdrop {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: var(--z-modal-backdrop);
    animation: fadeIn var(--transition-base);
}

.modal {
    position: fixed;
    inset: 0;
    z-index: var(--z-modal);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-md);
    overflow-y: auto;
}

.modal-content {
    background: white;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
    max-width: 32rem;
    width: 100%;
    animation: scaleIn var(--transition-base);
}

.modal-header {
    padding: var(--spacing-lg);
    border-bottom: 1px solid var(--color-gray-200);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.modal-title {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--color-gray-900);
}

.modal-body {
    padding: var(--spacing-lg);
}

.modal-footer {
    padding: var(--spacing-lg);
    border-top: 1px solid var(--color-gray-200);
    display: flex;
    gap: var(--spacing-sm);
    justify-content: flex-end;
}

/* === Dropdown Component === */
.dropdown {
    position: relative;
    display: inline-block;
}

.dropdown-menu {
    position: absolute;
    top: 100%;
    right: 0;
    margin-top: var(--spacing-sm);
    min-width: 12rem;
    background: white;
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    z-index: var(--z-dropdown);
    animation: slideDown var(--transition-fast);
    overflow: hidden;
}

.dropdown-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: 0.625rem var(--spacing-md);
    color: var(--color-gray-700);
    text-decoration: none;
    transition: background-color var(--transition-fast);
    cursor: pointer;
}

.dropdown-item:hover {
    background: var(--color-gray-50);
}

.dropdown-divider {
    height: 1px;
    background: var(--color-gray-200);
    margin: var(--spacing-xs) 0;
}

/* === Toast/Notification Component === */
.toast-container {
    position: fixed;
    top: var(--spacing-lg);
    right: var(--spacing-lg);
    z-index: var(--z-tooltip);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    pointer-events: none;
}

.toast {
    min-width: 20rem;
    background: white;
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    padding: var(--spacing-md);
    display: flex;
    align-items: start;
    gap: var(--spacing-md);
    pointer-events: all;
    animation: slideInLeft var(--transition-base);
}

/* === Progress Bar === */
.progress {
    height: 0.5rem;
    background: var(--color-gray-200);
    border-radius: var(--radius-full);
    overflow: hidden;
}

.progress-bar {
    height: 100%;
    background: var(--color-primary-600);
    transition: width var(--transition-slow);
}

/* === Step Wizard === */
.step-wizard {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--spacing-xl);
    position: relative;
}

.step-wizard::before {
    content: '';
    position: absolute;
    top: 1.25rem;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--color-gray-200);
    z-index: 0;
}

.step-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-sm);
    position: relative;
    z-index: 1;
    flex: 1;
}

.step-circle {
    width: 2.5rem;
    height: 2.5rem;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: white;
    border: 2px solid var(--color-gray-300);
    font-weight: 600;
    color: var(--color-gray-400);
    transition: all var(--transition-base);
}

.step-item.active .step-circle {
    border-color: var(--color-primary-600);
    background: var(--color-primary-600);
    color: white;
}

.step-item.completed .step-circle {
    border-color: var(--color-success);
    background: var(--color-success);
    color: white;
}

.step-label {
    font-size: 0.8125rem;
    color: var(--color-gray-500);
    font-weight: 500;
}

.step-item.active .step-label {
    color: var(--color-primary-700);
    font-weight: 600;
}

.step-item.completed .step-label {
    color: var(--color-gray-700);
}

/* === Responsive Utilities === */
@media (max-width: 768px) {
    .hide-mobile {
        display: none !important;
    }

    .btn {
        padding: 0.5rem 1rem;
    }

    .card-body {
        padding: var(--spacing-md);
    }

    .modal-content {
        margin: var(--spacing-md);
    }

    .table-responsive {
        display: none;
    }

    .table-cards {
        display: block;
    }

    .step-wizard {
        overflow-x: auto;
    }

    .step-label {
        font-size: 0.75rem;
    }
}

@media (min-width: 769px) {
    .hide-desktop {
        display: none !important;
    }

    .table-cards {
        display: none;
    }
}

/* === Card View for Mobile Tables === */
.table-cards {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.table-card {
    background: white;
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-lg);
    padding: var(--spacing-md);
    box-shadow: var(--shadow-sm);
}

.table-card-row {
    display: flex;
    justify-content: space-between;
    padding: var(--spacing-sm) 0;
    border-bottom: 1px solid var(--color-gray-100);
}

.table-card-row:last-child {
    border-bottom: none;
}

.table-card-label {
    font-weight: 600;
    color: var(--color-gray-600);
    font-size: 0.8125rem;
}

.table-card-value {
    color: var(--color-gray-900);
    font-size: 0.875rem;
}

/* === Empty State === */
.empty-state {
    text-align: center;
    padding: var(--spacing-2xl);
    color: var(--color-gray-500);
}

.empty-state-icon {
    font-size: 3rem;
    color: var(--color-gray-300);
    margin-bottom: var(--spacing-md);
}

.empty-state-title {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--color-gray-700);
    margin-bottom: var(--spacing-sm);
}

.empty-state-text {
    font-size: 0.875rem;
    color: var(--color-gray-500);
    margin-bottom: var(--spacing-lg);
}

/* === Print Styles === */
@media print {
    .no-print {
        display: none !important;
    }

    body {
        background: white;
    }

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

/* === Accessibility === */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border-width: 0;
}

/* === Focus Visible === */
*:focus-visible {
    outline: 2px solid var(--color-primary-500);
    outline-offset: 2px;
}

button:focus-visible,
a:focus-visible {
    outline: 2px solid var(--color-primary-500);
    outline-offset: 2px;
}