/* ============================================
   portfolio.report — Styles
   Chrome-metallic fintech terminal aesthetic
   ============================================ */

/* --- Custom Properties --- */
:root {
    /* Colors from DESIGN.md */
    --vault-white: #F7F7F8;
    --platinum: #EBEBED;
    --obsidian: #1A1A1A;
    --graphite: #3D3D3D;
    --steel: #6B7280;
    --chrome-silver: #C0C0C0;
    --verdigris: #2E8B57;
    --cinnabar: #E34234;
    --titanium-gray: #8A8D91;
    --pale-gold: #D4AF37;

    /* Spacing (8px baseline grid) */
    --space-1: 8px;
    --space-2: 16px;
    --space-3: 24px;
    --space-4: 32px;
    --space-6: 48px;
    --space-8: 64px;

    /* Animation scale */
    --anim-scale: 1;
}

@media (max-width: 768px) {
    :root {
        --anim-scale: 0.6;
    }
}

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

html {
    font-size: 16px;
    scroll-behavior: smooth;
    scroll-snap-type: y mandatory;
    overflow-x: hidden;
}

body {
    font-family: 'Inter', sans-serif;
    font-weight: 400;
    line-height: 1.6;
    color: var(--graphite);
    background-color: var(--vault-white);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* --- Grid Substrate --- */
#grid-substrate {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 0;
    opacity: 0;
    transition: opacity calc(600ms * var(--anim-scale)) ease;
}

#grid-substrate.visible {
    opacity: 0.15;
}

@media (max-width: 768px) {
    #grid-substrate {
        display: none;
    }
}

/* --- Scroll Indicator --- */
#scroll-indicator {
    position: fixed;
    right: 20px;
    top: 50%;
    transform: translateY(-50%);
    width: 2px;
    height: 200px;
    z-index: 100;
    opacity: 0;
    transition: opacity calc(400ms * var(--anim-scale)) ease;
}

#scroll-indicator.visible {
    opacity: 1;
}

#scroll-rule {
    position: absolute;
    top: 0;
    left: 0;
    width: 2px;
    height: 100%;
}

#scroll-rule line {
    stroke-dasharray: 200;
    stroke-dashoffset: 200;
    transition: stroke-dashoffset calc(400ms * var(--anim-scale)) ease;
}

#scroll-indicator.visible #scroll-rule line {
    stroke-dashoffset: 0;
}

#scroll-ticks {
    position: absolute;
    top: 0;
    left: -3px;
    width: 8px;
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.tick {
    display: block;
    width: 8px;
    height: 1px;
    background: var(--titanium-gray);
}

#scroll-dot {
    position: absolute;
    left: -4px;
    top: 0;
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--chrome-silver);
    transition: top 0.15s ease-out, background-color 0.2s ease;
    will-change: top;
}

#scroll-dot.active {
    background: var(--pale-gold);
}

@media (max-width: 768px) {
    #scroll-indicator {
        display: none;
    }
}

/* --- Folio Sections --- */
.folio {
    min-height: 100vh;
    scroll-snap-align: start;
    padding: var(--space-8);
    position: relative;
    z-index: 1;
    display: flex;
    align-items: center;
    justify-content: center;
}

.folio:nth-child(even) {
    background-color: var(--platinum);
}

.folio:nth-child(odd) {
    background-color: var(--vault-white);
}

.folio-inner {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
}

/* --- Folio Headings --- */
.folio-heading {
    font-family: 'Inter', sans-serif;
    font-weight: 700;
    font-size: clamp(2rem, 4vw, 3.2rem);
    letter-spacing: -0.02em;
    color: var(--obsidian);
    margin-bottom: var(--space-6);
}

.folio-heading-wrap {
    display: flex;
    align-items: baseline;
    gap: 2px;
    margin-bottom: var(--space-6);
}

.folio-heading-wrap .folio-heading {
    margin-bottom: 0;
}

.cursor {
    font-family: 'IBM Plex Mono', monospace;
    font-weight: 500;
    font-size: clamp(2rem, 4vw, 3.2rem);
    color: var(--obsidian);
    opacity: 0;
    animation: blink calc(500ms * var(--anim-scale)) step-end 4 forwards;
}

@keyframes blink {
    0%, 100% { opacity: 1; }
    50% { opacity: 0; }
}

/* --- Labels --- */
.label {
    font-family: 'Space Grotesk', sans-serif;
    font-weight: 500;
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    color: var(--steel);
    display: block;
}

/* --- Numerical Values --- */
.metric,
.value-large,
.data-value {
    font-family: 'IBM Plex Mono', monospace;
    font-weight: 500;
    color: var(--obsidian);
}

.value-large {
    font-size: 32px;
    display: block;
    letter-spacing: 0.01em;
    margin: var(--space-1) 0;
}

.metric {
    font-size: 20px;
    display: block;
    letter-spacing: 0.01em;
    margin: var(--space-1) 0;
}

.data-value {
    font-size: 14px;
    letter-spacing: 0.01em;
}

.negative {
    color: var(--cinnabar);
}

.positive {
    color: var(--verdigris);
}

.neutral {
    color: var(--steel);
}

/* --- Value Change --- */
.value-change {
    font-family: 'IBM Plex Mono', monospace;
    font-weight: 500;
    font-size: 14px;
    display: flex;
    align-items: center;
    gap: var(--space-1);
}

.value-change.positive {
    color: var(--verdigris);
}

.value-change.negative {
    color: var(--cinnabar);
}

.value-change.neutral {
    color: var(--steel);
}

/* --- Data Pairs --- */
.data-pair {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    padding: 4px 0;
    border-bottom: 1px solid var(--platinum);
}

.data-pair .data-label {
    font-family: 'Space Grotesk', sans-serif;
    font-weight: 500;
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    color: var(--steel);
}

/* --- Modular Blocks --- */
.modular-block {
    border: 1px solid var(--chrome-silver);
    border-radius: 2px;
    padding: var(--space-3);
    background: var(--vault-white);
    transition: border-color calc(200ms * var(--anim-scale)) ease,
                background-color calc(200ms * var(--anim-scale)) ease;
}

.modular-block:hover {
    border-color: var(--pale-gold);
    background-color: var(--platinum);
}

/* Skeleton loading reveal */
.modular-block[data-reveal] {
    position: relative;
    overflow: hidden;
}

.modular-block[data-reveal]::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--platinum);
    z-index: 2;
    opacity: 1;
    transition: opacity calc(300ms * var(--anim-scale)) ease;
}

.modular-block[data-reveal]::after {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.6), transparent);
    z-index: 3;
    opacity: 0;
}

.modular-block[data-reveal].shimmer::after {
    opacity: 1;
    animation: shimmer calc(400ms * var(--anim-scale)) ease forwards;
}

.modular-block[data-reveal].revealed::before {
    opacity: 0;
}

.modular-block[data-reveal].revealed::after {
    opacity: 0;
}

@keyframes shimmer {
    0% { left: -100%; }
    100% { left: 100%; }
}

/* --- Folio I: Overview --- */
#folio-overview .folio-inner {
    display: grid;
    grid-template-columns: 5fr 3fr;
    gap: var(--space-3);
    align-items: center;
}

.folio-left {
    display: flex;
    align-items: center;
    justify-content: center;
}

#allocation-chart-container {
    width: 100%;
    max-width: 400px;
}

#allocation-chart {
    width: 100%;
    height: auto;
}

#allocation-chart .segment {
    cursor: pointer;
    transition: fill calc(200ms * var(--anim-scale)) ease;
}

#allocation-chart .segment:hover {
    fill: var(--pale-gold);
}

#allocation-chart .leader-line {
    stroke: var(--steel);
    stroke-width: 0.5;
    fill: none;
}

#allocation-chart .chart-label {
    font-family: 'Space Grotesk', sans-serif;
    font-weight: 500;
    font-size: 9px;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    fill: var(--steel);
}

.overview-summary {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
    opacity: 0;
    transition: opacity calc(400ms * var(--anim-scale)) ease;
}

.overview-summary.visible {
    opacity: 1;
}

.summary-block {
    padding: var(--space-2) 0;
    border-bottom: 1px solid var(--chrome-silver);
}

.summary-block:last-child {
    border-bottom: none;
}

@media (max-width: 768px) {
    #folio-overview .folio-inner {
        grid-template-columns: 1fr;
        gap: var(--space-4);
    }

    #allocation-chart-container {
        max-width: 280px;
        margin: 0 auto;
    }
}

/* --- Folio II: Timeline --- */
#timeline-container {
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
}

.timeline-row {
    display: flex;
    gap: var(--space-3);
    position: relative;
    align-items: stretch;
}

.timeline-row.ltr {
    flex-direction: row;
}

.timeline-row.rtl {
    flex-direction: row-reverse;
}

.timeline-point {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: var(--space-1);
    min-width: 0;
}

.timeline-connector {
    display: none;
}

.timeline-point .metric {
    font-size: 24px;
}

@media (max-width: 768px) {
    .timeline-row.ltr,
    .timeline-row.rtl {
        flex-direction: column;
    }
}

/* --- Folio III: Holdings --- */
#holdings-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-3);
}

.holding-block {
    display: flex;
    flex-direction: column;
    gap: var(--space-1);
}

/* Mini bar charts */
.mini-bar-chart {
    display: flex;
    align-items: flex-end;
    gap: 4px;
    height: 48px;
    padding: var(--space-1) 0;
}

.mini-bar-chart .bar {
    flex: 1;
    height: var(--bar-height);
    background: var(--titanium-gray);
    border-radius: 1px 1px 0 0;
    transition: background calc(200ms * var(--anim-scale)) ease;
}

.holding-block:hover .mini-bar-chart .bar {
    background: var(--steel);
}

/* Gradient mesh block */
.gradient-mesh-block {
    background: linear-gradient(135deg, var(--verdigris) 0%, var(--titanium-gray) 50%, var(--cinnabar) 100%);
    color: white;
}

.gradient-mesh-block .label,
.gradient-mesh-block .data-label {
    color: rgba(255, 255, 255, 0.7);
}

.gradient-mesh-block .metric,
.gradient-mesh-block .data-value {
    color: #FFFFFF;
}

.gradient-mesh-block .value-change {
    color: rgba(255, 255, 255, 0.9);
}

.gradient-mesh-block .data-pair {
    border-bottom-color: rgba(255, 255, 255, 0.2);
}

.gradient-mesh-block:hover {
    border-color: var(--pale-gold);
    background: linear-gradient(135deg, var(--verdigris) 0%, var(--titanium-gray) 50%, var(--cinnabar) 100%);
}

@media (max-width: 768px) {
    #holdings-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* --- Folio IV: Projection --- */
#projection-chart-container {
    width: 100%;
    margin-bottom: var(--space-4);
}

#projection-chart {
    width: 100%;
    height: auto;
    overflow: visible;
}

.confidence-band.ci-95 {
    fill: var(--titanium-gray);
    opacity: 0.04;
}

.confidence-band.ci-68 {
    fill: var(--titanium-gray);
    opacity: 0.08;
}

.chart-line {
    fill: none;
    stroke-width: 2;
    stroke-linecap: round;
    stroke-linejoin: round;
}

.chart-line.historical {
    stroke: var(--obsidian);
}

.chart-line.projection {
    stroke: var(--obsidian);
    stroke-dasharray: 6 4;
}

#chart-axis-labels text {
    font-family: 'Space Grotesk', sans-serif;
    font-weight: 500;
    font-size: 10px;
    fill: var(--steel);
    text-transform: uppercase;
    letter-spacing: 0.12em;
}

#projection-stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-3);
}

.stat-block {
    text-align: center;
}

.stat-block .metric {
    font-size: 24px;
    margin: var(--space-1) 0;
}

@media (max-width: 768px) {
    #projection-stats {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* --- Sparklines --- */
.sparkline-inline {
    display: inline-block;
    width: 80px;
    height: 24px;
    vertical-align: middle;
    position: relative;
    transition: width calc(200ms * var(--anim-scale)) ease-out;
}

.sparkline-inline svg {
    width: 100%;
    height: 100%;
}

.sparkline-inline polyline {
    fill: none;
    stroke: var(--titanium-gray);
    stroke-width: 1.5;
    stroke-linecap: round;
    stroke-linejoin: round;
}

.sparkline-inline .endpoint {
    r: 3;
    transition: fill 0.2s ease;
}

.sparkline-inline .endpoint.up {
    fill: var(--verdigris);
}

.sparkline-inline .endpoint.down {
    fill: var(--cinnabar);
}

/* Sparkline hover tooltip */
.sparkline-tooltip {
    position: absolute;
    top: -24px;
    padding: 2px 6px;
    font-family: 'IBM Plex Mono', monospace;
    font-size: 12px;
    font-weight: 500;
    color: var(--obsidian);
    background: var(--vault-white);
    border: 1px solid var(--chrome-silver);
    border-radius: 2px;
    pointer-events: none;
    white-space: nowrap;
    z-index: 10;
    opacity: 0;
    transition: opacity 0.1s ease;
}

.sparkline-inline:hover .sparkline-tooltip {
    opacity: 1;
}

.sparkline-hover-rule {
    position: absolute;
    top: 0;
    width: 1px;
    height: 100%;
    background: var(--pale-gold);
    pointer-events: none;
    opacity: 0;
    transition: opacity 0.1s ease;
}

.sparkline-inline:hover .sparkline-hover-rule {
    opacity: 1;
}

@media (min-width: 769px) {
    .sparkline-inline:hover {
        width: 200px;
    }
}

/* --- General Responsive --- */
@media (max-width: 768px) {
    .folio {
        padding: var(--space-4);
    }
}