/* Tanso Center - Medical Clean Teal Institutional Aesthetic */

:root {
    --c-white: #ffffff;
    --c-teal: #0d9488;
    --c-dark: #134e4a;
    --c-light-teal: #f0fdfa;
    --c-text: #1f2937;
    --c-border: #d1d5db;
    --c-data: #0891b2;

    --c-text-muted: #4b5563;
    --c-text-soft: #6b7280;

    --font-display: "Archivo", "Inter", system-ui, sans-serif;
    --font-body: "Atkinson Hyperlegible", "Inter", system-ui, sans-serif;
    --font-mono: "IBM Plex Mono", "SFMono-Regular", Menlo, monospace;

    --max-w: 1100px;
    --radius: 6px;
    --radius-lg: 10px;

    --shadow-card: 0 1px 2px rgba(19, 78, 74, 0.04), 0 1px 1px rgba(19, 78, 74, 0.03);
    --shadow-elev: 0 4px 14px rgba(19, 78, 74, 0.07), 0 1px 3px rgba(19, 78, 74, 0.04);
}

* { box-sizing: border-box; }

html, body {
    margin: 0;
    padding: 0;
}

body {
    font-family: var(--font-body);
    color: var(--c-text);
    background: var(--c-white);
    line-height: 1.7;
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    position: relative;
    min-height: 100vh;
}

/* Molecular dot pattern background */
.molecule-bg {
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: 0;
    opacity: 0.03;
    background-image:
        radial-gradient(circle at 20% 25%, var(--c-dark) 1.2px, transparent 1.6px),
        radial-gradient(circle at 60% 35%, var(--c-dark) 1.2px, transparent 1.6px),
        radial-gradient(circle at 80% 70%, var(--c-dark) 1.2px, transparent 1.6px),
        radial-gradient(circle at 30% 75%, var(--c-dark) 1.2px, transparent 1.6px),
        radial-gradient(circle at 50% 50%, var(--c-dark) 1.2px, transparent 1.6px);
    background-size: 220px 220px;
}

.molecule-bg::after {
    content: "";
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(60deg, transparent 49.7%, var(--c-dark) 49.7%, var(--c-dark) 50.3%, transparent 50.3%),
        linear-gradient(-60deg, transparent 49.7%, var(--c-dark) 49.7%, var(--c-dark) 50.3%, transparent 50.3%);
    background-size: 220px 220px;
    opacity: 0.5;
    mask-image: radial-gradient(circle at center, #000 0 60%, transparent 70%);
}

.container {
    max-width: var(--max-w);
    margin: 0 auto;
    padding: 0 1.5rem;
    position: relative;
    z-index: 1;
}

/* ----- Typography ----- */
h1, h2, h3, h4, h5 {
    font-family: var(--font-display);
    color: var(--c-dark);
    font-weight: 700;
    margin: 0;
    line-height: 1.25;
}

p { margin: 0; }

a {
    color: var(--c-teal);
    text-decoration: none;
}
a:hover { text-decoration: underline; }

.mono { font-family: var(--font-mono); font-size: 0.85rem; }

/* ----- Header ----- */
.site-header {
    background: var(--c-white);
    border-bottom: 1px solid var(--c-border);
    position: relative;
    z-index: 5;
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: 1.1rem;
    padding-bottom: 1.1rem;
    gap: 1.5rem;
}

.brand {
    display: flex;
    align-items: center;
    gap: 0.85rem;
    color: var(--c-dark);
}
.brand:hover { text-decoration: none; }

.brand-mark {
    width: 36px;
    height: 36px;
    display: grid;
    place-items: center;
    background: var(--c-light-teal);
    border-radius: 50%;
    border: 1px solid var(--c-border);
}

.brand-text {
    display: flex;
    flex-direction: column;
    line-height: 1.1;
}
.brand-name {
    font-family: var(--font-display);
    font-weight: 700;
    font-size: 1.1rem;
    color: var(--c-dark);
    letter-spacing: -0.01em;
}
.brand-sub {
    font-size: 0.78rem;
    color: var(--c-text-soft);
    margin-top: 2px;
    letter-spacing: 0.02em;
}

.utility-nav {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}
.utility-nav a {
    color: var(--c-text-muted);
    font-size: 0.92rem;
}
.utility-nav a.btn-ghost {
    color: var(--c-teal);
    border: 1px solid var(--c-teal);
    padding: 0.5rem 0.95rem;
    border-radius: var(--radius);
    font-weight: 700;
    font-family: var(--font-display);
    font-size: 0.85rem;
    transition: background 0.15s ease, color 0.15s ease;
}
.utility-nav a.btn-ghost:hover {
    background: var(--c-teal);
    color: var(--c-white);
    text-decoration: none;
}

/* ----- Hero ----- */
.hero {
    background: linear-gradient(180deg, var(--c-light-teal) 0%, var(--c-white) 100%);
    border-bottom: 1px solid var(--c-border);
    padding: 4rem 0 3.5rem;
}

.eyebrow {
    font-family: var(--font-mono);
    font-size: 0.78rem;
    color: var(--c-data);
    text-transform: uppercase;
    letter-spacing: 0.12em;
    margin-bottom: 1.25rem;
}

.hero-title {
    font-size: clamp(1.75rem, 3.6vw, 2.75rem);
    line-height: 1.18;
    color: var(--c-dark);
    max-width: 880px;
    margin-bottom: 1.5rem;
    letter-spacing: -0.015em;
}
.hero-title .accent {
    color: var(--c-teal);
    font-style: italic;
    font-weight: 700;
}

.hero-mission {
    font-size: 1.075rem;
    line-height: 1.75;
    color: var(--c-text-muted);
    max-width: 760px;
    margin-bottom: 2.5rem;
}

.hero-stats {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 1.25rem;
    max-width: 720px;
}

.hero-stat {
    background: var(--c-white);
    border: 1px solid var(--c-border);
    border-left: 3px solid var(--c-teal);
    border-radius: var(--radius);
    padding: 1rem 1.25rem;
    display: flex;
    flex-direction: column;
}
.stat-value {
    font-family: var(--font-display);
    font-weight: 700;
    color: var(--c-dark);
    font-size: 1.6rem;
    line-height: 1.1;
}
.stat-label {
    font-size: 0.85rem;
    color: var(--c-text-soft);
    margin-top: 0.35rem;
    line-height: 1.3;
}

/* ----- Tab Nav ----- */
.tab-nav {
    background: var(--c-white);
    border-bottom: 1px solid var(--c-border);
    position: sticky;
    top: 0;
    z-index: 4;
}
.tab-inner {
    display: flex;
    gap: 2rem;
    overflow-x: auto;
}
.tab-btn {
    background: none;
    border: 0;
    padding: 1rem 0.25rem;
    font-family: var(--font-display);
    font-weight: 600;
    font-size: 0.95rem;
    color: var(--c-text-soft);
    border-bottom: 3px solid transparent;
    cursor: pointer;
    transition: color 0.15s ease, border-color 0.15s ease;
    letter-spacing: 0.01em;
    white-space: nowrap;
}
.tab-btn:hover { color: var(--c-dark); }
.tab-btn.active {
    color: var(--c-dark);
    border-bottom-color: var(--c-teal);
}

/* ----- Main / Panels ----- */
.main-content {
    padding: 3.5rem 1.5rem 4rem;
}

.tab-panel { display: none; }
.tab-panel.active { display: block; }

.panel-header {
    margin-bottom: 2.75rem;
    max-width: 760px;
}
.panel-title {
    font-size: clamp(1.65rem, 2.8vw, 2.1rem);
    margin-bottom: 0.85rem;
    letter-spacing: -0.015em;
}
.panel-lede {
    color: var(--c-text-muted);
    font-size: 1.025rem;
    line-height: 1.75;
}

.section-subhead {
    font-size: 1.2rem;
    margin: 3.5rem 0 1.5rem;
    color: var(--c-dark);
    padding-bottom: 0.6rem;
    border-bottom: 1px solid var(--c-border);
}

/* ----- Program Grid (Research) ----- */
.program-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(290px, 1fr));
    gap: 1.25rem;
}

.program-card {
    background: var(--c-white);
    border: 1px solid var(--c-border);
    border-radius: var(--radius-lg);
    padding: 1.5rem 1.5rem 1.25rem;
    box-shadow: var(--shadow-card);
    display: flex;
    flex-direction: column;
    transition: box-shadow 0.2s ease, transform 0.2s ease, border-color 0.2s ease;
}
.program-card:hover {
    box-shadow: var(--shadow-elev);
    border-color: var(--c-teal);
    transform: translateY(-1px);
}

.program-tag {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--c-data);
    letter-spacing: 0.1em;
    text-transform: uppercase;
    margin-bottom: 0.75rem;
}
.program-card h3 {
    font-size: 1.15rem;
    margin-bottom: 0.6rem;
    color: var(--c-dark);
}
.program-card > p {
    color: var(--c-text-muted);
    font-size: 0.95rem;
    margin-bottom: 1.25rem;
    flex-grow: 1;
}
.program-meta {
    list-style: none;
    margin: 0;
    padding: 1rem 0 0;
    border-top: 1px dashed var(--c-border);
    display: flex;
    flex-direction: column;
    gap: 0.45rem;
}
.program-meta li {
    display: flex;
    justify-content: space-between;
    font-family: var(--font-mono);
    font-size: 0.82rem;
    color: var(--c-text-soft);
}
.program-meta li span:last-child {
    color: var(--c-text);
}

/* ----- Highlight Cards (Research) ----- */
.highlight-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}
.highlight-card {
    display: grid;
    grid-template-columns: 6px 1fr;
    background: var(--c-white);
    border: 1px solid var(--c-border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-card);
    transition: box-shadow 0.2s ease, transform 0.2s ease;
}
.highlight-card:hover {
    box-shadow: var(--shadow-elev);
    transform: translateY(-1px);
}
.highlight-bar {
    background: var(--c-teal);
    display: block;
}
.highlight-body {
    padding: 1.4rem 1.5rem 1.5rem;
}
.highlight-meta {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 0.6rem;
    font-family: var(--font-mono);
    font-size: 0.78rem;
    color: var(--c-text-soft);
    text-transform: uppercase;
    letter-spacing: 0.08em;
}
.highlight-journal { color: var(--c-data); font-weight: 500; }
.highlight-card h4 {
    font-size: 1.1rem;
    margin-bottom: 0.65rem;
    line-height: 1.35;
    color: var(--c-dark);
}
.highlight-card .abstract {
    color: var(--c-text-muted);
    font-size: 0.95rem;
    line-height: 1.7;
    margin-bottom: 0.85rem;
}
.read-link {
    font-family: var(--font-display);
    font-size: 0.88rem;
    font-weight: 600;
    color: var(--c-teal);
}

/* ----- Education ----- */
.course-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(290px, 1fr));
    gap: 1.25rem;
}
.course-card {
    background: var(--c-white);
    border: 1px solid var(--c-border);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    box-shadow: var(--shadow-card);
    transition: box-shadow 0.2s ease, transform 0.2s ease, border-color 0.2s ease;
}
.course-card:hover {
    box-shadow: var(--shadow-elev);
    border-color: var(--c-teal);
    transform: translateY(-1px);
}
.course-level {
    display: inline-block;
    background: var(--c-light-teal);
    color: var(--c-dark);
    font-family: var(--font-mono);
    font-size: 0.72rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    padding: 0.3rem 0.6rem;
    border-radius: 999px;
    margin-bottom: 1rem;
    border: 1px solid var(--c-teal);
}
.course-card h3 {
    font-size: 1.15rem;
    margin-bottom: 0.6rem;
}
.course-card p {
    color: var(--c-text-muted);
    font-size: 0.95rem;
    margin-bottom: 1.25rem;
}
.course-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 0.5rem;
    margin: 0;
    padding-top: 1rem;
    border-top: 1px dashed var(--c-border);
}
.course-stats > div {
    display: flex;
    flex-direction: column;
    gap: 0.2rem;
}
.course-stats dt {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    color: var(--c-text-soft);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    margin: 0;
}
.course-stats dd {
    font-family: var(--font-display);
    font-weight: 700;
    color: var(--c-dark);
    font-size: 0.95rem;
    margin: 0;
}

.callout {
    margin-top: 3rem;
    background: var(--c-light-teal);
    border: 1px solid var(--c-teal);
    border-radius: var(--radius-lg);
    padding: 2rem 2.25rem;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 0.75rem;
}
.callout h3 {
    font-size: 1.2rem;
    color: var(--c-dark);
}
.callout p {
    color: var(--c-text-muted);
    max-width: 640px;
}
.btn-primary {
    background: var(--c-teal);
    color: var(--c-white);
    padding: 0.7rem 1.25rem;
    border-radius: var(--radius);
    font-family: var(--font-display);
    font-weight: 700;
    font-size: 0.9rem;
    border: 0;
    cursor: pointer;
    transition: background 0.15s ease;
    display: inline-block;
    margin-top: 0.5rem;
}
.btn-primary:hover {
    background: var(--c-dark);
    text-decoration: none;
    color: var(--c-white);
}

/* ----- Data / Infographics ----- */
.infographic-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 1.25rem;
}
.infographic-card {
    background: var(--c-white);
    border: 1px solid var(--c-border);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    box-shadow: var(--shadow-card);
    display: flex;
    flex-direction: column;
}
.infographic-number {
    font-family: var(--font-display);
    font-weight: 700;
    color: var(--c-dark);
    font-size: 2rem;
    line-height: 1.1;
    margin-bottom: 0.4rem;
}
.infographic-number span {
    font-family: var(--font-mono);
    font-weight: 400;
    font-size: 0.85rem;
    color: var(--c-text-soft);
    margin-left: 0.35rem;
}
.infographic-label {
    color: var(--c-text-muted);
    font-size: 0.92rem;
    line-height: 1.5;
    margin-bottom: 1.1rem;
    min-height: 2.6em;
}
.info-svg {
    width: 100%;
    height: 80px;
    overflow: visible;
    margin-bottom: 0.75rem;
}
.info-svg .trend-line {
    fill: none;
    stroke: var(--c-data);
    stroke-width: 2;
    stroke-linecap: round;
    stroke-linejoin: round;
    stroke-dasharray: 400;
    stroke-dashoffset: 400;
    animation: draw 1.4s ease-out forwards;
}
.info-svg .axis {
    stroke: var(--c-border);
    stroke-width: 1;
}
.info-svg .bar {
    fill: var(--c-teal);
    transform-origin: bottom;
    animation: rise 0.9s cubic-bezier(0.2, 0.7, 0.2, 1) forwards;
    transform: scaleY(0);
}
.info-svg .bar.bar-2 {
    fill: var(--c-data);
    animation-delay: 0.15s;
}
.info-svg .bar:nth-child(1) { animation-delay: 0.05s; }
.info-svg .bar:nth-child(3) { animation-delay: 0.25s; }
.info-svg .bar:nth-child(5) { animation-delay: 0.35s; }

.info-svg.donut {
    width: 96px;
    height: 96px;
    align-self: center;
}
.donut-track {
    fill: none;
    stroke: var(--c-light-teal);
    stroke-width: 12;
}
.donut-fill {
    fill: none;
    stroke: var(--c-teal);
    stroke-width: 12;
    stroke-linecap: round;
    transform: rotate(-90deg);
    transform-origin: center;
    stroke-dasharray: calc(2 * 3.14159 * 32);
    stroke-dashoffset: calc(2 * 3.14159 * 32 * (1 - var(--pct) / 100));
}

.dot-network circle {
    fill: var(--c-teal);
}
.dot-network line {
    stroke: var(--c-data);
    stroke-width: 1;
    stroke-dasharray: 2 2;
    opacity: 0.7;
}

.info-foot {
    margin-top: auto;
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--c-text-soft);
    padding-top: 0.5rem;
    border-top: 1px dashed var(--c-border);
}

@keyframes draw {
    to { stroke-dashoffset: 0; }
}
@keyframes rise {
    to { transform: scaleY(1); }
}

/* ----- Dataset Table ----- */
.dataset-table {
    border: 1px solid var(--c-border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    background: var(--c-white);
}
.dataset-row {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.2fr 1.5fr;
    gap: 1rem;
    padding: 0.95rem 1.25rem;
    border-bottom: 1px solid var(--c-border);
    font-size: 0.92rem;
    align-items: center;
}
.dataset-row:last-child { border-bottom: 0; }
.dataset-head {
    background: var(--c-light-teal);
    font-family: var(--font-display);
    font-weight: 700;
    font-size: 0.78rem;
    color: var(--c-dark);
    text-transform: uppercase;
    letter-spacing: 0.08em;
}
.dataset-row:not(.dataset-head):hover {
    background: var(--c-light-teal);
}
.endpoint {
    font-family: var(--font-mono);
    font-size: 0.82rem;
    color: var(--c-data);
}

/* ----- About / Team ----- */
.team-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 1.25rem;
}
.team-card {
    background: var(--c-white);
    border: 1px solid var(--c-border);
    border-radius: var(--radius-lg);
    padding: 1.5rem 1.25rem;
    text-align: center;
    box-shadow: var(--shadow-card);
    transition: box-shadow 0.2s ease, transform 0.2s ease, border-color 0.2s ease;
}
.team-card:hover {
    box-shadow: var(--shadow-elev);
    border-color: var(--c-teal);
    transform: translateY(-1px);
}
.avatar {
    width: 72px;
    height: 72px;
    border-radius: 50%;
    background: var(--c-teal);
    color: var(--c-white);
    font-family: var(--font-display);
    font-weight: 700;
    font-size: 1.4rem;
    display: grid;
    place-items: center;
    margin: 0 auto 1rem;
    letter-spacing: 0.02em;
    border: 3px solid var(--c-light-teal);
    box-shadow: 0 0 0 1px var(--c-teal);
}
.team-card h4 {
    font-size: 1rem;
    margin-bottom: 0.25rem;
}
.team-role {
    font-family: var(--font-mono);
    font-size: 0.78rem;
    color: var(--c-data);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    margin-bottom: 0.5rem;
}
.team-area {
    font-size: 0.88rem;
    color: var(--c-text-muted);
    line-height: 1.5;
}

.about-pillars {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 1.25rem;
    margin-top: 3rem;
}
.pillar {
    background: var(--c-light-teal);
    border-left: 3px solid var(--c-teal);
    border-radius: 0 var(--radius) var(--radius) 0;
    padding: 1.25rem 1.5rem;
}
.pillar h4 {
    font-family: var(--font-mono);
    font-weight: 500;
    font-size: 0.85rem;
    color: var(--c-dark);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    margin-bottom: 0.5rem;
}
.pillar p {
    color: var(--c-text-muted);
    font-size: 0.92rem;
    line-height: 1.6;
}

/* ----- Footer ----- */
.site-footer {
    background: var(--c-dark);
    color: var(--c-light-teal);
    margin-top: 4rem;
    padding: 3rem 0 1.75rem;
    position: relative;
    z-index: 2;
}
.footer-inner {
    display: flex;
    flex-direction: column;
    gap: 2.5rem;
}
.footer-brand .brand-name {
    color: var(--c-white);
    font-size: 1.2rem;
}
.footer-brand p {
    color: rgba(240, 253, 250, 0.75);
    font-size: 0.92rem;
    margin-top: 0.4rem;
}
.footer-meta {
    font-family: var(--font-mono);
    font-size: 0.78rem !important;
    color: rgba(240, 253, 250, 0.5) !important;
    margin-top: 0.6rem !important;
}

.footer-cols {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
    gap: 1.5rem;
}
.footer-col {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}
.footer-col h5 {
    font-family: var(--font-display);
    font-weight: 700;
    font-size: 0.78rem;
    color: var(--c-white);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 0.4rem;
}
.footer-col a {
    color: rgba(240, 253, 250, 0.78);
    font-size: 0.92rem;
}
.footer-col a:hover {
    color: var(--c-white);
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 1.5rem;
    border-top: 1px solid rgba(240, 253, 250, 0.15);
    font-size: 0.82rem;
    color: rgba(240, 253, 250, 0.55);
    flex-wrap: wrap;
    gap: 0.5rem;
}
.footer-bottom .mono {
    font-family: var(--font-mono);
    color: rgba(240, 253, 250, 0.45);
}

/* ----- Responsive ----- */
@media (max-width: 768px) {
    .hero { padding: 2.5rem 0; }
    .hero-stats { grid-template-columns: 1fr; }
    .header-inner { flex-direction: column; align-items: flex-start; gap: 1rem; }
    .utility-nav { gap: 1rem; flex-wrap: wrap; }
    .dataset-row {
        grid-template-columns: 1fr 1fr;
        gap: 0.5rem;
    }
    .dataset-head { display: none; }
    .dataset-row:not(.dataset-head) span:nth-child(1) {
        grid-column: 1 / -1;
        font-family: var(--font-display);
        font-weight: 700;
        color: var(--c-dark);
    }
    .footer-bottom { flex-direction: column; align-items: flex-start; }
}

@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.001ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.001ms !important;
    }
}