/* Fiber Tech Assistant v2 - Dark Theme */

:root {
    --primary: #3b82f6;
    --primary-dark: #2563eb;
    --success: #22c55e;
    --warning: #f59e0b;
    --error: #ef4444;
    --bg: #0f172a;
    --bg-secondary: #1e293b;
    --card-bg: #1e293b;
    --text: #f1f5f9;
    --text-light: #94a3b8;
    --text-muted: #64748b;
    --border: #334155;
    --radius: 8px;
    --shadow: 0 1px 3px rgba(0,0,0,0.3);
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Header */
header {
    background: var(--card-bg);
    border-bottom: 1px solid var(--border);
    padding: 1rem;
    position: sticky;
    top: 0;
    z-index: 100;
}

nav {
    max-width: 1000px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-weight: 700;
    font-size: 1.1rem;
    color: var(--primary);
    text-decoration: none;
}

.nav-links a {
    color: var(--text-light);
    text-decoration: none;
    margin-left: 1.5rem;
    font-size: 0.95rem;
}

.nav-links a:hover { color: var(--primary); }
.nav-links .admin-link { color: var(--warning); }

/* Main */
main { flex: 1; padding: 1.5rem 1rem; }
.container { max-width: 1000px; margin: 0 auto; }

h1 { font-size: 1.5rem; margin-bottom: 1rem; }
h2 { font-size: 1.25rem; margin-bottom: 0.75rem; color: var(--text); }
h3 { font-size: 1.1rem; margin-bottom: 0.5rem; }
.subtitle { color: var(--text-light); margin-bottom: 1.5rem; }

.back-link {
    display: inline-block;
    margin-bottom: 1rem;
    color: var(--primary);
    text-decoration: none;
}

/* Buttons */
.btn, button[type="submit"] {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    background: var(--primary);
    color: white;
    border: none;
    border-radius: var(--radius);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    text-decoration: none;
    text-align: center;
}

.btn:hover, button[type="submit"]:hover { background: var(--primary-dark); }
.btn:disabled, button:disabled { opacity: 0.6; cursor: not-allowed; }

.btn-secondary {
    background: var(--border);
    color: var(--text);
}

.btn-small {
    padding: 0.4rem 0.8rem;
    font-size: 0.85rem;
}

.btn-small.danger { background: var(--error); }
.btn-small.secondary { background: var(--border); }

.clear-btn {
    padding: 0.75rem 1.5rem;
    background: var(--border);
    color: var(--text);
    border: none;
    border-radius: var(--radius);
    cursor: pointer;
}

/* Cards & Sections */
.ask-section, .chat-section, .login-section, .wizard-create-section, .settings-section {
    background: var(--card-bg);
    border-radius: var(--radius);
    padding: 1.5rem;
    box-shadow: var(--shadow);
    margin-bottom: 1.5rem;
}

/* Ask Form */
.ask-form { margin-bottom: 1rem; }

.input-wrapper {
    position: relative;
    margin-bottom: 1rem;
}

.ask-form textarea, .chat-form textarea, .wizard-form textarea {
    width: 100%;
    padding: 1rem;
    padding-right: 3rem;
    border: 2px solid var(--border);
    border-radius: var(--radius);
    font-size: 1rem;
    font-family: inherit;
    background: var(--bg);
    color: var(--text);
    resize: vertical;
}

.ask-form textarea:focus, .chat-form textarea:focus {
    outline: none;
    border-color: var(--primary);
}

.ask-form button[type="submit"] {
    width: 100%;
    padding: 1rem;
}

/* Voice Button */
.voice-btn {
    position: absolute;
    right: 0.75rem;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    opacity: 0.6;
    padding: 0.5rem;
}

.voice-btn:hover { opacity: 1; }
.voice-btn.listening { opacity: 1; animation: pulse 1s infinite; }

@keyframes pulse {
    0%, 100% { transform: translateY(-50%) scale(1); }
    50% { transform: translateY(-50%) scale(1.1); }
}

/* Response */
.response-section {
    margin-top: 1.5rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--border);
}

.response-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
}

.response-header h2 { margin: 0; color: var(--primary); }

.speak-btn {
    background: none;
    border: none;
    font-size: 1.25rem;
    cursor: pointer;
    padding: 0.5rem;
}

.response-content {
    background: var(--bg);
    padding: 1.25rem;
    border-radius: var(--radius);
    border: 1px solid var(--border);
    line-height: 1.7;
}

.response-content code {
    background: var(--border);
    padding: 0.2rem 0.4rem;
    border-radius: 4px;
}

.response-content pre {
    background: var(--bg);
    padding: 1rem;
    border-radius: var(--radius);
    overflow-x: auto;
}

/* Error */
.error-section {
    margin-top: 1rem;
    padding: 1rem;
    background: #450a0a;
    border: 1px solid #7f1d1d;
    border-radius: var(--radius);
    color: #fca5a5;
}

/* Quick Section */
.quick-section, .categories-section {
    background: var(--card-bg);
    border-radius: var(--radius);
    padding: 1.5rem;
    margin-bottom: 1.5rem;
}

.quick-section h3, .categories-section h3 {
    color: var(--text-light);
    margin-bottom: 1rem;
}

.quick-buttons {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.quick-btn {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 1rem 1.5rem;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    color: var(--text);
    text-decoration: none;
    font-weight: 500;
}

.quick-btn:hover { border-color: var(--primary); }

/* Category Chips */
.category-chips {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.chip {
    padding: 0.5rem 1rem;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: 20px;
    color: var(--text);
    text-decoration: none;
    font-size: 0.9rem;
}

.chip:hover { background: var(--primary); border-color: var(--primary); }
.chip .count { color: var(--text-muted); }

/* Chat */
.chat-container {
    display: flex;
    flex-direction: column;
    height: 55vh;
    min-height: 350px;
}

.chat-messages {
    flex: 1;
    overflow-y: auto;
    padding: 1rem;
    background: var(--bg);
    border-radius: var(--radius);
    margin-bottom: 1rem;
}

.message { margin-bottom: 1rem; max-width: 85%; }
.message.user { margin-left: auto; }
.message.assistant { margin-right: auto; }

.message-content {
    padding: 0.75rem 1rem;
    border-radius: var(--radius);
    line-height: 1.5;
}

.message.user .message-content { background: var(--primary); color: white; }
.message.assistant .message-content { background: var(--border); color: var(--text); }
.message-content ul { margin-left: 1.25rem; margin-top: 0.5rem; }

.chat-form {
    display: flex;
    gap: 0.5rem;
}

.chat-input-wrapper {
    flex: 1;
    position: relative;
}

.chat-form textarea { width: 100%; min-height: 50px; }
.chat-form button[type="submit"] { padding: 0.75rem 1.5rem; white-space: nowrap; }

.saved-docs {
    margin-top: 1.5rem;
    padding: 1rem;
    background: #052e16;
    border: 1px solid #166534;
    border-radius: var(--radius);
}

.saved-docs h3 { color: #86efac; margin-bottom: 0.5rem; }
.saved-docs ul { list-style: none; color: #86efac; }
.saved-docs li::before { content: "✓ "; }

/* Dashboard */
.dashboard-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.stat-card {
    background: var(--card-bg);
    padding: 1.25rem;
    border-radius: var(--radius);
    text-align: center;
}

.stat-card.highlight { border: 2px solid var(--warning); }
.stat-number { font-size: 2rem; font-weight: 700; color: var(--primary); }
.stat-card.highlight .stat-number { color: var(--warning); }
.stat-label { color: var(--text-light); font-size: 0.9rem; }

.quick-actions {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.action-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 1.5rem;
    background: var(--card-bg);
    border-radius: var(--radius);
    text-decoration: none;
    color: var(--text);
    border: 2px solid transparent;
}

.action-card:hover { border-color: var(--primary); }
.action-card.primary { border-color: var(--primary); }
.action-icon { font-size: 2rem; margin-bottom: 0.5rem; }
.action-text { font-weight: 600; }
.action-desc { font-size: 0.85rem; color: var(--text-muted); }

.dashboard-section {
    background: var(--card-bg);
    padding: 1.5rem;
    border-radius: var(--radius);
    margin-bottom: 1.5rem;
}

.unanswered-list, .questions-list { margin-top: 1rem; }

.unanswered-item, .question-item {
    padding: 0.75rem;
    background: var(--bg);
    border-radius: var(--radius);
    margin-bottom: 0.5rem;
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    align-items: center;
}

.question-text { flex: 1; min-width: 200px; }
.question-time, .question-status { font-size: 0.85rem; color: var(--text-muted); }
.question-item.unanswered { border-left: 3px solid var(--warning); }

.view-all {
    display: block;
    margin-top: 1rem;
    color: var(--primary);
    text-decoration: none;
}

.top-question-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 0.5rem 0;
    border-bottom: 1px solid var(--border);
}

.question-count {
    background: var(--primary);
    color: white;
    padding: 0.25rem 0.5rem;
    border-radius: var(--radius);
    font-size: 0.85rem;
    font-weight: 600;
}

.category-bars { margin-top: 1rem; }

.category-bar {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.5rem;
}

.cat-name { width: 100px; font-size: 0.9rem; }
.bar-fill {
    height: 20px;
    background: var(--primary);
    border-radius: 4px;
    min-width: 5px;
}
.cat-count { font-size: 0.85rem; color: var(--text-muted); }

/* Wizard */
.wizard-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1rem;
}

.wizard-card {
    display: block;
    background: var(--card-bg);
    padding: 1.5rem;
    border-radius: var(--radius);
    text-decoration: none;
    color: var(--text);
    border: 2px solid transparent;
}

.wizard-card:hover { border-color: var(--primary); }
.wizard-card h3 { color: var(--primary); margin-bottom: 0.5rem; }
.wizard-desc { color: var(--text-light); font-size: 0.9rem; margin-bottom: 0.5rem; }
.wizard-category {
    display: inline-block;
    padding: 0.25rem 0.5rem;
    background: var(--bg);
    border-radius: 4px;
    font-size: 0.8rem;
}

.wizard-content, .wizard-solution {
    background: var(--card-bg);
    padding: 2rem;
    border-radius: var(--radius);
}

.step-question { margin-bottom: 1.5rem; }

.step-options {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.step-option {
    padding: 1rem 1.5rem;
    background: var(--bg);
    border: 2px solid var(--border);
    border-radius: var(--radius);
    color: var(--text);
    font-size: 1rem;
    cursor: pointer;
    text-align: left;
}

.step-option:hover { border-color: var(--primary); }

.wizard-solution {
    background: #052e16;
    border: 1px solid #166534;
}

.wizard-solution h2 { color: #86efac; }

/* Tables */
.knowledge-table { overflow-x: auto; }

table {
    width: 100%;
    border-collapse: collapse;
}

th, td {
    padding: 0.75rem;
    text-align: left;
    border-bottom: 1px solid var(--border);
}

th { color: var(--text-light); font-weight: 500; }
td a { color: var(--primary); text-decoration: none; }

.category-badge {
    display: inline-block;
    padding: 0.2rem 0.5rem;
    background: var(--bg);
    border-radius: 4px;
    font-size: 0.8rem;
}

/* Forms */
.form-group { margin-bottom: 1.25rem; }
.form-group label { display: block; margin-bottom: 0.5rem; font-weight: 500; }

.form-group input, .form-group select, .form-group textarea {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 2px solid var(--border);
    border-radius: var(--radius);
    font-size: 1rem;
    background: var(--bg);
    color: var(--text);
}

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

/* Login */
.login-section {
    max-width: 400px;
    margin: 2rem auto;
}

.login-form input {
    text-align: center;
    font-size: 1.5rem;
    letter-spacing: 0.5rem;
}

.login-form button { width: 100%; margin-top: 0.5rem; }

/* Settings */
.settings-card {
    background: var(--bg);
    border-radius: var(--radius);
    padding: 1rem;
    margin-bottom: 1rem;
}

.setting-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.5rem 0;
    border-bottom: 1px solid var(--border);
}

.setting-row:last-child { border: none; }
.setting-label { font-weight: 500; }
.setting-value { color: var(--text-muted); }
.setting-status { font-size: 0.85rem; }
.setting-status.active { color: var(--success); }

.settings-help {
    background: var(--bg);
    padding: 1rem;
    border-radius: var(--radius);
    margin-top: 1rem;
}

.settings-help pre {
    background: var(--card-bg);
    padding: 1rem;
    border-radius: var(--radius);
    overflow-x: auto;
    font-size: 0.85rem;
}

.test-result { margin-top: 0.5rem; font-size: 0.9rem; }
.test-result.success { color: var(--success); }
.test-result.error { color: var(--error); }

/* Unanswered */
.unanswered-card {
    background: var(--bg);
    padding: 1rem;
    border-radius: var(--radius);
    margin-bottom: 1rem;
    border-left: 3px solid var(--warning);
}

.question-meta { margin: 0.5rem 0; display: flex; gap: 1rem; }
.notified-badge {
    background: var(--success);
    color: white;
    padding: 0.2rem 0.5rem;
    border-radius: 4px;
    font-size: 0.75rem;
}

.question-actions { display: flex; gap: 0.5rem; margin-top: 0.5rem; }

/* Empty States */
.empty-state {
    text-align: center;
    padding: 3rem 1rem;
    color: var(--text-light);
}

.empty-state.success { color: var(--success); }

/* Page Header */
.page-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
}

/* Filter Bar */
.filter-bar {
    margin-bottom: 1.5rem;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.5rem;
}

.filter-chip {
    padding: 0.4rem 0.8rem;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: 20px;
    color: var(--text-light);
    text-decoration: none;
    font-size: 0.85rem;
}

.filter-chip:hover, .filter-chip.active {
    background: var(--primary);
    color: white;
    border-color: var(--primary);
}

/* Footer */
footer {
    text-align: center;
    padding: 1rem;
    color: var(--text-muted);
    font-size: 0.85rem;
    border-top: 1px solid var(--border);
}

/* Mobile */
@media (max-width: 600px) {
    .nav-links a { margin-left: 1rem; font-size: 0.85rem; }
    .logo { font-size: 0.95rem; }
    h1 { font-size: 1.3rem; }

    textarea, input, select { font-size: 16px !important; }

    .quick-buttons { flex-direction: column; }
    .quick-btn { justify-content: center; }

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

    .chat-form { flex-direction: column; }
    .chat-form button { width: 100%; }

    .dashboard-header { flex-direction: column; gap: 1rem; align-items: flex-start; }
}