/* tanso.tech - Isometric technical blueprint */
/* Palette: #0A1628 #1A3A5C #1E2D3D #1E3A5F #2C3E50 #4FC3F7 #66BB6A #7BA7CC #C8D8E8 #E0E0E0 #F0F4F8 #FF7043 #FFFFFF */

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

html {
    overflow-x: hidden;
}

body {
    font-family: 'Inter', sans-serif;
    background-color: #F0F4F8;
    color: #1E2D3D;
    overflow-x: hidden;
    line-height: 1.6;
    display: flex;
}

/* === Sidebar === */
#sidebar {
    position: fixed;
    top: 0;
    left: 0;
    width: 220px;
    height: 100vh;
    background: #0A1628;
    display: flex;
    flex-direction: column;
    padding: 1.5rem;
    z-index: 100;
    border-right: 1px solid #1A3A5C;
}

.sidebar-logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 2rem;
}

.sidebar-title {
    font-family: 'Space Grotesk', sans-serif;
    font-weight: 700;
    font-size: 1rem;
    color: #FFFFFF;
    letter-spacing: -0.01em;
}

.sidebar-nav {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
    flex: 1;
}

.nav-item {
    font-family: 'IBM Plex Sans', sans-serif;
    font-weight: 400;
    font-size: 0.85rem;
    color: #7BA7CC;
    text-decoration: none;
    padding: 0.5rem 0.75rem;
    border-left: 2px solid transparent;
    transition: color 0.2s ease, border-color 0.2s ease;
}

.nav-item:hover,
.nav-item.active {
    color: #FFFFFF;
    border-left-color: #4FC3F7;
}

.sidebar-version {
    margin-top: auto;
}

.version-label {
    font-family: 'IBM Plex Mono', monospace;
    font-size: 0.7rem;
    color: #1E3A5F;
    letter-spacing: 0.1em;
}

/* === Main Content === */
#main-content {
    margin-left: 220px;
    flex: 1;
    min-height: 100vh;
    position: relative;
}

/* Blueprint grid background */
.blueprint-grid {
    position: fixed;
    top: 0;
    left: 220px;
    right: 0;
    bottom: 0;
    pointer-events: none;
    z-index: 0;
    background:
        repeating-linear-gradient(0deg, #C8D8E8 0px, #C8D8E8 1px, transparent 1px, transparent 40px),
        repeating-linear-gradient(90deg, #C8D8E8 0px, #C8D8E8 1px, transparent 1px, transparent 40px);
    opacity: 0.25;
}

.content-section {
    position: relative;
    z-index: 1;
    padding: 3rem 3rem;
    max-width: 900px;
}

/* === Typography === */
.hero-title {
    font-family: 'Space Grotesk', sans-serif;
    font-weight: 700;
    font-size: clamp(2.5rem, 5vw, 4rem);
    color: #0A1628;
    letter-spacing: -0.01em;
    margin-bottom: 1rem;
}

.hero-subtitle {
    font-family: 'IBM Plex Sans', sans-serif;
    font-weight: 300;
    font-size: 1.1rem;
    color: #1A3A5C;
    line-height: 1.7;
    max-width: 600px;
}

.section-heading {
    font-family: 'Space Grotesk', sans-serif;
    font-weight: 600;
    font-size: clamp(1.3rem, 2vw, 1.8rem);
    color: #1A3A5C;
    margin-bottom: 2rem;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid #C8D8E8;
}

/* === Hero Diagram === */
.hero-diagram {
    margin-top: 2rem;
}

.iso-svg {
    width: 100%;
    max-width: 500px;
}

.iso-path {
    stroke-dasharray: 500;
    stroke-dashoffset: 500;
    animation: draw-path 3s ease forwards;
}

@keyframes draw-path {
    to { stroke-dashoffset: 0; }
}

/* === Tech Cards === */
.tech-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
}

.tech-card {
    background: #FFFFFF;
    border: 1px solid #C8D8E8;
    padding: 1.5rem;
    position: relative;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.5s ease, transform 0.5s ease;
}

.tech-card.in-view {
    opacity: 1;
    transform: translateY(0);
}

.tech-card:hover {
    box-shadow: 4px 4px 0 #C8D8E8;
}

.card-header {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 1rem;
}

.card-title {
    font-family: 'Space Grotesk', sans-serif;
    font-weight: 600;
    font-size: 1rem;
    color: #1E2D3D;
}

.card-body {
    font-family: 'IBM Plex Sans', sans-serif;
    font-weight: 400;
    font-size: 0.9rem;
    color: #1A3A5C;
    line-height: 1.7;
    margin-bottom: 1rem;
}

.card-tag {
    font-family: 'IBM Plex Mono', monospace;
    font-size: 0.7rem;
    color: #7BA7CC;
    letter-spacing: 0.08em;
    padding: 0.2rem 0.5rem;
    border: 1px solid #C8D8E8;
    display: inline-block;
}

/* === Spec Table === */
.spec-table-container {
    overflow-x: auto;
}

.spec-table {
    width: 100%;
    border-collapse: collapse;
    font-family: 'IBM Plex Sans', sans-serif;
    font-size: 0.9rem;
}

.spec-table th {
    font-family: 'Space Grotesk', sans-serif;
    font-weight: 500;
    font-size: 0.75rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: #1A3A5C;
    background: #E0E0E0;
    padding: 0.75rem 1rem;
    text-align: left;
    border-bottom: 2px solid #C8D8E8;
}

.spec-table td {
    padding: 0.6rem 1rem;
    border-bottom: 1px solid #C8D8E8;
    color: #1E2D3D;
    background: #FFFFFF;
}

.spec-table tr:hover td {
    background: #F0F4F8;
}

/* === Monitoring Grid === */
.monitoring-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
}

.monitor-item {
    background: #FFFFFF;
    border: 1px solid #C8D8E8;
    padding: 2rem 1.5rem;
    text-align: center;
}

.monitor-value {
    font-family: 'Space Grotesk', sans-serif;
    font-weight: 700;
    font-size: 2.5rem;
    color: #1E2D3D;
    display: block;
    margin-bottom: 0.5rem;
}

.monitor-green {
    color: #66BB6A;
}

.monitor-orange {
    color: #FF7043;
}

.monitor-label {
    font-family: 'IBM Plex Sans', sans-serif;
    font-weight: 300;
    font-size: 0.8rem;
    color: #7BA7CC;
    letter-spacing: 0.03em;
}

/* === Spec Block === */
.spec-block {
    background: #FFFFFF;
    border: 1px solid #C8D8E8;
}

.spec-row {
    display: flex;
    justify-content: space-between;
    padding: 0.75rem 1.5rem;
    border-bottom: 1px solid #C8D8E8;
}

.spec-row:last-child {
    border-bottom: none;
}

.spec-key {
    font-family: 'IBM Plex Sans', sans-serif;
    font-weight: 500;
    font-size: 0.9rem;
    color: #1A3A5C;
}

.spec-val {
    font-family: 'IBM Plex Mono', monospace;
    font-size: 0.9rem;
    color: #1E2D3D;
}

/* === Footer === */
#tech-footer {
    padding: 2rem 3rem;
    border-top: 1px solid #C8D8E8;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    flex-wrap: wrap;
    position: relative;
    z-index: 1;
}

.footer-domain {
    font-family: 'Space Grotesk', sans-serif;
    font-weight: 700;
    font-size: 0.9rem;
    color: #2C3E50;
}

.footer-sep {
    color: #C8D8E8;
}

.footer-text {
    font-family: 'IBM Plex Sans', sans-serif;
    font-weight: 300;
    font-size: 0.8rem;
    color: #7BA7CC;
}

/* === Responsive === */
@media (max-width: 768px) {
    #sidebar {
        position: relative;
        width: 100%;
        height: auto;
        flex-direction: row;
        flex-wrap: wrap;
        padding: 1rem;
    }

    .sidebar-nav {
        flex-direction: row;
        gap: 0.5rem;
        flex-wrap: wrap;
    }

    .nav-item {
        border-left: none;
        border-bottom: 2px solid transparent;
    }

    .nav-item:hover,
    .nav-item.active {
        border-bottom-color: #4FC3F7;
        border-left-color: transparent;
    }

    #main-content {
        margin-left: 0;
    }

    .blueprint-grid {
        left: 0;
    }

    body {
        flex-direction: column;
    }

    .content-section {
        padding: 2rem 1.5rem;
    }

    .monitoring-grid {
        grid-template-columns: 1fr;
    }

    .sidebar-version {
        display: none;
    }
}