:root {
    --bg-color: #f8f7f4;
    --sidebar-bg: #1a1a2e;
    --accent-color: #4361ee;
    --text-primary: #333333;
    --text-secondary: #666666;
    --text-light: #ffffff;
    --border-color: #e0e0e0;
    
    --success: #2e7d32;
    --warning: #f57c00;
    --danger: #c62828;
    
    --font-sans: 'IBM Plex Sans', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    --font-mono: 'IBM Plex Mono', monospace;
}

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

body {
    font-family: var(--font-sans);
    background-color: var(--bg-color);
    color: var(--text-primary);
    line-height: 1.6;
}

/* --- Utilities --- */
.text-danger { color: var(--danger); }
.text-success { color: var(--success); }
.text-warning { color: var(--warning); }
.mt-3 { margin-top: 1rem; }
.mt-4 { margin-top: 1.5rem; }

.badge {
    display: inline-block;
    padding: 0.25rem 0.6rem;
    font-size: 0.75rem;
    font-weight: 600;
    border-radius: 4px;
    background-color: var(--sidebar-bg);
    color: var(--text-light);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}
.badge-warning { background-color: var(--warning); }
.badge-danger { background-color: var(--danger); }
.badge-success { background-color: var(--success); }

.btn {
    display: inline-block;
    font-family: var(--font-sans);
    font-weight: 500;
    text-align: center;
    text-decoration: none;
    cursor: pointer;
    border: 1px solid transparent;
    padding: 0.5rem 1rem;
    font-size: 1rem;
    border-radius: 4px;
    transition: all 0.2s ease-in-out;
}

.btn-primary {
    color: var(--text-light);
    background-color: var(--accent-color);
    border-color: var(--accent-color);
}
.btn-primary:hover {
    background-color: #3651d4;
}

.btn-outline {
    color: var(--accent-color);
    background-color: transparent;
    border-color: var(--accent-color);
}
.btn-outline:hover {
    background-color: var(--accent-color);
    color: var(--text-light);
}

.btn-sm {
    padding: 0.25rem 0.5rem;
    font-size: 0.875rem;
}

/* --- Cards --- */
.card {
    background-color: white;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
    margin-bottom: 1.5rem;
    overflow: hidden;
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 1.25rem;
    border-bottom: 1px solid var(--border-color);
    background-color: #fafafa;
}

.card-body {
    padding: 1.25rem;
}

.card-footer {
    padding: 0.75rem 1.25rem;
    background-color: #fafafa;
    border-top: 1px solid var(--border-color);
    color: var(--text-secondary);
}

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

.login-container {
    background: white;
    padding: 2.5rem;
    border-radius: 8px;
    box-shadow: 0 10px 25px rgba(0,0,0,0.5);
    width: 100%;
    max-width: 400px;
    border-top: 4px solid var(--accent-color);
}

.login-header {
    text-align: center;
    margin-bottom: 2rem;
}

.logo {
    width: 48px;
    height: 48px;
    color: var(--accent-color);
    margin-bottom: 1rem;
}

.logo-small {
    width: 32px;
    height: 32px;
    color: var(--accent-color);
    margin-right: 0.75rem;
}

.login-header h1 {
    font-size: 1.75rem;
    color: var(--sidebar-bg);
    margin-bottom: 0.25rem;
    font-weight: 700;
}

.login-header p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.form-group {
    margin-bottom: 1.25rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: var(--sidebar-bg);
}

.form-group input {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    font-family: var(--font-sans);
    font-size: 1rem;
    transition: border-color 0.2s;
}

.form-group input:focus {
    outline: none;
    border-color: var(--accent-color);
    box-shadow: 0 0 0 2px rgba(67, 97, 238, 0.2);
}

.login-form .btn {
    width: 100%;
    padding: 0.75rem;
    font-size: 1.1rem;
    margin-top: 1rem;
}

.error-message {
    color: var(--danger);
    background-color: #ffebee;
    padding: 0.75rem;
    border-radius: 4px;
    margin-bottom: 1rem;
    font-size: 0.9rem;
    border-left: 3px solid var(--danger);
}

.login-footer {
    margin-top: 2rem;
    text-align: center;
    font-size: 0.8rem;
    color: var(--text-secondary);
    border-top: 1px solid var(--border-color);
    padding-top: 1rem;
}

.hint {
    margin-top: 0.5rem;
    font-family: var(--font-mono);
    color: var(--accent-color);
    font-size: 0.85rem;
}

/* --- Dashboard Layout --- */
.dashboard-page {
    display: flex;
    min-height: 100vh;
}

/* Sidebar */
.sidebar {
    width: 250px;
    background-color: var(--sidebar-bg);
    color: var(--text-light);
    display: flex;
    flex-direction: column;
    flex-shrink: 0;
}

.sidebar-header {
    padding: 1.5rem;
    display: flex;
    align-items: center;
    border-bottom: 1px solid rgba(255,255,255,0.1);
}

.sidebar-header h2 {
    font-size: 1.25rem;
    font-weight: 600;
    letter-spacing: 0.5px;
}

.sidebar-nav {
    padding: 1.5rem 0;
    flex-grow: 1;
}

.sidebar-nav ul {
    list-style: none;
}

.sidebar-nav li {
    margin-bottom: 0.25rem;
}

.sidebar-nav a {
    display: block;
    padding: 0.75rem 1.5rem;
    color: rgba(255,255,255,0.7);
    text-decoration: none;
    transition: all 0.2s;
}

.sidebar-nav a:hover {
    color: var(--text-light);
    background-color: rgba(255,255,255,0.05);
}

.sidebar-nav li.active a {
    color: var(--text-light);
    background-color: rgba(67, 97, 238, 0.2);
    border-left: 3px solid var(--accent-color);
}

.sidebar-nav hr {
    border: none;
    border-top: 1px solid rgba(255,255,255,0.1);
    margin: 1rem 1.5rem;
}

/* Main Content */
.main-content {
    flex-grow: 1;
    display: flex;
    flex-direction: column;
    background-color: var(--bg-color);
    overflow-y: auto;
}

.topbar {
    background-color: white;
    padding: 1rem 2rem;
    display: flex;
    justify-content: flex-end;
    align-items: center;
    border-bottom: 1px solid var(--border-color);
    height: 64px;
}

.user-info {
    font-size: 0.9rem;
    display: flex;
    align-items: center;
    gap: 1rem;
}

.content-container {
    padding: 2rem;
    max-width: 1000px;
}

.section-header {
    margin-bottom: 2rem;
}

.section-header h1 {
    font-size: 1.8rem;
    color: var(--sidebar-bg);
    margin-bottom: 0.5rem;
}

.section-header p {
    color: var(--text-secondary);
}

.view {
    display: none;
}

.view.active {
    display: block;
}

/* Document Lists */
.doc-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.doc-list li {
    padding: 1rem 1.25rem;
    border-bottom: 1px solid #f0f0f0;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: background-color 0.2s;
}

.doc-list li:last-child {
    border-bottom: none;
}

.doc-list li:hover {
    background-color: #f9fdfa;
}

.doc-info {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.doc-title {
    font-weight: 600;
    color: var(--sidebar-bg);
}

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

.doc-meta span {
    margin-right: 1rem;
}

.classified-card {
    border-color: rgba(198, 40, 40, 0.3);
}

.classified-card .card-header {
    background-color: rgba(198, 40, 40, 0.05);
}

.flag-content {
    margin-top: 0.5rem;
    padding: 0.5rem;
    background-color: #ffebee;
    border: 1px solid #ffcdd2;
    border-radius: 4px;
    font-family: var(--font-mono);
    color: var(--danger);
    font-weight: bold;
}

/* Profile / Dev Tools */
.profile-details {
    padding: 1rem 0;
}

.detail-row {
    display: flex;
    padding: 0.75rem 0;
    border-bottom: 1px solid var(--border-color);
}

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

.detail-row .label {
    width: 120px;
    font-weight: 500;
    color: var(--text-secondary);
}

.detail-row .value {
    color: var(--sidebar-bg);
    font-weight: 600;
}

.code-block {
    font-family: var(--font-mono);
    background-color: #282c34;
    color: #abb2bf;
    padding: 1rem;
    border-radius: 6px;
    font-size: 0.85rem;
    width: 100%;
    overflow-x: auto;
    border: none;
    resize: none;
    line-height: 1.5;
}

textarea.code-block {
    min-height: 80px;
    word-break: break-all;
}

.dev-card .card-header {
    background-color: #fff3e0;
}

.decoded-container h4 {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin: 1rem 0 0.5rem 0;
}

pre.code-block {
    margin-top: 0;
}