/* tanso.bar // brutalist carbon dashboard */

:root {
    --carbon-black: #1a1a1a;
    --emission-red: #e63946;
    --warning-orange: #f4a261;
    --target-green: #2a9d8f;
    --neutral: #e9ecef;
    --goal-blue: #264653;
    --grid: rgba(233, 236, 239, 0.06);
    --grid-strong: rgba(233, 236, 239, 0.18);
    --font-data: "Roboto Mono", ui-monospace, Menlo, monospace;
    --font-body: "Roboto", system-ui, -apple-system, sans-serif;
    --font-label: "Roboto Condensed", "Roboto", system-ui, sans-serif;
}

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

html {
    scroll-behavior: smooth;
}

body {
    background: var(--carbon-black);
    color: var(--neutral);
    font-family: var(--font-body);
    font-weight: 400;
    font-size: 0.9375rem;
    line-height: 1.5;
    min-height: 100vh;
    overflow-x: hidden;
    position: relative;
}

/* horizontal grid lines covering the full page */
.grid-lines {
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: 1;
    background-image: repeating-linear-gradient(
        to bottom,
        transparent 0,
        transparent 47px,
        var(--grid) 47px,
        var(--grid) 48px
    );
}

/* fixed target line, dashed, goal blue */
.target-line {
    position: fixed;
    left: 0;
    right: 0;
    top: 70vh;
    height: 0;
    border-top: 2px dashed var(--goal-blue);
    z-index: 2;
    pointer-events: none;
}
.target-line__label {
    position: absolute;
    top: -1.4rem;
    right: 1.5rem;
    font-family: var(--font-label);
    font-size: 0.75rem;
    letter-spacing: 0.08em;
    color: var(--goal-blue);
    background: var(--carbon-black);
    padding: 0 0.5rem;
}

/* masthead */
.masthead {
    position: sticky;
    top: 0;
    z-index: 5;
    display: grid;
    grid-template-columns: auto 1fr auto;
    align-items: center;
    gap: 2rem;
    padding: 1rem 1.5rem;
    background: var(--carbon-black);
    border-bottom: 1px solid var(--grid-strong);
    font-family: var(--font-label);
    font-size: 0.75rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}
.masthead__brand {
    display: flex;
    align-items: baseline;
    gap: 0.6rem;
}
.masthead__kanji {
    font-size: 1.4rem;
    color: var(--emission-red);
    font-family: var(--font-data);
    font-weight: 700;
}
.masthead__domain {
    font-family: var(--font-data);
    font-weight: 700;
    font-size: 0.95rem;
    color: var(--neutral);
}
.masthead__nav {
    display: flex;
    gap: 1.25rem;
    flex-wrap: wrap;
    justify-content: center;
}
.masthead__nav a {
    color: var(--neutral);
    text-decoration: none;
    border-bottom: 1px solid transparent;
    padding-bottom: 2px;
    transition: border-color 0.2s, color 0.2s;
}
.masthead__nav a:hover {
    border-bottom-color: var(--emission-red);
    color: var(--emission-red);
}
.masthead__meta {
    display: flex;
    gap: 0.75rem;
    align-items: center;
}
.masthead__status {
    color: var(--carbon-black);
    background: var(--emission-red);
    padding: 0.15rem 0.5rem;
    font-weight: 700;
}
.masthead__timestamp {
    font-family: var(--font-data);
    color: var(--neutral);
}

/* common section header */
.section-header {
    display: grid;
    grid-template-columns: auto 1fr auto;
    align-items: baseline;
    gap: 1rem;
    border-bottom: 2px solid var(--neutral);
    padding: 1rem 1.5rem 0.75rem;
    font-family: var(--font-label);
    text-transform: uppercase;
}
.section-header__index {
    font-family: var(--font-data);
    font-weight: 700;
    font-size: 1.5rem;
    color: var(--emission-red);
}
.section-header__title {
    font-family: var(--font-label);
    font-weight: 700;
    font-size: 1.1rem;
    letter-spacing: 0.06em;
    color: var(--neutral);
}
.section-header__unit {
    font-size: 0.75rem;
    letter-spacing: 0.08em;
    color: var(--neutral);
    opacity: 0.65;
}

/* HERO -- numbers as hero, very tall section */
.hero {
    position: relative;
    z-index: 3;
    min-height: 95vh;
    display: grid;
    grid-template-columns: 60px 1fr;
    grid-template-rows: 1fr auto;
    padding: 4rem 1.5rem 3rem;
    border-bottom: 4px solid var(--neutral);
}
.hero__axis {
    grid-column: 1;
    grid-row: 1 / 3;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    font-family: var(--font-label);
    font-size: 0.75rem;
    color: var(--neutral);
    opacity: 0.55;
    border-right: 1px solid var(--grid-strong);
    padding-right: 0.5rem;
    text-align: right;
}
.hero__core {
    grid-column: 2;
    grid-row: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: flex-start;
    padding: 0 1rem;
}
.hero__label {
    font-family: var(--font-label);
    font-size: 0.75rem;
    letter-spacing: 0.18em;
    color: var(--emission-red);
    text-transform: uppercase;
    margin-bottom: 1.25rem;
    border-left: 4px solid var(--emission-red);
    padding-left: 0.75rem;
}
.hero__number {
    font-family: var(--font-data);
    font-weight: 700;
    font-size: clamp(3rem, 14vw, 11rem);
    line-height: 0.9;
    color: var(--neutral);
    letter-spacing: -0.02em;
    font-variant-numeric: tabular-nums;
}
.hero__unit {
    font-family: var(--font-data);
    font-weight: 400;
    font-size: 1rem;
    color: var(--neutral);
    opacity: 0.6;
    margin-top: 0.6rem;
    letter-spacing: 0.08em;
}
.hero__delta {
    margin-top: 1.5rem;
    display: flex;
    gap: 0.75rem;
    align-items: baseline;
    font-family: var(--font-data);
    font-size: 0.95rem;
}
.hero__delta-up {
    color: var(--emission-red);
    font-weight: 700;
}
.hero__delta-text {
    font-family: var(--font-label);
    font-size: 0.75rem;
    letter-spacing: 0.08em;
    color: var(--neutral);
    opacity: 0.6;
    text-transform: uppercase;
}
.hero__caption {
    grid-column: 2;
    grid-row: 2;
    padding: 1.5rem 1rem 0;
    max-width: 52ch;
    border-top: 1px solid var(--grid-strong);
}
.hero__caption p {
    font-family: var(--font-body);
    font-size: 0.9375rem;
    color: var(--neutral);
    opacity: 0.8;
}

/* BARS section -- the page-as-bar-chart */
.bars {
    position: relative;
    z-index: 3;
    background: #111;
    border-bottom: 2px solid var(--neutral);
    padding-bottom: 2rem;
}
.bars__chart {
    display: grid;
    grid-template-columns: repeat(8, 1fr);
    gap: 4px;
    align-items: flex-end;
    height: 70vh;
    min-height: 480px;
    padding: 2rem 1.5rem 0;
    border-bottom: 1px solid var(--grid-strong);
}
.bar {
    position: relative;
    height: calc(var(--h));
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    padding: 0.75rem 0.5rem;
    font-family: var(--font-label);
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--carbon-black);
    border-top: 2px solid var(--neutral);
    transform-origin: bottom;
}
.bar--red {
    background: var(--emission-red);
}
.bar--orange {
    background: var(--warning-orange);
}
.bar--green {
    background: var(--target-green);
    color: var(--neutral);
}
.bar__value {
    font-family: var(--font-data);
    font-weight: 700;
    font-size: 1rem;
    color: var(--carbon-black);
    align-self: flex-start;
}
.bar--green .bar__value {
    color: var(--neutral);
}
.bar__label {
    align-self: flex-start;
    writing-mode: horizontal-tb;
    font-weight: 700;
    font-size: 0.7rem;
}
.bars__axis {
    display: flex;
    justify-content: space-between;
    padding: 0.5rem 1.5rem 0;
    font-family: var(--font-label);
    font-size: 0.7rem;
    color: var(--neutral);
    opacity: 0.55;
    letter-spacing: 0.08em;
}

/* TIMELINE -- climate stripes */
.timeline {
    position: relative;
    z-index: 3;
    border-bottom: 2px solid var(--neutral);
    padding-bottom: 1rem;
}
.timeline__stripes {
    display: grid;
    grid-auto-flow: column;
    grid-auto-columns: 1fr;
    gap: 0;
    height: 38vh;
    min-height: 280px;
    margin: 1.5rem 1.5rem 0;
}
.timeline__stripes .stripe {
    width: 100%;
    height: 100%;
    transition: filter 0.2s;
}
.timeline__stripes .stripe:hover {
    filter: brightness(1.4);
}
.timeline__years {
    display: flex;
    justify-content: space-between;
    padding: 0.5rem 1.5rem 0;
    font-family: var(--font-label);
    font-size: 0.75rem;
    letter-spacing: 0.08em;
    color: var(--neutral);
    opacity: 0.6;
}

/* BANDS -- horizontal regional rows */
.bands {
    position: relative;
    z-index: 3;
    border-bottom: 2px solid var(--neutral);
    padding-bottom: 1rem;
}
.band {
    display: grid;
    grid-template-columns: 220px 1fr 100px;
    gap: 1rem;
    align-items: center;
    padding: 1.25rem 1.5rem;
    border-bottom: 1px solid var(--grid-strong);
    font-family: var(--font-label);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}
.band:last-child {
    border-bottom: 0;
}
.band__region {
    font-size: 0.85rem;
    color: var(--neutral);
    font-weight: 700;
}
.band__bar {
    display: block;
    height: 2.25rem;
    background: rgba(233, 236, 239, 0.04);
    border: 1px solid var(--grid-strong);
    position: relative;
    overflow: hidden;
}
.band__fill {
    display: block;
    height: 100%;
    width: var(--w);
    transform-origin: left;
    transform: scaleX(0);
}
.band--red .band__fill {
    background: var(--emission-red);
}
.band--orange .band__fill {
    background: var(--warning-orange);
}
.band--green .band__fill {
    background: var(--target-green);
}
.band__value {
    text-align: right;
    font-family: var(--font-data);
    font-weight: 700;
    font-size: 1.4rem;
    color: var(--neutral);
}
.band--red .band__value {
    color: var(--emission-red);
}
.band--orange .band__value {
    color: var(--warning-orange);
}
.band--green .band__value {
    color: var(--target-green);
}

/* LEDGER -- raw data table */
.ledger {
    position: relative;
    z-index: 3;
    border-bottom: 2px solid var(--neutral);
    padding: 0 0 2rem;
}
.ledger__table {
    width: calc(100% - 3rem);
    margin: 1.5rem 1.5rem 0;
    border-collapse: collapse;
    font-family: var(--font-data);
    font-size: 0.875rem;
}
.ledger__table thead th {
    text-align: left;
    padding: 0.6rem 0.75rem;
    border-bottom: 2px solid var(--neutral);
    font-family: var(--font-label);
    font-size: 0.75rem;
    letter-spacing: 0.08em;
    color: var(--neutral);
    text-transform: uppercase;
    background: rgba(233, 236, 239, 0.04);
}
.ledger__table tbody td {
    padding: 0.55rem 0.75rem;
    border-bottom: 1px solid var(--grid-strong);
    color: var(--neutral);
    font-variant-numeric: tabular-nums;
}
.ledger__table .num {
    text-align: right;
    font-weight: 700;
}
.ledger__table .pos {
    color: var(--emission-red);
}
.ledger__table .neg {
    color: var(--target-green);
}
.ledger__table tbody tr:hover {
    background: rgba(230, 57, 70, 0.06);
}

/* ACTIONS */
.actions {
    position: relative;
    z-index: 3;
    border-bottom: 2px solid var(--neutral);
    padding-bottom: 2rem;
}
.actions__grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 0;
    margin: 1.5rem 0 0;
    border-top: 1px solid var(--grid-strong);
}
.action {
    padding: 2rem 1.5rem;
    border-right: 1px solid var(--grid-strong);
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    min-height: 280px;
}
.action:last-child {
    border-right: 0;
}
.action__num {
    font-family: var(--font-data);
    font-weight: 700;
    font-size: 2.25rem;
    color: var(--emission-red);
    line-height: 1;
}
.action__title {
    font-family: var(--font-label);
    font-weight: 700;
    font-size: 1rem;
    letter-spacing: 0.08em;
    color: var(--neutral);
    text-transform: uppercase;
}
.action p {
    font-family: var(--font-body);
    font-size: 0.875rem;
    color: var(--neutral);
    opacity: 0.75;
    flex-grow: 1;
}
.action__btn {
    align-self: flex-start;
    background: var(--neutral);
    color: var(--carbon-black);
    border: 0;
    padding: 0.6rem 1.1rem;
    font-family: var(--font-label);
    font-weight: 700;
    font-size: 0.8rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    cursor: pointer;
    transition: background 0.18s, color 0.18s, transform 0.18s;
}
.action__btn:hover {
    background: var(--emission-red);
    color: var(--neutral);
}
.action__btn.is-active {
    background: var(--target-green);
    color: var(--carbon-black);
    transform: translateX(4px);
}

/* FOOTER */
.footer {
    position: relative;
    z-index: 3;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 0;
    padding: 1.5rem;
    border-top: 1px solid var(--grid-strong);
}
.footer__col {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
    font-family: var(--font-label);
    text-transform: uppercase;
    letter-spacing: 0.08em;
}
.footer__label {
    font-size: 0.7rem;
    color: var(--neutral);
    opacity: 0.55;
}
.footer__value {
    font-family: var(--font-data);
    font-size: 0.85rem;
    color: var(--neutral);
}

/* responsive */
@media (max-width: 900px) {
    .masthead {
        grid-template-columns: 1fr;
        gap: 0.5rem;
    }
    .masthead__nav {
        justify-content: flex-start;
    }
    .masthead__meta {
        justify-content: flex-start;
    }
    .hero {
        grid-template-columns: 36px 1fr;
    }
    .bars__chart {
        grid-template-columns: repeat(8, minmax(36px, 1fr));
        overflow-x: auto;
    }
    .actions__grid {
        grid-template-columns: 1fr;
    }
    .action {
        border-right: 0;
        border-bottom: 1px solid var(--grid-strong);
    }
    .band {
        grid-template-columns: 100px 1fr 60px;
        font-size: 0.7rem;
    }
    .footer {
        grid-template-columns: repeat(2, 1fr);
        gap: 1rem;
    }
}

@media (max-width: 560px) {
    .ledger__table {
        font-size: 0.75rem;
    }
    .ledger__table thead th,
    .ledger__table tbody td {
        padding: 0.4rem 0.4rem;
    }
}

@media (prefers-reduced-motion: reduce) {
    * {
        transition: none !important;
        animation: none !important;
    }
}