/* ══════════════════════════════════════════════════════════════
   Domain Intelligence Engine — Apple-inspired minimal UI
   Clean, white, lots of breathing room. A 10-year-old could use it.
   ══════════════════════════════════════════════════════════════ */

/* ── Reset & Foundation ── */
:root {
    --intel-bg: #fafafa;
    --intel-surface: #ffffff;
    --intel-surface-hover: #f5f5f7;
    --intel-border: #e5e5ea;
    --intel-border-light: #f0f0f2;
    --intel-text: #1d1d1f;
    --intel-text-secondary: #6e6e73;
    --intel-text-tertiary: #aeaeb2;
    --intel-accent: #0071e3;
    --intel-accent-hover: #0077ed;
    --intel-accent-light: rgba(0, 113, 227, 0.08);
    --intel-green: #34c759;
    --intel-green-light: rgba(52, 199, 89, 0.08);
    --intel-red: #ff3b30;
    --intel-red-light: rgba(255, 59, 48, 0.06);
    --intel-orange: #ff9500;
    --intel-purple: #af52de;
    --intel-radius: 16px;
    --intel-radius-sm: 12px;
    --intel-radius-xs: 8px;
    --intel-shadow: 0 1px 3px rgba(0,0,0,0.04), 0 1px 2px rgba(0,0,0,0.06);
    --intel-shadow-lg: 0 4px 24px rgba(0,0,0,0.06), 0 1px 4px rgba(0,0,0,0.04);
    --intel-shadow-focus: 0 0 0 4px rgba(0, 113, 227, 0.15);
    --intel-font: -apple-system, BlinkMacSystemFont, 'SF Pro Display', 'SF Pro Text', 'Inter', 'Segoe UI', system-ui, sans-serif;
    --intel-transition: 0.2s cubic-bezier(0.25, 0.1, 0.25, 1);
}

* { box-sizing: border-box; }

.intel-page {
    min-height: 100vh;
    background: var(--intel-bg);
    font-family: var(--intel-font);
    color: var(--intel-text);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ── Top Navigation ── */
.intel-nav {
    position: sticky;
    top: 0;
    z-index: 100;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 32px;
    height: 52px;
    background: rgba(250, 250, 250, 0.85);
    backdrop-filter: saturate(180%) blur(20px);
    -webkit-backdrop-filter: saturate(180%) blur(20px);
    border-bottom: 1px solid var(--intel-border-light);
}

.intel-nav-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
    color: var(--intel-text);
}

.intel-nav-logo {
    width: 28px;
    height: 28px;
    background: var(--intel-accent);
    border-radius: 7px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 14px;
    font-weight: 700;
}

.intel-nav-title {
    font-size: 15px;
    font-weight: 600;
    letter-spacing: -0.01em;
}

.intel-nav-links {
    display: flex;
    align-items: center;
    gap: 8px;
}

.intel-nav-link {
    padding: 6px 14px;
    font-size: 13px;
    font-weight: 500;
    color: var(--intel-text-secondary);
    text-decoration: none;
    border-radius: 20px;
    transition: all var(--intel-transition);
}

.intel-nav-link:hover {
    color: var(--intel-text);
    background: var(--intel-surface-hover);
}

.intel-nav-link.active {
    color: var(--intel-accent);
    background: var(--intel-accent-light);
}

/* ── Hero / URL Input Section ── */
.intel-hero {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 80px 24px 48px;
    text-align: center;
}

.intel-hero.compact {
    padding: 40px 24px 32px;
}

.intel-hero-title {
    font-size: 40px;
    font-weight: 700;
    letter-spacing: -0.025em;
    line-height: 1.1;
    margin: 0 0 12px;
    color: var(--intel-text);
}

.intel-hero.compact .intel-hero-title {
    font-size: 28px;
}

.intel-hero-subtitle {
    font-size: 17px;
    font-weight: 400;
    color: var(--intel-text-secondary);
    margin: 0 0 40px;
    max-width: 480px;
    line-height: 1.5;
}

.intel-hero.compact .intel-hero-subtitle {
    font-size: 15px;
    margin-bottom: 28px;
}

/* ── URL Input ── */
.intel-input-wrap {
    position: relative;
    width: 100%;
    max-width: 640px;
}

.intel-input {
    width: 100%;
    padding: 16px 56px 16px 20px;
    font-size: 16px;
    font-family: var(--intel-font);
    color: var(--intel-text);
    background: var(--intel-surface);
    border: 1.5px solid var(--intel-border);
    border-radius: 14px;
    outline: none;
    transition: all var(--intel-transition);
    box-shadow: var(--intel-shadow);
}

.intel-input:focus {
    border-color: var(--intel-accent);
    box-shadow: var(--intel-shadow-focus);
}

.intel-input::placeholder {
    color: var(--intel-text-tertiary);
}

.intel-input-btn {
    position: absolute;
    right: 6px;
    top: 50%;
    transform: translateY(-50%);
    width: 40px;
    height: 40px;
    border-radius: 10px;
    border: none;
    background: var(--intel-accent);
    color: white;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--intel-transition);
}

.intel-input-btn:hover {
    background: var(--intel-accent-hover);
    transform: translateY(-50%) scale(1.05);
}

.intel-input-btn:disabled {
    background: var(--intel-text-tertiary);
    cursor: not-allowed;
    transform: translateY(-50%);
}

.intel-input-btn svg {
    width: 18px;
    height: 18px;
}

/* ── Processing Status Pill ── */
.intel-status {
    display: none;
    margin-top: 20px;
    width: 100%;
    max-width: 640px;
}

.intel-status.active {
    display: block;
}

.intel-status-card {
    background: var(--intel-surface);
    border: 1px solid var(--intel-border);
    border-radius: var(--intel-radius-sm);
    padding: 20px 24px;
    box-shadow: var(--intel-shadow);
}

.intel-status-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 16px;
}

.intel-status-icon {
    width: 36px;
    height: 36px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    flex-shrink: 0;
}

.intel-status-icon.processing {
    background: var(--intel-accent-light);
}

.intel-status-icon.complete {
    background: var(--intel-green-light);
}

.intel-status-icon.error {
    background: var(--intel-red-light);
}

.intel-status-info {
    flex: 1;
    min-width: 0;
}

.intel-status-title {
    font-size: 14px;
    font-weight: 600;
    color: var(--intel-text);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.intel-status-step {
    font-size: 12px;
    color: var(--intel-text-secondary);
    margin-top: 2px;
}

.intel-progress-track {
    width: 100%;
    height: 4px;
    background: var(--intel-border-light);
    border-radius: 2px;
    overflow: hidden;
}

.intel-progress-fill {
    height: 100%;
    background: var(--intel-accent);
    border-radius: 2px;
    transition: width 0.5s cubic-bezier(0.25, 0.1, 0.25, 1);
    width: 0%;
}

.intel-progress-fill.complete {
    background: var(--intel-green);
}

.intel-progress-fill.error {
    background: var(--intel-red);
}

/* ── Domain Grid ── */
.intel-domains-section {
    max-width: 960px;
    margin: 0 auto;
    padding: 0 24px 80px;
}

.intel-section-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 24px;
}

.intel-section-title {
    font-size: 22px;
    font-weight: 700;
    letter-spacing: -0.02em;
    color: var(--intel-text);
}

.intel-section-count {
    font-size: 13px;
    font-weight: 500;
    color: var(--intel-text-tertiary);
    background: var(--intel-surface-hover);
    padding: 4px 12px;
    border-radius: 20px;
}

.intel-domains-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 16px;
}

.intel-domain-card {
    background: var(--intel-surface);
    border: 1px solid var(--intel-border);
    border-radius: var(--intel-radius);
    padding: 24px;
    cursor: pointer;
    transition: all var(--intel-transition);
    text-decoration: none;
    color: inherit;
    display: block;
}

.intel-domain-card:hover {
    border-color: var(--intel-accent);
    box-shadow: var(--intel-shadow-lg);
    transform: translateY(-2px);
}

.intel-domain-icon {
    font-size: 32px;
    margin-bottom: 16px;
    display: block;
}

.intel-domain-name {
    font-size: 17px;
    font-weight: 600;
    letter-spacing: -0.01em;
    margin-bottom: 6px;
    color: var(--intel-text);
}

.intel-domain-desc {
    font-size: 13px;
    color: var(--intel-text-secondary);
    line-height: 1.5;
    margin-bottom: 16px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.intel-domain-stats {
    display: flex;
    gap: 16px;
    font-size: 12px;
    color: var(--intel-text-tertiary);
}

.intel-domain-stat {
    display: flex;
    align-items: center;
    gap: 4px;
}

/* ── Domain Detail View ── */
.intel-detail {
    max-width: 800px;
    margin: 0 auto;
    padding: 0 24px 80px;
}

.intel-back {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 13px;
    font-weight: 500;
    color: var(--intel-accent);
    text-decoration: none;
    padding: 8px 0;
    margin-bottom: 24px;
    transition: opacity var(--intel-transition);
}

.intel-back:hover {
    opacity: 0.7;
}

.intel-detail-header {
    margin-bottom: 32px;
}

.intel-detail-icon {
    font-size: 48px;
    margin-bottom: 16px;
}

.intel-detail-title {
    font-size: 32px;
    font-weight: 700;
    letter-spacing: -0.025em;
    margin: 0 0 8px;
}

.intel-detail-meta {
    font-size: 14px;
    color: var(--intel-text-secondary);
}

/* ── Knowledge Brief Header ── */
.intel-brief-header {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    margin-bottom: 16px;
}

.intel-brief-title {
    font-size: 18px;
    font-weight: 700;
    letter-spacing: -0.01em;
    color: var(--intel-text);
    margin: 0;
}

.intel-brief-version {
    font-size: 12px;
    color: var(--intel-text-tertiary);
    font-weight: 500;
}

/* ── Synthesis Card ── */
.intel-synthesis {
    background: var(--intel-surface);
    border: 1px solid var(--intel-border);
    border-radius: var(--intel-radius);
    padding: 32px;
    margin-bottom: 32px;
    box-shadow: var(--intel-shadow);
}

.intel-synthesis h2 {
    font-size: 18px;
    font-weight: 600;
    letter-spacing: -0.01em;
    margin: 28px 0 12px;
    color: var(--intel-text);
}

.intel-synthesis h2:first-child {
    margin-top: 0;
}

.intel-synthesis p {
    font-size: 15px;
    line-height: 1.7;
    color: var(--intel-text-secondary);
    margin: 0 0 12px;
}

.intel-synthesis ul, .intel-synthesis ol {
    padding-left: 20px;
    margin: 0 0 16px;
}

.intel-synthesis li {
    font-size: 14px;
    line-height: 1.7;
    color: var(--intel-text-secondary);
    margin-bottom: 6px;
}

.intel-synthesis strong {
    color: var(--intel-text);
    font-weight: 600;
}

.intel-synthesis blockquote {
    border-left: 3px solid var(--intel-accent);
    padding: 8px 16px;
    margin: 16px 0;
    background: var(--intel-accent-light);
    border-radius: 0 8px 8px 0;
    font-style: italic;
    color: var(--intel-text-secondary);
}

/* ── Chat / Query Section ── */
.intel-chat {
    background: var(--intel-surface);
    border: 1px solid var(--intel-border);
    border-radius: var(--intel-radius);
    overflow: hidden;
    box-shadow: var(--intel-shadow);
    margin-bottom: 32px;
}

.intel-chat-header {
    padding: 16px 24px;
    border-bottom: 1px solid var(--intel-border-light);
    font-size: 14px;
    font-weight: 600;
    color: var(--intel-text);
}

.intel-chat-messages {
    padding: 24px;
    min-height: 120px;
    max-height: 480px;
    overflow-y: auto;
}

.intel-chat-empty {
    text-align: center;
    padding: 32px 0;
    color: var(--intel-text-tertiary);
    font-size: 14px;
}

.intel-chat-msg {
    margin-bottom: 20px;
    max-width: 85%;
}

.intel-chat-msg.user {
    margin-left: auto;
    text-align: right;
}

.intel-chat-msg-label {
    font-size: 11px;
    font-weight: 600;
    color: var(--intel-text-tertiary);
    text-transform: uppercase;
    letter-spacing: 0.04em;
    margin-bottom: 6px;
}

.intel-chat-msg-bubble {
    display: inline-block;
    padding: 12px 16px;
    border-radius: 16px;
    font-size: 14px;
    line-height: 1.6;
    text-align: left;
}

.intel-chat-msg.user .intel-chat-msg-bubble {
    background: var(--intel-accent);
    color: white;
    border-bottom-right-radius: 4px;
}

.intel-chat-msg.assistant .intel-chat-msg-bubble {
    background: var(--intel-surface-hover);
    color: var(--intel-text);
    border-bottom-left-radius: 4px;
}

.intel-chat-msg-bubble strong {
    font-weight: 600;
}

.intel-chat-msg-bubble ul {
    padding-left: 16px;
    margin: 8px 0;
}

.intel-chat-msg-bubble li {
    margin-bottom: 4px;
}

.intel-chat-input-wrap {
    display: flex;
    gap: 8px;
    padding: 16px 24px;
    border-top: 1px solid var(--intel-border-light);
    background: var(--intel-bg);
}

.intel-chat-input {
    flex: 1;
    padding: 12px 16px;
    font-size: 14px;
    font-family: var(--intel-font);
    color: var(--intel-text);
    background: var(--intel-surface);
    border: 1.5px solid var(--intel-border);
    border-radius: 12px;
    outline: none;
    transition: border-color var(--intel-transition);
}

.intel-chat-input:focus {
    border-color: var(--intel-accent);
}

.intel-chat-input::placeholder {
    color: var(--intel-text-tertiary);
}

.intel-chat-send {
    padding: 12px 20px;
    font-size: 14px;
    font-weight: 600;
    font-family: var(--intel-font);
    color: white;
    background: var(--intel-accent);
    border: none;
    border-radius: 12px;
    cursor: pointer;
    transition: all var(--intel-transition);
    white-space: nowrap;
}

.intel-chat-send:hover {
    background: var(--intel-accent-hover);
}

.intel-chat-send:disabled {
    background: var(--intel-text-tertiary);
    cursor: not-allowed;
}

/* ── Sources List ── */
.intel-sources {
    margin-bottom: 32px;
}

.intel-sources-title {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 16px;
    color: var(--intel-text);
}

.intel-source-item {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 16px;
    background: var(--intel-surface);
    border: 1px solid var(--intel-border);
    border-radius: var(--intel-radius-sm);
    margin-bottom: 8px;
    transition: all var(--intel-transition);
}

.intel-source-item:hover {
    border-color: var(--intel-accent);
}

.intel-source-thumb {
    width: 80px;
    height: 45px;
    border-radius: 6px;
    object-fit: cover;
    background: var(--intel-surface-hover);
    flex-shrink: 0;
}

.intel-source-info {
    flex: 1;
    min-width: 0;
}

.intel-source-name {
    font-size: 14px;
    font-weight: 600;
    color: var(--intel-text);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.intel-source-channel {
    font-size: 12px;
    color: var(--intel-text-secondary);
    margin-top: 2px;
}

.intel-source-insights {
    font-size: 12px;
    color: var(--intel-text-tertiary);
    background: var(--intel-surface-hover);
    padding: 3px 10px;
    border-radius: 20px;
    white-space: nowrap;
}

/* ── Empty State ── */
.intel-empty {
    text-align: center;
    padding: 64px 24px;
}

.intel-empty-icon {
    font-size: 56px;
    margin-bottom: 20px;
    opacity: 0.5;
}

.intel-empty-title {
    font-size: 20px;
    font-weight: 600;
    color: var(--intel-text);
    margin-bottom: 8px;
}

.intel-empty-desc {
    font-size: 15px;
    color: var(--intel-text-secondary);
    max-width: 400px;
    margin: 0 auto;
    line-height: 1.5;
}

/* ── Loading spinner ── */
@keyframes intel-spin {
    to { transform: rotate(360deg); }
}

.intel-spinner {
    width: 18px;
    height: 18px;
    border: 2px solid var(--intel-border);
    border-top-color: var(--intel-accent);
    border-radius: 50%;
    animation: intel-spin 0.8s linear infinite;
}

.intel-spinner.white {
    border-color: rgba(255,255,255,0.3);
    border-top-color: white;
}

/* ── Typing indicator ── */
@keyframes intel-bounce {
    0%, 60%, 100% { transform: translateY(0); }
    30% { transform: translateY(-4px); }
}

.intel-typing {
    display: flex;
    gap: 4px;
    padding: 8px 4px;
}

.intel-typing-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--intel-text-tertiary);
    animation: intel-bounce 1.2s infinite;
}

.intel-typing-dot:nth-child(2) { animation-delay: 0.15s; }
.intel-typing-dot:nth-child(3) { animation-delay: 0.3s; }

/* ── Fade-in animation ── */
@keyframes intel-fadeIn {
    from { opacity: 0; transform: translateY(8px); }
    to { opacity: 1; transform: translateY(0); }
}

.intel-animate-in {
    animation: intel-fadeIn 0.4s cubic-bezier(0.25, 0.1, 0.25, 1) forwards;
}

/* ── Responsive ── */
@media (max-width: 640px) {
    .intel-hero { padding: 48px 16px 32px; }
    .intel-hero-title { font-size: 28px; }
    .intel-hero-subtitle { font-size: 15px; }
    .intel-input { padding: 14px 52px 14px 16px; font-size: 15px; }
    .intel-domains-grid { grid-template-columns: 1fr; }
    .intel-nav { padding: 0 16px; }
    .intel-detail { padding: 0 16px 48px; }
    .intel-synthesis { padding: 20px; }
}