/* Zero One Brand CSS — from ZeroOneWebsite2026 design system */

:root {
    --navy: #0C0818;
    --navy-dark: #060410;
    --navy-light: #150F26;
    --orange: #D4713B;
    --orange-dark: #B85D2E;
    --orange-light: #E8915E;
    --white: #F5F6F8;
    --gray-100: #E5E7EB;
    --gray-200: #d1d5db;
    --gray-400: #9CA3AF;
    --gray-600: #6B7280;
    --text: #1A1A2E;
    --text-secondary: #6B7280;
    --text-muted: #9CA3AF;
    --success: #22c55e;
    --warning: #eab308;
    --danger: #ef4444;
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: var(--white);
    color: var(--text);
    line-height: 1.6;
}

/* Nav */
nav {
    background: var(--navy);
    padding: 0 2rem;
    display: flex;
    align-items: center;
    height: 56px;
    position: sticky;
    top: 0;
    z-index: 100;
}

nav .logo {
    text-decoration: none;
    display: flex;
    align-items: center;
}

nav .nav-logo {
    height: 22px;
    width: 110px;
    object-fit: contain;
}

nav ul {
    list-style: none;
    display: flex;
    gap: 0.25rem;
    margin-left: 2rem;
}

nav a {
    color: var(--gray-200);
    text-decoration: none;
    padding: 0.5rem 1rem;
    border-radius: 6px;
    font-size: 0.875rem;
    transition: background 0.15s, color 0.15s;
}

nav a:hover, nav a.active {
    background: var(--navy-light);
    color: #fff;
}

/* Layout */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem;
}

h1 {
    font-size: 1.75rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    color: var(--navy);
}

h2 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
    color: var(--navy);
}

/* Stats cards */
.stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    margin-bottom: 2rem;
}

.stat-card {
    background: #fff;
    border: 1px solid var(--gray-100);
    border-radius: 10px;
    padding: 1.25rem;
}

.stat-card .label {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--gray-600);
    margin-bottom: 0.25rem;
}

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

.stat-card .value.orange { color: var(--orange); }

/* Cards */
.card {
    background: #fff;
    border: 1px solid var(--gray-100);
    border-radius: 10px;
    padding: 1.5rem;
    margin-bottom: 1.5rem;
}

/* Article list */
.article-list { list-style: none; }

.article-item {
    padding: 0.75rem 0;
    border-bottom: 1px solid var(--gray-100);
    display: flex;
    gap: 1rem;
    align-items: baseline;
}

.article-item:last-child { border-bottom: none; }

.article-item .title a {
    color: var(--navy);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.9375rem;
}

.article-item .title a:hover {
    color: var(--orange);
}

.article-item .meta {
    font-size: 0.75rem;
    color: var(--gray-600);
    white-space: nowrap;
}

/* Tags / badges */
.badge {
    display: inline-block;
    padding: 0.125rem 0.5rem;
    border-radius: 999px;
    font-size: 0.6875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.3px;
}

.badge-ai { background: #dbeafe; color: #1e40af; }
.badge-semi { background: #fef3c7; color: #92400e; }
.badge-hw { background: #d1fae5; color: #065f46; }
.badge-zh { background: #fce7f3; color: #9d174d; }
.badge-en { background: #e0e7ff; color: #3730a3; }
.badge-draft { background: var(--gray-100); color: var(--gray-600); }
.badge-published { background: #d1fae5; color: #065f46; }

/* Buttons */
.btn {
    display: inline-block;
    padding: 0.5rem 1.25rem;
    border: none;
    border-radius: 8px;
    font-size: 0.875rem;
    font-weight: 600;
    cursor: pointer;
    text-decoration: none;
    transition: background 0.15s, transform 0.1s;
}

.btn:active { transform: scale(0.97); }

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

.btn-primary:hover { background: var(--orange-light); }

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

.btn-secondary:hover { background: var(--navy-light); }

.btn-outline {
    background: transparent;
    border: 1.5px solid var(--navy);
    color: var(--navy);
}

.btn-outline:hover { background: var(--navy); color: #fff; }

/* Filters */
.filters {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
    margin-bottom: 1.5rem;
}

.filters select, .filters input {
    padding: 0.4rem 0.75rem;
    border: 1px solid var(--gray-200);
    border-radius: 6px;
    font-size: 0.875rem;
    background: #fff;
}

/* ================================================================
   Digest — 01.co research article style
   ================================================================ */

/* Hero header */
.digest-hero {
    background: var(--navy);
    margin: -2rem -2rem 0;
    padding: 2rem 2rem 2.5rem;
}

.digest-hero-inner {
    max-width: 1200px;
    margin: 0 auto;
}

.digest-nav-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
}

.digest-back {
    color: var(--gray-400);
    text-decoration: none;
    font-size: 0.8125rem;
    transition: color 0.15s;
}

.digest-back:hover { color: #fff; }

.digest-controls {
    display: flex;
    gap: 0.5rem;
    align-items: center;
}

.digest-date-select {
    padding: 0.35rem 0.6rem;
    border: 1px solid rgba(255,255,255,0.2);
    border-radius: 6px;
    font-size: 0.8125rem;
    background: rgba(255,255,255,0.08);
    color: #fff;
}

.digest-date-select option { color: var(--text); background: #fff; }

.btn-sm { padding: 0.35rem 0.9rem; font-size: 0.8125rem; }

.digest-category-badge {
    display: inline-block;
    border: 1.5px solid var(--orange);
    color: var(--orange);
    padding: 0.2rem 0.75rem;
    border-radius: 4px;
    font-size: 0.6875rem;
    font-weight: 700;
    letter-spacing: 1.2px;
    text-transform: uppercase;
    margin-bottom: 1rem;
}

.digest-title {
    font-family: 'Source Serif 4', 'Georgia', serif;
    font-size: 2.25rem;
    font-weight: 700;
    color: #fff;
    line-height: 1.2;
    margin-bottom: 0.75rem;
}

.digest-meta {
    color: var(--gray-400);
    font-size: 0.8125rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.digest-meta-sep { opacity: 0.4; }

/* Two-column layout: news left, movers right */
.digest-layout {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2.5rem 2rem 2rem;
    display: grid;
    grid-template-columns: 1fr 280px;
    gap: 2.5rem;
    align-items: start;
}

/* Body column (left — news) */
.digest-body {
    min-width: 0;
}

/* Key Takeaways — orange left border callout */
.digest-takeaways {
    border-left: 4px solid var(--orange);
    background: #fff;
    border-radius: 0 8px 8px 0;
    padding: 1.5rem 1.5rem 1.5rem 1.75rem;
    margin-bottom: 2rem;
    box-shadow: 0 1px 4px rgba(0,0,0,0.04);
}

.digest-takeaways-title {
    font-family: 'Source Serif 4', 'Georgia', serif;
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--navy);
    margin-bottom: 0.75rem;
}

.digest-takeaways-list {
    list-style: none;
    padding: 0;
}

.digest-takeaways-list li {
    position: relative;
    padding-left: 1.25rem;
    margin-bottom: 0.5rem;
    font-size: 0.9375rem;
    color: var(--text);
    line-height: 1.55;
}

.digest-takeaways-list li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0.55em;
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--orange);
}

/* Stats row */
.digest-stats-row {
    display: flex;
    gap: 1.5rem;
    margin-bottom: 2.5rem;
    padding-bottom: 2rem;
    border-bottom: 1px solid var(--gray-100);
}

.digest-stat { text-align: center; flex: 1; }

.digest-stat-value {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--navy);
    line-height: 1;
    margin-bottom: 0.25rem;
}

.digest-stat-value.orange { color: var(--orange); }

.digest-stat-label {
    font-size: 0.6875rem;
    text-transform: uppercase;
    letter-spacing: 0.6px;
    color: var(--gray-600);
}

/* Digest article content */
.digest-content {
    font-family: 'Source Serif 4', 'Georgia', serif;
    font-size: 1.0625rem;
    line-height: 1.8;
    color: var(--text);
}

.digest-content h1 {
    font-family: 'Source Serif 4', 'Georgia', serif;
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--navy);
    margin: 2.5rem 0 1rem;
    line-height: 1.25;
    display: none; /* hide the main h1 since we have the hero */
}

.digest-content h2 {
    font-family: 'Inter', sans-serif;
    font-size: 0.6875rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1.2px;
    color: var(--orange);
    margin: 2.5rem 0 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid var(--gray-100);
}

.digest-content h3 {
    font-family: 'Source Serif 4', 'Georgia', serif;
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--navy);
    margin: 1.5rem 0 0.5rem;
}

.digest-content p {
    margin-bottom: 1rem;
}

.digest-content ul, .digest-content ol {
    padding-left: 1.25rem;
    margin-bottom: 1.25rem;
}

.digest-content li {
    margin-bottom: 0.6rem;
    line-height: 1.7;
}

.digest-content strong {
    color: var(--navy);
    font-weight: 600;
}

.digest-content a {
    color: var(--orange);
    text-decoration: none;
    border-bottom: 1px solid transparent;
    transition: border-color 0.15s;
}

.digest-content a:hover {
    border-bottom-color: var(--orange);
}

/* Tables — clean minimal */
.digest-content table {
    width: 100%;
    border-collapse: collapse;
    margin: 1.5rem 0;
    font-family: 'Inter', sans-serif;
    font-size: 0.8125rem;
    line-height: 1.5;
}

.digest-content thead { border-bottom: 2px solid var(--navy); }

.digest-content th {
    background: transparent;
    color: var(--navy);
    text-align: left;
    padding: 0.6rem 0.75rem;
    font-weight: 700;
    font-size: 0.6875rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.digest-content td {
    padding: 0.6rem 0.75rem;
    border-bottom: 1px solid var(--gray-100);
    vertical-align: top;
}

.digest-content tr:hover td {
    background: rgba(212, 113, 59, 0.03);
}

/* Empty state */
.digest-empty {
    text-align: center;
    padding: 4rem 2rem;
    color: var(--gray-400);
}

.digest-empty code {
    display: inline-block;
    margin-top: 0.75rem;
    background: var(--gray-100);
    padding: 0.5rem 1rem;
    border-radius: 6px;
    font-size: 0.875rem;
    color: var(--text);
}

/* Responsive */
@media (max-width: 768px) {
    .digest-hero { margin: -1rem -1rem 0; padding: 1.5rem 1rem 2rem; }
    .digest-title { font-size: 1.5rem; }
    .digest-stats-row { gap: 0.75rem; }
    .digest-stat-value { font-size: 1.25rem; }
    .digest-nav-row { flex-direction: column; align-items: flex-start; gap: 0.5rem; }
}

/* ================================================================
   Heatmap
   ================================================================ */

.heatmap-header {
    display: flex;
    align-items: baseline;
    gap: 1rem;
    padding: 1rem 2rem 0.5rem;
}

.heatmap-header h1 {
    margin-bottom: 0;
    font-size: 1.5rem;
}

.heatmap-tabs {
    display: flex;
    gap: 0.25rem;
    background: var(--gray-100);
    border-radius: 8px;
    padding: 3px;
}

.heatmap-tab {
    padding: 0.35rem 1rem;
    border: none;
    border-radius: 6px;
    font-size: 0.8125rem;
    font-weight: 600;
    font-family: 'Inter', sans-serif;
    cursor: pointer;
    background: transparent;
    color: var(--gray-600);
    transition: all 0.15s;
}

.heatmap-tab:hover {
    color: var(--navy);
}

.heatmap-tab.active {
    background: var(--navy);
    color: #fff;
    box-shadow: 0 1px 3px rgba(0,0,0,0.15);
}

.heatmap-toggle {
    display: flex;
    align-items: center;
    gap: 0.375rem;
    font-size: 0.8125rem;
    font-weight: 500;
    color: var(--gray-600);
    cursor: pointer;
    user-select: none;
}

.heatmap-toggle input[type="checkbox"] {
    accent-color: var(--orange);
    width: 14px;
    height: 14px;
    cursor: pointer;
}

.heatmap-subtitle {
    font-size: 0.8125rem;
    color: var(--gray-600);
}

.heatmap-legend {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0 2rem 0.75rem;
}

.heatmap-legend-label {
    font-size: 0.6875rem;
    font-weight: 600;
    color: var(--gray-600);
}

.heatmap-legend-bar {
    width: 240px;
    height: 12px;
    border-radius: 6px;
    background: linear-gradient(to right, #dc2626, #fca5a5, #e5e7eb, #86efac, #16a34a);
}

.heatmap-container {
    width: 100%;
    height: calc(100vh - 140px);
    overflow: hidden;
}

.heatmap-container svg {
    display: block;
}

.heatmap-tooltip {
    position: absolute;
    z-index: 200;
    background: var(--navy);
    color: #fff;
    padding: 0.75rem 1rem;
    border-radius: 8px;
    font-size: 0.8125rem;
    line-height: 1.5;
    box-shadow: 0 4px 20px rgba(0,0,0,0.3);
    pointer-events: none;
    max-width: 280px;
}

.heatmap-tooltip .tooltip-name {
    font-weight: 700;
    font-size: 0.875rem;
    margin-bottom: 0.125rem;
}

.heatmap-tooltip .tooltip-ticker {
    color: var(--gray-400);
    font-size: 0.75rem;
    margin-bottom: 0.375rem;
}

.heatmap-tooltip .tooltip-change {
    font-weight: 700;
    font-size: 1rem;
    margin-bottom: 0.125rem;
}

.heatmap-tooltip .tooltip-mcap {
    color: var(--gray-200);
    font-size: 0.75rem;
}

.heatmap-tooltip .tooltip-sector {
    color: var(--gray-400);
    font-size: 0.6875rem;
    margin-top: 0.25rem;
    text-transform: capitalize;
}

.heatmap-empty {
    text-align: center;
    padding: 4rem 2rem;
    color: var(--gray-400);
}

.heatmap-empty code {
    display: inline-block;
    margin-top: 0.5rem;
    background: var(--gray-100);
    padding: 0.4rem 0.8rem;
    border-radius: 6px;
    font-size: 0.875rem;
    color: var(--text);
}

/* ================================================================
   Company Tag Cloud
   ================================================================ */

.digest-companies {
    margin: 1.5rem 0;
    padding: 1rem 1.25rem;
    background: #f8f9fb;
    border-radius: 8px;
    border: 1px solid var(--gray-100);
}

.digest-companies-title {
    font-family: 'Inter', sans-serif;
    font-size: 0.625rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--gray-400);
    margin-bottom: 0.625rem;
}

.digest-tag-cloud {
    display: flex;
    flex-wrap: wrap;
    gap: 0.375rem;
}

.digest-company-tag {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    padding: 0.25rem 0.5rem;
    background: #fff;
    border: 1px solid var(--gray-100);
    border-radius: 4px;
    font-family: 'Inter', sans-serif;
    font-size: 0.6875rem;
    font-weight: 500;
    color: var(--navy);
    white-space: nowrap;
}

.digest-company-tag .tag-ticker {
    font-size: 0.5625rem;
    font-weight: 400;
    color: var(--gray-400);
}

/* ================================================================
   Digest Tabs (Global / Taiwan)
   ================================================================ */

.digest-tabs {
    display: flex;
    gap: 0;
    margin: 1.5rem 0 0;
    border-bottom: 2px solid var(--gray-100);
}

.digest-tab {
    padding: 0.5rem 1.25rem;
    font-family: 'Inter', sans-serif;
    font-size: 0.8125rem;
    font-weight: 600;
    color: var(--gray-400);
    background: none;
    border: none;
    border-bottom: 2px solid transparent;
    margin-bottom: -2px;
    cursor: pointer;
    transition: color 0.15s, border-color 0.15s;
}

.digest-tab:hover {
    color: var(--navy);
}

.digest-tab.active {
    color: var(--navy);
    border-bottom-color: var(--orange);
}

.digest-tab-content {
    display: none;
}

.digest-tab-content.active {
    display: block;
}

/* ================================================================
   Movers Sidebar (right column)
   ================================================================ */

.movers-sidebar {
    position: sticky;
    top: 72px;
    max-height: calc(100vh - 88px);
    overflow-y: auto;
}

.movers-sidebar-inner {
    background: #fff;
    border: 1px solid var(--gray-100);
    border-radius: 10px;
    padding: 1rem 1rem 0.75rem;
    box-shadow: 0 1px 4px rgba(0,0,0,0.04);
}

.movers-sidebar-title {
    font-family: 'Inter', sans-serif;
    font-size: 0.6875rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1.2px;
    color: var(--orange);
    margin-bottom: 0.25rem;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid var(--gray-100);
}

.movers-sidebar-date {
    font-size: 0.625rem;
    color: var(--gray-400);
    margin-bottom: 0.75rem;
}

.movers-sidebar-block {
    margin-bottom: 1rem;
}

.movers-sidebar-block:last-child {
    margin-bottom: 0;
}

.movers-sidebar-market {
    font-family: 'Inter', sans-serif;
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--navy);
    margin-bottom: 0.375rem;
}

.movers-sidebar-heading {
    font-family: 'Inter', sans-serif;
    font-size: 0.625rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    padding-bottom: 0.25rem;
    margin-bottom: 0.125rem;
    margin-top: 0.5rem;
}

.movers-sidebar-heading.gain {
    color: #16a34a;
    border-bottom: 1.5px solid #16a34a;
}

.movers-sidebar-heading.loss {
    color: #dc2626;
    border-bottom: 1.5px solid #dc2626;
}

.movers-sidebar-list {
    display: flex;
    flex-direction: column;
}

.msb-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.3rem 0;
    border-bottom: 1px solid var(--gray-100);
}

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

.msb-info {
    display: flex;
    flex-direction: column;
    min-width: 0;
    flex: 1;
}

.msb-name {
    font-weight: 600;
    font-size: 0.75rem;
    color: var(--navy);
    line-height: 1.3;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.msb-ticker {
    font-size: 0.625rem;
    color: var(--gray-400);
}

.msb-change {
    font-family: 'Inter', sans-serif;
    font-size: 0.75rem;
    font-weight: 700;
    white-space: nowrap;
    flex-shrink: 0;
    margin-left: 0.5rem;
}

.msb-change.gain { color: #16a34a; }
.msb-change.loss { color: #dc2626; }

/* Responsive: stack layout on smaller screens */
@media (max-width: 1024px) {
    .digest-layout {
        grid-template-columns: 1fr;
    }
    .movers-sidebar {
        position: static;
        order: -1;
    }
}

/* Footer */
footer {
    text-align: center;
    padding: 2rem;
    color: var(--gray-400);
    font-size: 0.8125rem;
}

/* Responsive */
@media (max-width: 768px) {
    nav { padding: 0 1rem; }
    .container { padding: 1rem; }
    .stats { grid-template-columns: repeat(2, 1fr); }
    .article-item { flex-direction: column; gap: 0.25rem; }
}