/* ──────────────────────────────────────────────────
   Battery Storage Market Dashboard v2 — Styles
   Redesigned: narrative scroll + sticky nav
   Skills: ui-ux-pro-max, frontend-design, scroll-experience
   ────────────────────────────────────────────────── */

:root {
    /* Palette: Energy / Battery */
    --bg-deep: #07090f;
    --bg-card: #0d1117;
    --bg-surface: #161b22;
    --border: rgba(148, 163, 184, 0.08);
    --text: #e2e8f0;
    --text-muted: #64748b;
    --text-dim: #475569;

    /* Accent colours */
    --amber: #f59e0b;
    --amber-glow: rgba(245, 158, 11, 0.12);
    --solar: #facc15;
    --solar-glow: rgba(250, 204, 21, 0.12);
    --green: #22c55e;
    --green-glow: rgba(34, 197, 94, 0.12);
    --blue: #3b82f6;
    --blue-glow: rgba(59, 130, 246, 0.12);
    --rose: #f43f5e;
    --rose-glow: rgba(244, 63, 94, 0.12);
    --ev-cyan: #06b6d4;
    --ev-glow: rgba(6, 182, 212, 0.12);
    --violet: #8b5cf6;
    --violet-glow: rgba(139, 92, 246, 0.12);

    /* Layout */
    --radius: 14px;
    --radius-sm: 8px;
    --max-w: 1360px;
    --nav-h: 56px;
}

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

html {
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
    background: var(--bg-deep);
    color: var(--text);
    scroll-behavior: smooth;
    scroll-padding-top: calc(var(--nav-h) + 24px);
}

body {
    min-height: 100vh;
    position: relative;
    overflow-x: hidden;
}

a {
    color: var(--amber);
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

/* ─── Background FX ─── */
.bg-grid {
    position: fixed;
    inset: 0;
    z-index: 0;
    background-image:
        linear-gradient(rgba(245, 158, 11, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(245, 158, 11, 0.03) 1px, transparent 1px);
    background-size: 60px 60px;
    pointer-events: none;
}

.bg-glow {
    position: fixed;
    border-radius: 50%;
    filter: blur(120px);
    pointer-events: none;
    z-index: 0;
}

.bg-glow--1 {
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(245, 158, 11, 0.08), transparent 70%);
    top: -200px;
    right: -100px;
}

.bg-glow--2 {
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(6, 182, 212, 0.06), transparent 70%);
    bottom: -200px;
    left: -100px;
}

/* ─── Sticky Navigation ─── */
.sticky-nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    background: rgba(7, 9, 15, 0.75);
    backdrop-filter: blur(20px) saturate(1.6);
    -webkit-backdrop-filter: blur(20px) saturate(1.6);
    border-bottom: 1px solid var(--border);
    transform: translateY(-100%);
    transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

.sticky-nav.visible {
    transform: translateY(0);
}

.sticky-nav__inner {
    max-width: var(--max-w);
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: var(--nav-h);
    padding: 0 1.5rem;
}

.sticky-nav__logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--amber);
    white-space: nowrap;
}

.sticky-nav__logo svg {
    stroke: var(--amber);
}

.sticky-nav__links {
    display: flex;
    gap: 0.25rem;
}

.sticky-nav__link {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-muted);
    padding: 0.4rem 0.85rem;
    border-radius: 999px;
    transition: all 0.2s;
    text-decoration: none;
    cursor: pointer;
}

.sticky-nav__link:hover {
    color: var(--text);
    background: rgba(255, 255, 255, 0.05);
    text-decoration: none;
}

.sticky-nav__link.active {
    color: var(--amber);
    background: var(--amber-glow);
}

.sticky-nav__badge {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    font-size: 0.7rem;
    font-weight: 700;
    color: var(--green);
    text-transform: uppercase;
    letter-spacing: 0.06em;
}

.pulse-dot {
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: var(--green);
    animation: pulse 2s infinite;
}

@keyframes pulse {

    0%,
    100% {
        opacity: 1;
    }

    50% {
        opacity: 0.3;
    }
}

/* ─── Header ─── */
.header {
    position: relative;
    z-index: 1;
    text-align: center;
    padding: 4rem 1.5rem 2.5rem;
    max-width: var(--max-w);
    margin: 0 auto;
}

.header__badge {
    display: flex;
    gap: 0.75rem;
    justify-content: center;
    align-items: center;
    margin-bottom: 2rem;
}

.badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    padding: 0.35rem 1rem;
    border-radius: 999px;
}

.badge--live {
    background: rgba(245, 158, 11, 0.12);
    color: var(--amber);
    border: 1px solid rgba(245, 158, 11, 0.25);
}

.badge--live svg {
    stroke: var(--amber);
}

.header__title {
    font-size: clamp(2.2rem, 5vw, 3.6rem);
    font-weight: 800;
    background: linear-gradient(135deg, var(--amber), var(--solar), var(--green));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1.1;
    margin-bottom: 1.25rem;
    letter-spacing: -0.02em;
}

.header__subtitle {
    color: var(--text-muted);
    font-size: 0.95rem;
    line-height: 1.6;
    max-width: 620px;
    margin: 0 auto 0.75rem;
}

.header__countries {
    color: var(--text-dim);
    font-size: 0.85rem;
}

/* ─── KPI Strip ─── */
.kpi-strip {
    position: relative;
    z-index: 1;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 1rem;
    max-width: var(--max-w);
    margin: 0 auto 1rem;
    padding: 0 1.5rem;
}

.kpi-card {
    display: flex;
    align-items: center;
    gap: 1rem;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1.1rem 1.25rem;
    position: relative;
    overflow: hidden;
    transition: transform 0.2s, box-shadow 0.2s;
}

.kpi-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.3);
}

.kpi-card::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 3px;
}

.kpi-card--amber::before {
    background: var(--amber);
}

.kpi-card--solar::before {
    background: var(--solar);
}

.kpi-card--ev::before {
    background: var(--ev-cyan);
}

.kpi-card--green::before {
    background: var(--green);
}

.kpi-card__icon {
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.kpi-card--amber .kpi-card__icon svg {
    stroke: var(--amber);
}

.kpi-card--solar .kpi-card__icon svg {
    stroke: var(--solar);
}

.kpi-card--ev .kpi-card__icon svg {
    stroke: var(--ev-cyan);
}

.kpi-card--green .kpi-card__icon svg {
    stroke: var(--green);
}

.kpi-card__body {
    display: flex;
    flex-direction: column;
    min-width: 0;
}

.kpi-card__label {
    font-size: 0.6rem;
    font-weight: 700;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: var(--text-muted);
    margin-bottom: 0.2rem;
}

.kpi-card__value {
    font-family: 'Fira Code', monospace;
    font-size: 1.6rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    line-height: 1.1;
}

.kpi-card__change {
    font-size: 0.72rem;
    font-weight: 600;
    margin-top: 0.2rem;
    color: var(--text-muted);
}

.kpi-card__change.positive {
    color: var(--green);
}

.kpi-card__change.negative {
    color: var(--rose);
}

/* ─── Story Sections ─── */
.story-section {
    position: relative;
    z-index: 1;
    max-width: var(--max-w);
    margin: 0 auto;
    padding: 2.5rem 1.5rem 1rem;
}

.story-section__header {
    display: flex;
    align-items: flex-start;
    gap: 1.25rem;
    margin-bottom: 1.5rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--border);
}

.story-section__number {
    font-family: 'Fira Code', monospace;
    font-size: 2rem;
    font-weight: 700;
    color: var(--amber);
    opacity: 0.3;
    line-height: 1;
    flex-shrink: 0;
    min-width: 44px;
}

.story-section__title {
    font-size: 1.4rem;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 0.35rem;
}

.story-section__desc {
    font-size: 0.85rem;
    color: var(--text-muted);
    line-height: 1.5;
    max-width: 640px;
}

/* ─── Chart Grid ─── */
.chart-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.25rem;
}

.chart-grid--hero {
    grid-template-columns: 1.6fr 1fr;
}

.chart-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1.25rem 1.4rem;
    display: flex;
    flex-direction: column;
}

.chart-card--wide {
    grid-column: 1 / -1;
}

.chart-card__header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 1rem;
    margin-bottom: 1rem;
}

.chart-card__title {
    font-size: 0.95rem;
    font-weight: 700;
}

.chart-card__subtitle {
    font-size: 0.72rem;
    color: var(--text-muted);
    margin-top: 0.15rem;
}

.chart-card__tag {
    white-space: nowrap;
    font-size: 0.58rem;
    font-weight: 700;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    padding: 0.25rem 0.65rem;
    border-radius: var(--radius-sm);
    flex-shrink: 0;
}

.chart-card__tag--amber {
    background: var(--amber-glow);
    color: var(--amber);
    border: 1px solid rgba(245, 158, 11, 0.2);
}

.chart-card__tag--solar {
    background: var(--solar-glow);
    color: var(--solar);
    border: 1px solid rgba(250, 204, 21, 0.2);
}

.chart-card__tag--green {
    background: var(--green-glow);
    color: var(--green);
    border: 1px solid rgba(34, 197, 94, 0.2);
}

.chart-card__tag--blue {
    background: var(--blue-glow);
    color: var(--blue);
    border: 1px solid rgba(59, 130, 246, 0.2);
}

.chart-card__tag--rose {
    background: var(--rose-glow);
    color: var(--rose);
    border: 1px solid rgba(244, 63, 94, 0.2);
}

.chart-card__tag--ev {
    background: var(--ev-glow);
    color: var(--ev-cyan);
    border: 1px solid rgba(6, 182, 212, 0.2);
}

.chart-card__tag--violet {
    background: var(--violet-glow);
    color: var(--violet);
    border: 1px solid rgba(139, 92, 246, 0.2);
}

.chart-card__canvas-wrap {
    flex: 1;
    min-height: 280px;
    position: relative;
}

.chart-card__canvas-wrap canvas {
    width: 100% !important;
    height: 100% !important;
}

/* ─── Scroll Reveal Animations ─── */
.reveal {
    opacity: 0;
    transform: translateY(28px);
    transition: opacity 0.7s cubic-bezier(0.4, 0, 0.2, 1),
        transform 0.7s cubic-bezier(0.4, 0, 0.2, 1);
}

.reveal.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Stagger children */
.kpi-strip .reveal:nth-child(2) {
    transition-delay: 0.08s;
}

.kpi-strip .reveal:nth-child(3) {
    transition-delay: 0.16s;
}

.kpi-strip .reveal:nth-child(4) {
    transition-delay: 0.24s;
}

.chart-grid .reveal:nth-child(2) {
    transition-delay: 0.1s;
}

.chart-grid .reveal:nth-child(3) {
    transition-delay: 0.2s;
}

/* ─── Business Recommendation Cards ─── */
.biz-reco-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1rem;
    margin-top: 1.5rem;
}

.biz-reco-loading {
    color: var(--text-muted);
    font-size: 0.82rem;
    font-style: italic;
}

.biz-reco-card {
    background: var(--bg-surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1.1rem 1.25rem;
    position: relative;
    overflow: hidden;
}

.biz-reco-card::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 3px;
}

.biz-reco-card--now::before {
    background: var(--green);
}

.biz-reco-card--soon::before {
    background: var(--solar);
}

.biz-reco-card--later::before {
    background: var(--text-muted);
}

.biz-reco-card__head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 0.5rem;
}

.biz-reco-card__country {
    font-size: 1rem;
    font-weight: 700;
}

.biz-reco-card__badge {
    font-family: 'Fira Code', monospace;
    font-size: 0.6rem;
    font-weight: 700;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    padding: 0.2rem 0.6rem;
    border-radius: 999px;
}

.biz-reco-card--now .biz-reco-card__badge {
    background: var(--green-glow);
    color: var(--green);
    border: 1px solid rgba(34, 197, 94, 0.25);
}

.biz-reco-card--soon .biz-reco-card__badge {
    background: var(--solar-glow);
    color: var(--solar);
    border: 1px solid rgba(250, 204, 21, 0.25);
}

.biz-reco-card--later .biz-reco-card__badge {
    background: rgba(100, 116, 139, 0.12);
    color: var(--text-muted);
    border: 1px solid rgba(100, 116, 139, 0.2);
}

.biz-reco-card__metrics {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.4rem;
    margin-bottom: 0.6rem;
}

.biz-reco-card__metric {
    display: flex;
    flex-direction: column;
}

.biz-reco-card__metric-label {
    font-size: 0.58rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    color: var(--text-dim);
}

.biz-reco-card__metric-value {
    font-family: 'Fira Code', monospace;
    font-size: 0.85rem;
    font-weight: 600;
}

.biz-reco-card__rationale {
    font-size: 0.75rem;
    color: var(--text-muted);
    line-height: 1.45;
    border-top: 1px solid var(--border);
    padding-top: 0.5rem;
}

/* ─── Insights ─── */
.insights-section {
    position: relative;
    z-index: 1;
    max-width: var(--max-w);
    margin: 2rem auto 3rem;
    padding: 0 1.5rem;
}

.insights-section__title {
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: 1.25rem;
    display: flex;
    align-items: center;
}

.insights-section__title svg {
    stroke: var(--amber);
}

.insights-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1rem;
}

.insight-item {
    background: var(--bg-surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1.1rem 1.25rem;
}

.insight-item h3 {
    font-size: 0.85rem;
    font-weight: 700;
    margin-bottom: 0.4rem;
}

.insight-item p {
    font-size: 0.78rem;
    color: var(--text-muted);
    line-height: 1.55;
}

.insight-item--positive {
    border-left: 3px solid var(--green);
}

.insight-item--negative {
    border-left: 3px solid var(--rose);
}

.insight-item--highlight {
    border-left: 3px solid var(--amber);
}

.insight-item--neutral {
    border-left: 3px solid var(--blue);
}

/* ─── Footer ─── */
.footer {
    position: relative;
    z-index: 1;
    text-align: center;
    padding: 2rem 1.5rem 3rem;
    color: var(--text-dim);
    font-size: 0.75rem;
    border-top: 1px solid var(--border);
}

/* ─── Responsive ─── */
@media (max-width: 900px) {

    .chart-grid,
    .chart-grid--hero {
        grid-template-columns: 1fr;
    }

    .chart-card--wide {
        grid-column: 1;
    }

    .sticky-nav__logo {
        display: none;
    }

    .sticky-nav__links {
        flex: 1;
        justify-content: center;
    }
}

@media (max-width: 600px) {
    .kpi-strip {
        grid-template-columns: 1fr 1fr;
    }

    .header__title {
        font-size: 1.6rem;
    }

    .chart-card__canvas-wrap {
        min-height: 220px;
    }

    .story-section__header {
        flex-direction: column;
        gap: 0.5rem;
    }

    .story-section__number {
        font-size: 1.4rem;
    }

    .sticky-nav__link {
        font-size: 0.65rem;
        padding: 0.35rem 0.6rem;
    }
}

/* ─── Reduced Motion ─── */
@media (prefers-reduced-motion: reduce) {
    .reveal {
        opacity: 1;
        transform: none;
        transition: none;
    }

    .pulse-dot {
        animation: none;
    }

    html {
        scroll-behavior: auto;
    }
}