/* completengine.net - Isometric Technical Blueprint */

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

:root {
    --paper-white: #F7F8FC;
    --card-white: #FFFFFF;
    --blueprint: #4361EE;
    --blueprint-dark: #3451D1;
    --dark-slate: #1E293B;
    --medium-slate: #64748B;
    --light-slate: #94A3B8;
    --grid-dot: #D0D5E3;
    --success: #22C55E;
}

body {
    background-color: var(--paper-white);
    color: var(--dark-slate);
    font-family: 'Space Grotesk', sans-serif;
    font-weight: 400;
    font-size: clamp(0.9rem, 1.1vw, 1rem);
    line-height: 1.75;
    overflow-x: hidden;
}

/* ============================
   DOT GRID BACKGROUND
   ============================ */

.dot-grid {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: radial-gradient(circle, var(--grid-dot) 1px, transparent 1px);
    background-size: 20px 20px;
    opacity: 0;
    z-index: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
}

.dot-grid.visible {
    opacity: 0.6;
}

/* ============================
   HERO: COVER PLATE
   ============================ */

#hero {
    position: relative;
    z-index: 1;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 16px;
}

#hero-title {
    font-family: 'Space Grotesk', sans-serif;
    font-weight: 700;
    font-size: clamp(2rem, 4vw, 3rem);
    letter-spacing: 0.01em;
    color: var(--dark-slate);
    opacity: 0;
    transition: opacity 0.2s ease;
}

#hero-title.visible {
    opacity: 1;
}

#hero-subtitle {
    font-family: 'Space Grotesk', sans-serif;
    font-weight: 400;
    font-size: clamp(1rem, 1.5vw, 1.2rem);
    color: var(--medium-slate);
    opacity: 0;
    transition: opacity 0.2s ease;
}

#hero-subtitle.visible {
    opacity: 1;
}

#hero-version {
    font-family: 'IBM Plex Mono', monospace;
    font-size: 0.8rem;
    color: var(--light-slate);
    opacity: 0;
    transition: opacity 0.2s ease;
}

#hero-version.visible {
    opacity: 1;
}

/* Isometric Cube */

#iso-cube {
    width: 120px;
    height: 120px;
    position: relative;
    margin-bottom: 24px;
    transition: transform 0.3s ease;
}

#iso-cube:hover {
    transform: rotateX(5deg) rotateY(5deg);
}

.cube-top {
    position: absolute;
    width: 80px;
    height: 46px;
    background-color: rgba(67, 97, 238, 0.6);
    transform: rotate(-30deg) skewX(-30deg) translateX(50px) translateY(-10px);
    opacity: 0;
    transition: opacity 0.5s cubic-bezier(0.16, 1, 0.3, 1);
}

.cube-top.visible {
    opacity: 1;
}

.cube-left {
    position: absolute;
    width: 80px;
    height: 80px;
    background-color: rgba(67, 97, 238, 0.4);
    transform: rotate(-30deg) skewX(30deg) translateX(-8px) translateY(36px);
    opacity: 0;
    transition: opacity 0.5s cubic-bezier(0.16, 1, 0.3, 1);
}

.cube-left.visible {
    opacity: 1;
}

.cube-right {
    position: absolute;
    width: 80px;
    height: 80px;
    background-color: rgba(67, 97, 238, 0.8);
    transform: rotate(30deg) skewX(-30deg) translateX(8px) translateY(36px);
    opacity: 0;
    transition: opacity 0.5s cubic-bezier(0.16, 1, 0.3, 1);
}

.cube-right.visible {
    opacity: 1;
}

/* ============================
   SECTION TITLES
   ============================ */

.section-title {
    font-family: 'Space Grotesk', sans-serif;
    font-weight: 700;
    font-size: clamp(1.5rem, 3vw, 2.5rem);
    letter-spacing: 0.01em;
    color: var(--dark-slate);
    text-align: center;
    margin-bottom: 48px;
}

/* ============================
   COMPONENT DIAGRAM
   ============================ */

#component-diagram {
    position: relative;
    z-index: 1;
    max-width: 800px;
    margin: 0 auto;
    padding: 80px 20px;
    opacity: 0;
    transform: translateY(8px);
    transition: opacity 0.3s ease, transform 0.3s ease;
}

#component-diagram.visible {
    opacity: 1;
    transform: translateY(0);
}

.layer-stack {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0;
}

.iso-layer {
    display: flex;
    align-items: center;
    gap: 20px;
    opacity: 0;
    transform: translateY(12px);
    transition: opacity 0.3s ease, transform 0.3s ease;
}

.iso-layer.visible {
    opacity: 1;
    transform: translateY(0);
}

.layer-num {
    font-family: 'IBM Plex Mono', monospace;
    font-size: 0.75rem;
    font-weight: 400;
    color: var(--card-white);
    background-color: var(--blueprint);
    width: 28px;
    height: 28px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.layer-plane {
    width: 200px;
    height: 60px;
    transform: skewX(-30deg);
    transition: opacity 0.3s ease, border-color 0.3s ease;
}

.layer-5 { background-color: rgba(67, 97, 238, 0.2); border: 1.5px solid rgba(67, 97, 238, 0.3); }
.layer-4 { background-color: rgba(67, 97, 238, 0.3); border: 1.5px solid rgba(67, 97, 238, 0.4); }
.layer-3 { background-color: rgba(67, 97, 238, 0.4); border: 1.5px solid rgba(67, 97, 238, 0.5); }
.layer-2 { background-color: rgba(67, 97, 238, 0.5); border: 1.5px solid rgba(67, 97, 238, 0.6); }
.layer-1 { background-color: rgba(67, 97, 238, 0.6); border: 1.5px solid rgba(67, 97, 238, 0.7); }

.iso-layer:hover .layer-plane {
    opacity: 0.9;
    border-color: var(--blueprint);
}

.layer-label {
    font-family: 'IBM Plex Mono', monospace;
    font-size: 0.75rem;
    letter-spacing: 0.02em;
    color: var(--medium-slate);
    min-width: 120px;
}

.layer-connector {
    width: 2px;
    height: 20px;
    border-left: 2px dashed rgba(67, 97, 238, 0.3);
    margin-left: 110px;
}

/* ============================
   DATA FLOW
   ============================ */

#data-flow {
    position: relative;
    z-index: 1;
    max-width: 900px;
    margin: 0 auto;
    padding: 80px 20px;
    opacity: 0;
    transform: translateY(8px);
    transition: opacity 0.3s ease, transform 0.3s ease;
}

#data-flow.visible {
    opacity: 1;
    transform: translateY(0);
}

.flow-diagram {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0;
    flex-wrap: wrap;
}

.flow-box {
    background-color: var(--card-white);
    border: 1.5px solid var(--blueprint);
    border-radius: 6px;
    padding: 12px 24px;
    font-family: 'Space Grotesk', sans-serif;
    font-weight: 500;
    font-size: clamp(0.85rem, 1vw, 0.95rem);
    color: var(--dark-slate);
}

.flow-arrow {
    width: 0;
    height: 2px;
    background-color: var(--blueprint);
    position: relative;
    transition: width 0.3s ease;
    margin: 0 4px;
}

.flow-arrow.visible {
    width: 40px;
}

.flow-arrow::after {
    content: '';
    position: absolute;
    right: -1px;
    top: -4px;
    width: 0;
    height: 0;
    border-left: 6px solid var(--blueprint);
    border-top: 5px solid transparent;
    border-bottom: 5px solid transparent;
}

/* ============================
   SPECIFICATION TABLE
   ============================ */

#spec-table {
    position: relative;
    z-index: 1;
    max-width: 900px;
    margin: 0 auto;
    padding: 80px 20px;
    opacity: 0;
    transform: translateY(8px);
    transition: opacity 0.3s ease, transform 0.3s ease;
}

#spec-table.visible {
    opacity: 1;
    transform: translateY(0);
}

table.spec {
    width: 100%;
    border-collapse: collapse;
    font-family: 'Space Grotesk', sans-serif;
}

table.spec thead tr {
    border-bottom: 2px solid var(--dark-slate);
}

table.spec th {
    text-align: left;
    padding: 12px 16px;
    font-weight: 700;
    font-size: clamp(0.85rem, 1vw, 0.95rem);
    color: var(--dark-slate);
}

table.spec td {
    padding: 12px 16px;
    font-size: clamp(0.85rem, 1vw, 0.95rem);
    color: var(--medium-slate);
    border-bottom: 1px solid var(--grid-dot);
}

table.spec tbody tr {
    opacity: 0;
    transform: translateY(4px);
    transition: opacity 0.2s ease, transform 0.2s ease;
}

table.spec tbody tr.visible {
    opacity: 1;
    transform: translateY(0);
}

table.spec tbody tr:nth-child(odd) {
    background-color: var(--paper-white);
}

table.spec tbody tr:nth-child(even) {
    background-color: var(--card-white);
}

/* ============================
   VERSION FOOTER
   ============================ */

#version-footer {
    position: relative;
    z-index: 1;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 16px;
    max-width: 900px;
    margin: 0 auto;
    padding: 32px 20px;
    border-top: 1px solid var(--grid-dot);
    font-family: 'IBM Plex Mono', monospace;
    font-size: 0.75rem;
    color: var(--medium-slate);
}

/* ============================
   RESPONSIVE
   ============================ */

@media (max-width: 768px) {
    .flow-diagram {
        flex-direction: column;
    }

    .flow-arrow {
        width: 2px !important;
        height: 0;
        margin: 4px 0;
    }

    .flow-arrow.visible {
        width: 2px !important;
        height: 24px;
    }

    .flow-arrow::after {
        right: auto;
        top: auto;
        bottom: -1px;
        left: -4px;
        border-left: 5px solid transparent;
        border-right: 5px solid transparent;
        border-top: 6px solid var(--blueprint);
        border-bottom: none;
    }

    .iso-layer {
        flex-direction: column;
        text-align: center;
    }

    .layer-connector {
        margin-left: 0;
    }

    #version-footer {
        flex-direction: column;
        text-align: center;
    }
}