:root {
    --brand-orange: #ED6C02;
    --brand-amber: #F59E0B;
    --text-ink: #18181B;
    --text-muted: #71717A;
    --bg-paper: #FAFAF9;
    --bg-stone: #F5F5F4;
    --border-hairline: #D4D4D8;
    --blueprint-line: rgba(237, 108, 2, 0.08);
}

body {
    font-family: 'Satoshi', sans-serif;
    background-color: var(--bg-paper);
    color: var(--text-ink);
    overflow-x: hidden;
}

.heading-font {
    font-family: 'Clash Display', sans-serif;
    font-weight: 600;
}

/* ═══ Blueprint Background ═══ */
.blueprint-bg {
    background-image:
        repeating-linear-gradient(0deg, var(--blueprint-line) 0px, var(--blueprint-line) 1px, transparent 1px, transparent 80px),
        repeating-linear-gradient(90deg, var(--blueprint-line) 0px, var(--blueprint-line) 1px, transparent 1px, transparent 80px);
    position: relative;
}

.blueprint-bg::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse at 30% 20%, rgba(237, 108, 2, 0.04) 0%, transparent 60%);
    pointer-events: none;
}

/* ═══ Technical Measurement Labels ═══ */
.tech-label {
    font-family: 'Clash Display', sans-serif;
    font-size: 0.65rem;
    font-weight: 500;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--text-muted);
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.tech-label::before {
    content: '';
    width: 24px;
    height: 1px;
    background: var(--brand-orange);
}

/* ═══ Spec Card ═══ */
.spec-card {
    background: white;
    border: 1px solid var(--border-hairline);
    position: relative;
    transition: all 0.5s cubic-bezier(0.25, 1, 0.5, 1);
    overflow: hidden;
}

.spec-card::before {
    content: attr(data-spec);
    position: absolute;
    top: 1rem; right: 1.5rem;
    font-family: 'Clash Display', sans-serif;
    font-size: 4rem;
    font-weight: 700;
    color: rgba(237, 108, 2, 0.06);
    line-height: 1;
}

.spec-card::after {
    content: '';
    position: absolute;
    left: 0; top: 0;
    width: 4px; height: 0;
    background: var(--brand-orange);
    transition: height 0.5s cubic-bezier(0.25, 1, 0.5, 1);
}

.spec-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 20px 50px -15px rgba(0, 0, 0, 0.08);
    border-color: rgba(237, 108, 2, 0.2);
}

.spec-card:hover::after {
    height: 100%;
}

/* ═══ Data Table Rows ═══ */
.data-row {
    display: grid;
    grid-template-columns: 1fr 2fr 1fr;
    gap: 2rem;
    padding: 2rem 0;
    border-bottom: 1px solid var(--border-hairline);
    align-items: start;
    transition: all 0.3s ease;
}

.data-row:hover {
    background: rgba(237, 108, 2, 0.02);
    padding-left: 1rem;
    padding-right: 1rem;
}

/* ═══ Cross-hair Cursor Target ═══ */
.crosshair-marker {
    width: 20px; height: 20px;
    position: relative;
}

.crosshair-marker::before,
.crosshair-marker::after {
    content: '';
    position: absolute;
    background: var(--brand-orange);
}

.crosshair-marker::before {
    width: 1px; height: 100%;
    left: 50%; top: 0;
}

.crosshair-marker::after {
    width: 100%; height: 1px;
    left: 0; top: 50%;
}

/* ═══ Dimension Lines ═══ */
.dimension-line {
    position: relative;
    padding-left: 3rem;
}

.dimension-line::before {
    content: '';
    position: absolute;
    left: 0; top: 0;
    width: 1px;
    height: 100%;
    background: linear-gradient(to bottom, var(--brand-orange), transparent);
}

.dimension-line::after {
    content: '';
    position: absolute;
    left: -3px; top: 0;
    width: 7px; height: 7px;
    background: var(--brand-orange);
    border-radius: 50%;
}

/* ═══ Stats Ring ═══ */
.stat-ring {
    width: 120px; height: 120px;
    border-radius: 50%;
    border: 3px solid var(--border-hairline);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    transition: all 0.4s ease;
}

.stat-ring::before {
    content: '';
    position: absolute;
    inset: -3px;
    border-radius: 50%;
    border: 3px solid transparent;
    border-top-color: var(--brand-orange);
    animation: spinRing 3s linear infinite;
}

@keyframes spinRing {
    to { transform: rotate(360deg); }
}

/* ═══ Entrance Animations ═══ */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    animation: revealUp 0.9s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.reveal-scale {
    opacity: 0;
    transform: scale(0.95);
    animation: revealScale 0.9s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

@keyframes revealUp {
    to { opacity: 1; transform: translateY(0); }
}

@keyframes revealScale {
    to { opacity: 1; transform: scale(1); }
}

.d1 { animation-delay: 0.1s; }
.d2 { animation-delay: 0.2s; }
.d3 { animation-delay: 0.3s; }
.d4 { animation-delay: 0.4s; }
.d5 { animation-delay: 0.5s; }
.d6 { animation-delay: 0.6s; }

/* ═══ Buttons ═══ */
.btn-brand {
    background: var(--brand-orange);
    color: white;
    font-weight: 600;
    position: relative;
    overflow: hidden;
    transition: all 0.35s ease;
}

.btn-brand:hover {
    box-shadow: 0 10px 30px -5px rgba(237, 108, 2, 0.35);
    transform: translateY(-2px);
}

.btn-ghost {
    border: 1.5px solid var(--text-ink);
    color: var(--text-ink);
    font-weight: 600;
    background: transparent;
    transition: all 0.3s ease;
}

.btn-ghost:hover {
    background: var(--text-ink);
    color: white;
}

/* ═══ Footer ═══ */
.footer-dark {
    background: var(--text-ink);
    color: #A1A1AA;
}

/* ═══ Misc ═══ */
::selection {
    background: var(--brand-orange);
    color: white;
}

.text-gradient {
    background: linear-gradient(135deg, var(--brand-orange) 0%, var(--brand-amber) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

/* Subtle line drawing animation */
@keyframes drawLine {
    from { stroke-dashoffset: 1000; }
    to { stroke-dashoffset: 0; }
}

.line-draw {
    stroke-dasharray: 1000;
    stroke-dashoffset: 1000;
    animation: drawLine 2s cubic-bezier(0.22, 1, 0.36, 1) forwards;
}