/* ============================================
   PII Scrubber Platform - Navy Blue & White Theme
   ============================================ */

:root {
    /* Primary Colors */
    --navy-900: #0a1628;
    --navy-800: #1a237e;
    --navy-700: #283593;
    --navy-600: #3949ab;
    --navy-500: #5c6bc0;
    --navy-100: #e8eaf6;
    --navy-50: #f5f7ff;

    /* Neutrals */
    --white: #ffffff;
    --gray-50: #fafafa;
    --gray-100: #f5f5f5;
    --gray-200: #eeeeee;
    --gray-300: #e0e0e0;
    --gray-400: #bdbdbd;
    --gray-500: #9e9e9e;
    --gray-600: #757575;
    --gray-700: #616161;
    --gray-800: #424242;

    /* Status Colors */
    --success: #2e7d32;
    --success-light: #e8f5e9;
    --warning: #f57f17;
    --warning-light: #fff8e1;
    --error: #c62828;
    --error-light: #ffebee;
    --info: #1565c0;
    --info-light: #e3f2fd;

    /* Typography */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', monospace;

    /* Shadows */
    --shadow-sm: 0 1px 3px rgba(26, 35, 126, 0.08);
    --shadow-md: 0 4px 12px rgba(26, 35, 126, 0.1);
    --shadow-lg: 0 8px 24px rgba(26, 35, 126, 0.12);
    --shadow-xl: 0 16px 48px rgba(26, 35, 126, 0.15);

    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --radius-full: 9999px;

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-normal: 250ms ease;
    --transition-slow: 400ms ease;
}

/* ============================================
   Reset & Base
   ============================================ */

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

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    background: var(--gray-50);
    color: var(--gray-800);
    line-height: 1.6;
    min-height: 100vh;
}

a {
    color: var(--navy-700);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--navy-500);
}

/* ============================================
   Layout
   ============================================ */

.app-layout {
    display: flex;
    min-height: 100vh;
}

/* ============================================
   Side Navigation
   ============================================ */

.sidebar {
    width: 260px;
    background: linear-gradient(180deg, var(--navy-900) 0%, var(--navy-800) 100%);
    color: var(--white);
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    z-index: 100;
    transition: transform var(--transition-normal);
    overflow-y: auto;
}

.sidebar.collapsed {
    transform: translateX(-260px);
}

.sidebar-header {
    padding: 24px 20px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.sidebar-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
    color: var(--white);
}

.sidebar-logo-icon {
    width: 36px;
    height: 36px;
    background: var(--navy-500);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    font-weight: 700;
}

.sidebar-logo-text {
    font-size: 18px;
    font-weight: 700;
    letter-spacing: -0.02em;
}

.sidebar-logo-text span {
    color: var(--navy-400);
    font-weight: 400;
}

.sidebar-nav {
    flex: 1;
    padding: 16px 12px;
}

.sidebar-nav-section {
    margin-bottom: 24px;
}

.sidebar-nav-title {
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: rgba(255, 255, 255, 0.4);
    padding: 0 12px;
    margin-bottom: 8px;
    font-weight: 600;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 12px;
    border-radius: var(--radius-md);
    color: rgba(255, 255, 255, 0.7);
    transition: all var(--transition-fast);
    cursor: pointer;
    font-size: 14px;
    font-weight: 500;
    text-decoration: none;
    margin-bottom: 2px;
}

.nav-item:hover {
    background: rgba(255, 255, 255, 0.08);
    color: var(--white);
}

.nav-item.active {
    background: var(--navy-600);
    color: var(--white);
    box-shadow: 0 2px 8px rgba(92, 107, 192, 0.3);
}

.nav-item-icon {
    width: 20px;
    text-align: center;
    font-size: 16px;
}

.sidebar-footer {
    padding: 16px 12px;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.sidebar-user {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 12px;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: background var(--transition-fast);
}

.sidebar-user:hover {
    background: rgba(255, 255, 255, 0.08);
}

.sidebar-avatar {
    width: 36px;
    height: 36px;
    border-radius: var(--radius-full);
    background: var(--navy-500);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    font-weight: 600;
    color: var(--white);
}

.sidebar-user-info {
    flex: 1;
    min-width: 0;
}

.sidebar-user-name {
    font-size: 13px;
    font-weight: 600;
    color: var(--white);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.sidebar-user-role {
    font-size: 11px;
    color: rgba(255, 255, 255, 0.5);
}

/* ============================================
   Main Content
   ============================================ */

.main-content {
    flex: 1;
    margin-left: 260px;
    min-height: 100vh;
}

.content-header {
    background: var(--white);
    padding: 16px 32px;
    border-bottom: 1px solid var(--gray-200);
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: sticky;
    top: 0;
    z-index: 50;
    box-shadow: var(--shadow-sm);
}

.content-header-left {
    display: flex;
    align-items: center;
    gap: 16px;
}

.hamburger-btn {
    display: none;
    background: none;
    border: none;
    font-size: 24px;
    cursor: pointer;
    color: var(--gray-700);
    padding: 4px;
}

.content-title {
    font-size: 20px;
    font-weight: 700;
    color: var(--navy-800);
}

.content-body {
    padding: 32px;
    max-width: 1400px;
}

/* ============================================
   Cards
   ============================================ */

.card {
    background: var(--white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--gray-200);
    transition: box-shadow var(--transition-fast);
}

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

.card-header {
    padding: 20px 24px;
    border-bottom: 1px solid var(--gray-200);
}

.card-title {
    font-size: 16px;
    font-weight: 600;
    color: var(--navy-800);
}

.card-body {
    padding: 24px;
}

.card-footer {
    padding: 16px 24px;
    border-top: 1px solid var(--gray-200);
    background: var(--gray-50);
}

/* ============================================
   Stat Cards
   ============================================ */

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 20px;
    margin-bottom: 32px;
}

.stat-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: 24px;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--gray-200);
    border-left: 4px solid var(--navy-700);
    transition: all var(--transition-fast);
}

.stat-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.stat-card.success { border-left-color: var(--success); }
.stat-card.warning { border-left-color: var(--warning); }
.stat-card.error { border-left-color: var(--error); }
.stat-card.info { border-left-color: var(--info); }

.stat-card-label {
    font-size: 13px;
    color: var(--gray-600);
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 8px;
}

.stat-card-value {
    font-size: 32px;
    font-weight: 700;
    color: var(--navy-800);
    line-height: 1;
}

.stat-card-icon {
    float: right;
    width: 48px;
    height: 48px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
}

.stat-card.success .stat-card-icon { background: var(--success-light); color: var(--success); }
.stat-card.warning .stat-card-icon { background: var(--warning-light); color: var(--warning); }
.stat-card.error .stat-card-icon { background: var(--error-light); color: var(--error); }
.stat-card.info .stat-card-icon { background: var(--info-light); color: var(--info); }

/* ============================================
   Tables
   ============================================ */

.table-wrapper {
    overflow-x: auto;
    border-radius: var(--radius-lg);
}

table {
    width: 100%;
    border-collapse: collapse;
    font-size: 14px;
}

thead th {
    background: var(--navy-800);
    color: var(--white);
    padding: 14px 16px;
    text-align: left;
    font-weight: 600;
    font-size: 13px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    white-space: nowrap;
}

thead th:first-child { border-radius: var(--radius-lg) 0 0 0; }
thead th:last-child { border-radius: 0 var(--radius-lg) 0 0; }

tbody td {
    padding: 12px 16px;
    border-bottom: 1px solid var(--gray-200);
    color: var(--gray-700);
}

tbody tr:hover {
    background: var(--navy-50);
}

tbody tr.selected {
    background: var(--navy-100);
}

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

.table-checkbox {
    width: 20px;
    height: 20px;
    accent-color: var(--navy-700);
    cursor: pointer;
}

/* ============================================
   Buttons
   ============================================ */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 20px;
    border: none;
    border-radius: var(--radius-md);
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-fast);
    text-decoration: none;
    white-space: nowrap;
    font-family: var(--font-primary);
}

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

.btn-primary {
    background: linear-gradient(135deg, var(--navy-800), var(--navy-600));
    color: var(--white);
    box-shadow: 0 2px 8px rgba(26, 35, 126, 0.3);
}

.btn-primary:hover:not(:disabled) {
    background: linear-gradient(135deg, var(--navy-700), var(--navy-500));
    box-shadow: 0 4px 16px rgba(26, 35, 126, 0.4);
    transform: translateY(-1px);
}

.btn-secondary {
    background: var(--white);
    color: var(--navy-800);
    border: 1px solid var(--gray-300);
}

.btn-secondary:hover:not(:disabled) {
    background: var(--gray-50);
    border-color: var(--navy-500);
}

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

.btn-success:hover:not(:disabled) {
    background: #1b5e20;
}

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

.btn-danger:hover:not(:disabled) {
    background: #b71c1c;
}

.btn-navy {
    background: var(--navy-800);
    color: var(--white);
}

.btn-navy:hover:not(:disabled) {
    background: var(--navy-600);
}

.btn-sm {
    padding: 6px 12px;
    font-size: 12px;
}

.btn-xs {
    padding: 2px 6px;
    font-size: 11px;
}

.btn-icon {
    padding: 8px;
    width: 36px;
    height: 36px;
}

/* ============================================
   Forms
   ============================================ */

.form-group {
    margin-bottom: 20px;
}

.form-label {
    display: block;
    font-size: 14px;
    font-weight: 600;
    color: var(--navy-800);
    margin-bottom: 6px;
}

.form-input,
.form-select,
.form-textarea {
    width: 100%;
    padding: 10px 14px;
    border: 1px solid var(--gray-300);
    border-radius: var(--radius-md);
    font-size: 14px;
    font-family: var(--font-primary);
    color: var(--gray-800);
    background: var(--white);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
    outline: none;
    border-color: var(--navy-500);
    box-shadow: 0 0 0 3px rgba(92, 107, 192, 0.15);
}

.form-input::placeholder {
    color: var(--gray-400);
}

.form-textarea {
    resize: vertical;
    min-height: 80px;
}

.form-checkbox-group {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 8px;
}

.form-checkbox-item {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 12px;
    border-radius: var(--radius-md);
    border: 1px solid var(--gray-200);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.form-checkbox-item:hover {
    border-color: var(--navy-500);
    background: var(--navy-50);
}

.form-checkbox-item input[type="checkbox"] {
    accent-color: var(--navy-700);
    width: 16px;
    height: 16px;
}

.form-error {
    color: var(--error);
    font-size: 12px;
    margin-top: 4px;
}

/* ============================================
   Badges & Status
   ============================================ */

.badge {
    display: inline-flex;
    align-items: center;
    padding: 4px 10px;
    border-radius: var(--radius-full);
    font-size: 12px;
    font-weight: 600;
}

.badge-success {
    background: var(--success-light);
    color: var(--success);
}

.badge-warning {
    background: var(--warning-light);
    color: var(--warning);
}

.badge-error {
    background: var(--error-light);
    color: var(--error);
}

.badge-info {
    background: var(--info-light);
    color: var(--info);
}

.badge-neutral {
    background: var(--gray-100);
    color: var(--gray-600);
}

.badge-navy {
    background: var(--navy-100);
    color: var(--navy-800);
}

/* ============================================
   Upload Drop Zone
   ============================================ */

.upload-zone {
    border: 2px dashed var(--gray-300);
    border-radius: var(--radius-xl);
    padding: 48px;
    text-align: center;
    cursor: pointer;
    transition: all var(--transition-normal);
    background: var(--white);
}

.upload-zone:hover,
.upload-zone.drag-over {
    border-color: var(--navy-500);
    background: var(--navy-50);
}

.upload-zone-icon {
    font-size: 48px;
    color: var(--gray-400);
    margin-bottom: 16px;
}

.upload-zone-text {
    font-size: 16px;
    color: var(--gray-600);
    margin-bottom: 8px;
}

.upload-zone-hint {
    font-size: 13px;
    color: var(--gray-400);
}

/* ============================================
   Modal
   ============================================ */

.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(10, 22, 40, 0.6);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    backdrop-filter: blur(4px);
}

.modal {
    background: var(--white);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
    max-width: 600px;
    width: 90%;
    max-height: 80vh;
    overflow-y: auto;
    animation: modalSlideIn 0.3s ease;
}

.modal-header {
    padding: 20px 24px;
    border-bottom: 1px solid var(--gray-200);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.modal-title {
    font-size: 18px;
    font-weight: 700;
    color: var(--navy-800);
}

.modal-close {
    background: none;
    border: none;
    font-size: 24px;
    cursor: pointer;
    color: var(--gray-500);
    padding: 4px;
}

.modal-close:hover {
    color: var(--gray-800);
}

.modal-body {
    padding: 24px;
}

.modal-footer {
    padding: 16px 24px;
    border-top: 1px solid var(--gray-200);
    display: flex;
    justify-content: flex-end;
    gap: 12px;
}

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

/* ============================================
   Loading Spinner
   ============================================ */

.spinner {
    display: inline-block;
    width: 24px;
    height: 24px;
    border: 3px solid var(--gray-200);
    border-top-color: var(--navy-700);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

.spinner-lg {
    width: 48px;
    height: 48px;
    border-width: 4px;
}

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

/* ============================================
   Toast Notifications
   ============================================ */

.toast-container {
    position: fixed;
    top: 24px;
    right: 24px;
    z-index: 2000;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.toast {
    background: var(--white);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    padding: 14px 20px;
    display: flex;
    align-items: center;
    gap: 12px;
    min-width: 320px;
    animation: toastSlideIn 0.3s ease;
    border-left: 4px solid var(--navy-700);
}

.toast.success { border-left-color: var(--success); }
.toast.error { border-left-color: var(--error); }
.toast.warning { border-left-color: var(--warning); }

.toast-message {
    flex: 1;
    font-size: 14px;
    color: var(--gray-800);
}

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

/* ============================================
   Empty State
   ============================================ */

.empty-state {
    text-align: center;
    padding: 64px 24px;
}

.empty-state-icon {
    font-size: 64px;
    color: var(--gray-300);
    margin-bottom: 16px;
}

.empty-state-text {
    font-size: 16px;
    color: var(--gray-500);
    margin-bottom: 24px;
}

/* ============================================
   Scanner Saved Sources
   ============================================ */

.saved-source-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 8px 12px;
    margin-bottom: 4px;
    border-radius: var(--radius-md);
    background: var(--gray-50);
    border: 1px solid var(--gray-200);
    transition: all var(--transition-fast);
}

.saved-source-item:hover {
    background: var(--navy-50);
    border-color: var(--navy-400);
}

.saved-source-name {
    cursor: pointer;
    font-size: 14px;
    color: var(--navy-800);
    font-weight: 500;
    flex: 1;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.saved-source-name:hover {
    color: var(--navy-600);
    text-decoration: underline;
}

.saved-source-name.selected {
    color: var(--navy-700);
    font-weight: 700;
}

.saved-source-actions {
    display: flex;
    align-items: center;
    flex-shrink: 0;
    margin-left: 8px;
}

/* ============================================
   Responsive
   ============================================ */

@media (max-width: 1024px) {
    .sidebar {
        transform: translateX(-260px);
    }

    .sidebar.mobile-open {
        transform: translateX(0);
    }

    .main-content {
        margin-left: 0;
    }

    .hamburger-btn {
        display: block;
    }
}

@media (max-width: 768px) {
    .content-body {
        padding: 20px 16px;
    }

    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }

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

    .modal {
        width: 95%;
    }
}

@media (max-width: 480px) {
    .stats-grid {
        grid-template-columns: 1fr;
    }
}