/* ===========================
   PIEM — Dark Theme CSS
   =========================== */

/* --- CSS Variables --- */
:root {
    --bg-primary: #1a1a2e;
    --bg-secondary: #16213e;
    --bg-card: #1f2b47;
    --bg-input: #162040;
    --bg-sidebar: #0f1527;
    --bg-hover: #243154;
    --text-primary: #e0e6f0;
    --text-secondary: #8892a8;
    --text-muted: #5a6478;
    --border-color: #2a3a5c;
    --accent-blue: #4a90d9;
    --accent-blue-hover: #5fa3ec;
    --color-success: #2ecc71;
    --color-error: #e74c3c;
    --color-warning: #f1c40f;
    --color-orange: #e67e22;
    --color-purple: #9b59b6;
    --color-gray: #6c7a8d;
    --sidebar-width: 240px;
    --radius: 6px;
    --radius-sm: 4px;
    --shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
    --transition: 0.2s ease;
}

/* --- Reset & Base --- */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html, body {
    height: 100%;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, sans-serif;
    font-size: 14px;
    line-height: 1.6;
    color: var(--text-primary);
    background: var(--bg-primary);
}

a {
    color: var(--accent-blue);
    text-decoration: none;
}

a:hover {
    color: var(--accent-blue-hover);
    text-decoration: underline;
}

code {
    background: var(--bg-input);
    padding: 2px 6px;
    border-radius: var(--radius-sm);
    font-size: 0.9em;
}

h2, h3, h4 {
    color: var(--text-primary);
    margin-bottom: 0.5em;
}

ul, ol {
    padding-left: 1.5em;
}

/* --- Sidebar --- */
.sidebar {
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    width: var(--sidebar-width);
    background: var(--bg-sidebar);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    z-index: 100;
    overflow-y: auto;
}

.sidebar-header {
    padding: 24px 20px 16px;
    border-bottom: 1px solid var(--border-color);
}

.sidebar-logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--accent-blue);
    letter-spacing: 2px;
}

.sidebar-subtitle {
    display: block;
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-top: 2px;
}

.sidebar-nav {
    list-style: none;
    padding: 12px 0;
    flex: 1;
}

.sidebar-nav li a {
    display: block;
    padding: 10px 20px;
    color: var(--text-secondary);
    text-decoration: none;
    transition: background var(--transition), color var(--transition);
    border-left: 3px solid transparent;
}

.sidebar-nav li a:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
    text-decoration: none;
}

.sidebar-nav li a.active {
    background: var(--bg-hover);
    color: var(--accent-blue);
    border-left-color: var(--accent-blue);
}

.sidebar-footer {
    padding: 16px 20px;
    border-top: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.sidebar-user {
    color: var(--text-secondary);
    font-size: 0.85rem;
}

.sidebar-logout {
    color: var(--color-error);
    font-size: 0.85rem;
}

.sidebar-toggle {
    display: none;
    position: fixed;
    top: 12px;
    left: 12px;
    z-index: 200;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    font-size: 1.4rem;
    padding: 6px 10px;
    border-radius: var(--radius-sm);
    cursor: pointer;
}

/* --- Main Content --- */
.content {
    margin-left: var(--sidebar-width);
    padding: 24px 32px;
    min-height: 100vh;
}

/* --- Page Header --- */
.page-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    flex-wrap: wrap;
    gap: 12px;
}

.page-header h2 {
    margin-bottom: 0;
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
}

/* --- Cards --- */
.card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: 20px;
    margin-bottom: 20px;
    box-shadow: var(--shadow);
}

.card h3 {
    margin-bottom: 12px;
    font-size: 1rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* --- Stats Grid --- */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 16px;
    margin-bottom: 24px;
}

.stat-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: 20px;
    text-align: center;
    box-shadow: var(--shadow);
}

.stat-value {
    font-size: 2rem;
    font-weight: 700;
    color: var(--accent-blue);
}

.stat-label {
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-top: 4px;
}

/* --- Detail Grid --- */
.detail-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin-bottom: 20px;
}

.detail-list {
    display: grid;
    grid-template-columns: auto 1fr;
    gap: 6px 16px;
}

.detail-list dt {
    color: var(--text-muted);
    font-weight: 600;
}

.detail-list dd {
    color: var(--text-primary);
}

/* --- Tables --- */
.table {
    width: 100%;
    border-collapse: collapse;
}

.table th,
.table td {
    padding: 10px 12px;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

.table th {
    color: var(--text-muted);
    font-weight: 600;
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.table tbody tr:nth-child(even) {
    background: rgba(255, 255, 255, 0.02);
}

.table tbody tr:hover {
    background: var(--bg-hover);
}

.table-compact th,
.table-compact td {
    padding: 6px 10px;
    font-size: 0.9em;
}

.text-center {
    text-align: center;
}

/* --- Badges: Priority/Severity --- */
.badge {
    display: inline-block;
    padding: 2px 10px;
    border-radius: 12px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.3px;
}

.badge-critical {
    background: var(--color-error);
    color: #fff;
}

.badge-high {
    background: var(--color-orange);
    color: #fff;
}

.badge-medium {
    background: var(--color-warning);
    color: #1a1a2e;
}

.badge-low {
    background: var(--color-success);
    color: #fff;
}

/* --- Badges: Status --- */
.badge-status-open {
    background: var(--accent-blue);
    color: #fff;
}

.badge-status-investigating {
    background: var(--color-purple);
    color: #fff;
}

.badge-status-monitoring {
    background: var(--color-warning);
    color: #1a1a2e;
}

.badge-status-resolved {
    background: var(--color-success);
    color: #fff;
}

.badge-status-closed {
    background: var(--color-gray);
    color: #fff;
}

/* --- Buttons --- */
.btn {
    display: inline-block;
    padding: 8px 16px;
    border: none;
    border-radius: var(--radius-sm);
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    text-decoration: none;
    transition: background var(--transition), opacity var(--transition);
    line-height: 1.4;
}

.btn:hover {
    text-decoration: none;
    opacity: 0.9;
}

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

.btn-primary {
    background: var(--accent-blue);
    color: #fff;
}

.btn-primary:hover {
    background: var(--accent-blue-hover);
    color: #fff;
}

.btn-secondary {
    background: var(--color-gray);
    color: #fff;
}

.btn-secondary:hover {
    background: #7d8a9e;
    color: #fff;
}

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

.btn-danger:hover {
    background: #c0392b;
    color: #fff;
}

.btn-sm {
    padding: 4px 10px;
    font-size: 0.8rem;
}

.btn-block {
    display: block;
    width: 100%;
    text-align: center;
}

/* --- Filter Bar --- */
.filter-bar {
    display: flex;
    gap: 8px;
    margin-bottom: 16px;
    flex-wrap: wrap;
}

/* --- Forms --- */
.form-group {
    margin-bottom: 16px;
}

.form-group label {
    display: block;
    margin-bottom: 4px;
    color: var(--text-secondary);
    font-weight: 500;
    font-size: 0.85rem;
}

.form-group input[type="text"],
.form-group input[type="email"],
.form-group input[type="password"],
.form-group input[type="number"],
.form-group input[type="url"],
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 8px 12px;
    background: var(--bg-input);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-size: 0.9rem;
    font-family: inherit;
    transition: border-color var(--transition);
}

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

.form-group select {
    appearance: auto;
}

.form-group textarea {
    resize: vertical;
}

.form-row {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

.form-row .form-group {
    flex: 1;
    min-width: 150px;
}

.form-actions {
    display: flex;
    gap: 10px;
    margin-top: 8px;
}

.form-inline {
    display: flex;
    gap: 10px;
    align-items: flex-end;
    margin-bottom: 16px;
}

.form-inline select {
    padding: 6px 10px;
    background: var(--bg-input);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-size: 0.9rem;
}

.form-help {
    color: var(--text-muted);
    font-size: 0.85rem;
    font-style: italic;
}

.form-hint {
    display: block;
    color: var(--text-muted);
    font-size: 0.8rem;
    margin-top: 0.25rem;
}

.form-hint code {
    background: var(--bg-primary);
    padding: 0.1rem 0.3rem;
    border-radius: 3px;
    font-size: 0.8rem;
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 6px;
    cursor: pointer;
    font-size: 0.9rem;
    color: var(--text-primary);
}

.checkbox-label input[type="checkbox"] {
    accent-color: var(--accent-blue);
}

.fieldset {
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: 16px;
    margin-bottom: 16px;
}

.fieldset legend {
    color: var(--text-secondary);
    font-weight: 600;
    padding: 0 8px;
    font-size: 0.9rem;
}

/* --- Flash Messages --- */
.flash-message {
    padding: 12px 16px;
    border-radius: var(--radius-sm);
    margin-bottom: 16px;
    font-weight: 500;
    transition: opacity 0.3s ease;
}

.flash-success {
    background: rgba(46, 204, 113, 0.15);
    border: 1px solid var(--color-success);
    color: var(--color-success);
}

.flash-error {
    background: rgba(231, 76, 60, 0.15);
    border: 1px solid var(--color-error);
    color: var(--color-error);
}

/* --- Timeline --- */
.timeline {
    position: relative;
    padding-left: 24px;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 8px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: var(--border-color);
}

.timeline-entry {
    position: relative;
    margin-bottom: 20px;
    padding: 12px 16px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
}

.timeline-entry::before {
    content: '';
    position: absolute;
    left: -20px;
    top: 16px;
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--accent-blue);
    border: 2px solid var(--bg-primary);
}

.timeline-entry-ai_analysis::before {
    background: var(--color-purple);
}

.timeline-entry-status_change::before {
    background: var(--color-warning);
}

.timeline-entry-note::before {
    background: var(--accent-blue);
}

.timeline-entry-data_collection::before {
    background: var(--color-success);
}

.timeline-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 8px;
    flex-wrap: wrap;
    gap: 8px;
}

.timeline-type {
    font-size: 0.7rem;
}

.badge-timeline-note {
    background: var(--accent-blue);
    color: #fff;
}

.badge-timeline-status_change {
    background: var(--color-warning);
    color: #1a1a2e;
}

.badge-timeline-ai_analysis {
    background: var(--color-purple);
    color: #fff;
}

.badge-timeline-data_collection {
    background: var(--color-success);
    color: #fff;
}

.badge-timeline-investigation {
    background: var(--color-orange);
    color: #fff;
}

.timeline-meta {
    font-size: 0.8rem;
    color: var(--text-muted);
}

.timeline-content {
    font-size: 0.9rem;
    color: var(--text-primary);
    line-height: 1.6;
    white-space: pre-wrap;
    word-break: break-word;
}

/* --- Source Items --- */
.source-item {
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: 16px;
    margin-bottom: 16px;
    background: var(--bg-secondary);
}

.source-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 12px;
}

.source-form {
    margin-bottom: 8px;
}

.source-meta {
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-top: 8px;
}

/* --- Login Page --- */
.login-page {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    background: var(--bg-primary);
}

.login-box {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: 40px;
    width: 100%;
    max-width: 400px;
    box-shadow: var(--shadow);
    text-align: center;
}

.login-box h1 {
    font-size: 2rem;
    color: var(--accent-blue);
    letter-spacing: 3px;
    margin-bottom: 4px;
}

.login-subtitle {
    color: var(--text-muted);
    margin-bottom: 24px;
    font-size: 0.9rem;
}

.login-box .form-group {
    text-align: left;
}

.login-box .btn-block {
    margin-top: 8px;
}

/* --- Responsive --- */
@media (max-width: 768px) {
    .sidebar {
        transform: translateX(-100%);
        transition: transform 0.3s ease;
    }

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

    .sidebar-toggle {
        display: block;
    }

    .content {
        margin-left: 0;
        padding: 60px 16px 24px;
    }

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

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

    .form-row {
        flex-direction: column;
    }

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

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