/* ===== TECHNOLOGY PAGE - Blueprint/Spec Aesthetic ===== */

/* Active nav state */
.nav-link.active {
    color: var(--accent);
}

.nav-link.active::after {
    width: 100%;
}

/* ===== Hero ===== */
.tech-hero {
    padding: 12rem 0 4rem;
    position: relative;
    background: var(--black);
}

.tech-hero-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: 4rem;
    align-items: end;
}

.tech-label {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 2rem;
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    color: var(--gray-500);
}

.tech-label .label-idx {
    color: var(--accent);
    font-weight: 700;
}

.tech-label .label-divider {
    color: var(--gray-700);
}

.tech-hero h1 {
    font-size: clamp(2.5rem, 6vw, 4.5rem);
    font-weight: 800;
    line-height: 1.05;
    letter-spacing: -0.03em;
}

.text-stroke {
    color: transparent;
    -webkit-text-stroke: 1.5px var(--accent);
}

.tech-hero-side {
    padding-bottom: 0.5rem;
}

.tech-hero-side p {
    font-size: 0.95rem;
    color: var(--gray-400);
    line-height: 1.7;
}

/* ===== Stats Bar ===== */
.stats-bar {
    padding: 2rem 0;
    background: var(--black-soft);
    border-top: 1px solid var(--gray-900);
    border-bottom: 1px solid var(--gray-900);
}

.stats-row {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 3rem;
}

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

.stat-item .stat-num {
    display: block;
    font-size: 1.75rem;
    font-weight: 800;
    color: var(--accent);
    line-height: 1;
    letter-spacing: -0.02em;
}

.stat-item .stat-label {
    display: block;
    font-size: 0.6rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    color: var(--gray-500);
    margin-top: 0.5rem;
}

.stat-divider {
    width: 1px;
    height: 40px;
    background: var(--gray-800);
}

/* ===== Section Headers ===== */
.section-head {
    margin-bottom: 4rem;
}

.head-label {
    display: flex;
    align-items: center;
    gap: 1rem;
    font-size: 0.65rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.2em;
    color: var(--gray-500);
    margin-bottom: 1.5rem;
}

.head-label span:first-child {
    color: var(--accent);
    font-weight: 700;
}

.head-line {
    flex: 0 0 60px;
    height: 1px;
    background: var(--gray-800);
}

.section-head h2 {
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    font-weight: 700;
    letter-spacing: -0.02em;
    margin-bottom: 1rem;
}

.section-head p {
    font-size: 1rem;
    color: var(--gray-400);
    max-width: 600px;
    line-height: 1.7;
}

/* ===== Stack Section ===== */
.stack-section {
    padding: 6rem 0;
    background: var(--black);
}

.stack-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
}

.stack-category {
    background: var(--black-soft);
    border: 1px solid var(--gray-900);
    padding: 2rem;
    position: relative;
    transition: all 0.3s ease;
}

.stack-category::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--accent);
    transition: width 0.4s var(--ease-out);
}

.stack-category:hover {
    border-color: var(--gray-800);
    background: var(--gray-950);
}

.stack-category:hover::before {
    width: 100%;
}

.cat-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.cat-icon {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gray-950);
    border: 1px solid var(--gray-800);
    color: var(--accent);
}

.cat-header h3 {
    font-size: 1rem;
    font-weight: 600;
}

.cat-list {
    list-style: none;
    margin-bottom: 1.5rem;
}

.cat-list li {
    font-size: 0.8rem;
    color: var(--gray-400);
    padding: 0.5rem 0;
    border-bottom: 1px solid var(--gray-900);
    transition: color 0.3s ease;
}

.cat-list li:last-child {
    border-bottom: none;
}

.cat-list li.primary {
    color: var(--white);
    font-weight: 500;
}

.cat-list li.primary::before {
    content: '●';
    color: var(--accent);
    margin-right: 0.5rem;
    font-size: 0.5rem;
    vertical-align: middle;
}

.cat-note {
    font-size: 0.65rem;
    color: var(--gray-600);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    padding-top: 1rem;
    border-top: 1px solid var(--gray-900);
}

/* ===== Architecture Section ===== */
.arch-section {
    padding: 6rem 0;
    background: var(--black-soft);
    border-top: 1px solid var(--gray-900);
}

.arch-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
}

.arch-card {
    background: var(--black);
    border: 1px solid var(--gray-900);
    padding: 2rem;
    position: relative;
    transition: all 0.3s ease;
}

.arch-card:hover {
    border-color: var(--accent);
}

.arch-num {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--gray-900);
    line-height: 1;
    margin-bottom: 1.5rem;
    transition: color 0.3s ease;
}

.arch-card:hover .arch-num {
    color: var(--accent);
}

.arch-card h3 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
}

.arch-card p {
    font-size: 0.85rem;
    color: var(--gray-400);
    line-height: 1.7;
    margin-bottom: 1.5rem;
}

.arch-tag {
    display: inline-block;
    font-size: 0.6rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    color: var(--accent);
    padding: 0.4rem 0.75rem;
    background: var(--accent-dim);
    border: 1px solid var(--accent-medium);
}

/* ===== Flow Section ===== */
.flow-section {
    padding: 6rem 0;
    background: var(--black);
    border-top: 1px solid var(--gray-900);
}

.flow-diagram-wrapper {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 2rem;
    padding: 4rem 2rem;
    background: var(--black-soft);
    border: 1px solid var(--gray-900);
    margin-bottom: 3rem;
    overflow-x: auto;
}

.flow-layer {
    text-align: center;
}

.layer-title {
    font-size: 0.6rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.2em;
    color: var(--gray-600);
    margin-bottom: 1rem;
}

.layer-nodes {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.flow-node {
    padding: 0.6rem 1rem;
    font-size: 0.7rem;
    font-weight: 500;
    color: var(--gray-400);
    background: var(--black);
    border: 1px solid var(--gray-800);
    white-space: nowrap;
    transition: all 0.3s ease;
}

.flow-node:hover {
    border-color: var(--gray-600);
    color: var(--white);
}

.flow-node-main {
    padding: 1.25rem 2rem;
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--black);
    background: var(--accent);
    border-color: var(--accent);
}

.flow-center .layer-nodes {
    min-width: 180px;
}

.flow-arrows {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
}

.arrow-line {
    width: 80px;
    height: 1px;
    background: var(--gray-700);
    position: relative;
}

.arrow-line::after {
    content: '';
    position: absolute;
    right: 0;
    top: 50%;
    transform: translateY(-50%);
    border: 4px solid transparent;
    border-left: 6px solid var(--gray-700);
}

.arrow-label {
    font-size: 0.55rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    color: var(--gray-600);
    white-space: nowrap;
}

.flow-features {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
}

.flow-feat {
    text-align: center;
    padding: 2rem 1rem;
    background: var(--black-soft);
    border: 1px solid var(--gray-900);
    transition: all 0.3s ease;
}

.flow-feat:hover {
    border-color: var(--gray-800);
}

.feat-marker {
    font-size: 1.5rem;
    color: var(--accent);
    margin-bottom: 1rem;
}

.flow-feat h4 {
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.flow-feat p {
    font-size: 0.75rem;
    color: var(--gray-500);
    line-height: 1.5;
}

/* ===== Method Section ===== */
.method-section {
    padding: 6rem 0;
    background: var(--black-soft);
    border-top: 1px solid var(--gray-900);
}

.method-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 0;
}

.method-card {
    padding: 2.5rem 2rem;
    border: 1px solid var(--gray-900);
    border-right: none;
    position: relative;
    transition: all 0.3s ease;
}

.method-card:last-child {
    border-right: 1px solid var(--gray-900);
}

.method-card:hover {
    background: var(--gray-950);
}

.method-card::before {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 3px;
    background: var(--accent);
    transition: width 0.4s var(--ease-out);
}

.method-card:hover::before {
    width: 100%;
}

.method-letter {
    font-size: 3rem;
    font-weight: 800;
    color: var(--gray-900);
    line-height: 1;
    margin-bottom: 1.5rem;
    transition: color 0.3s ease;
}

.method-card:hover .method-letter {
    color: var(--accent);
}

.method-content h3 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
}

.method-content p {
    font-size: 0.8rem;
    color: var(--gray-400);
    line-height: 1.6;
}

/* ===== CTA ===== */
.cta-section {
    padding: 8rem 0;
    background: var(--black);
}

.cta-box {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 3rem;
    padding: 4rem;
    border: 1px solid var(--gray-900);
    background: linear-gradient(135deg, rgba(204, 255, 0, 0.02) 0%, transparent 50%);
}

.cta-content h2 {
    font-size: clamp(1.5rem, 3.5vw, 2.25rem);
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 1rem;
    letter-spacing: -0.02em;
}

.cta-content p {
    font-size: 0.9rem;
    color: var(--gray-400);
}

/* ===== Responsive ===== */
@media (max-width: 1100px) {
    .stack-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .arch-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .flow-features {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .method-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .method-card {
        border-right: 1px solid var(--gray-900);
    }
    
    .method-card:nth-child(2) {
        border-right: 1px solid var(--gray-900);
    }
    
    .method-card:nth-child(3),
    .method-card:nth-child(4) {
        border-top: none;
    }
}

@media (max-width: 900px) {
    .tech-hero {
        padding: 10rem 0 4rem;
    }
    
    .tech-hero-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .stats-row {
        flex-wrap: wrap;
        gap: 2rem;
    }
    
    .stat-divider {
        display: none;
    }
    
    .stat-item {
        flex: 0 0 calc(50% - 1rem);
    }
    
    .flow-diagram-wrapper {
        flex-direction: column;
        padding: 3rem 1.5rem;
    }
    
    .flow-layer .layer-nodes {
        flex-direction: row;
        flex-wrap: wrap;
        justify-content: center;
    }
    
    .flow-arrows {
        transform: rotate(90deg);
        margin: 1rem 0;
    }
    
    .cta-box {
        flex-direction: column;
        text-align: center;
        padding: 3rem 2rem;
    }
}

@media (max-width: 600px) {
    .tech-hero h1 {
        font-size: 2rem;
    }
    
    .text-stroke {
        -webkit-text-stroke-width: 1px;
    }
    
    .stack-grid,
    .arch-grid {
        grid-template-columns: 1fr;
    }
    
    .flow-features {
        grid-template-columns: 1fr;
    }
    
    .method-grid {
        grid-template-columns: 1fr;
    }
    
    .method-card {
        border: 1px solid var(--gray-900);
        border-bottom: none;
    }
    
    .method-card:last-child {
        border-bottom: 1px solid var(--gray-900);
    }
}