/* ==========================================================================
   Hari.is-a.dev — Case studies & AI Lab
   ========================================================================== */

.projects-list {
    display: grid;
    gap: 1.5rem;
}

/* --------------------------------------------------------------------------
   Case study card
   -------------------------------------------------------------------------- */

.case-study {
    overflow: hidden;
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    background: var(--surface);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    box-shadow: var(--shadow);
    transition: border-color var(--transition);
}

.case-study:hover {
    border-color: var(--accent-border);
}

.case-study.is-open {
    border-color: var(--accent-border);
}

.case-summary {
    padding: clamp(1.4rem, 3vw, 2rem);
}

.case-meta {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: .5rem;
    margin-bottom: 1rem;
}

.case-category {
    padding: .25rem .7rem;
    border: 1px solid var(--accent-border);
    border-radius: var(--radius-pill);
    background: var(--accent-soft);
    color: var(--accent-light);
    font-size: .72rem;
    font-weight: 600;
    letter-spacing: .05em;
    text-transform: uppercase;
}

.case-status {
    padding: .25rem .7rem;
    border: 1px solid rgba(34, 197, 94, .28);
    border-radius: var(--radius-pill);
    background: rgba(34, 197, 94, .08);
    color: #86efac;
    font-size: .72rem;
    font-weight: 600;
}

.case-context {
    color: var(--text-muted);
    font-family: var(--font-mono);
    font-size: .78rem;
}

.case-title {
    margin-bottom: .6rem;
    font-size: var(--step-2);
}

.case-tagline {
    max-width: 68ch;
    margin-bottom: 1.25rem;
    color: var(--text-secondary);
    font-size: var(--step-1);
}

.case-stack {
    display: flex;
    flex-wrap: wrap;
    gap: .4rem;
    margin-bottom: 1.5rem;
}

.case-stack li {
    padding: .28rem .68rem;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    font-family: var(--font-mono);
    font-size: .74rem;
}

.case-toggle {
    display: inline-flex;
    align-items: center;
    gap: .6rem;
    padding: .7rem 1.3rem;
    border: 1px solid var(--accent-border);
    border-radius: var(--radius-pill);
    background: var(--accent-soft);
    color: var(--accent-light);
    font-size: var(--step--1);
    font-weight: 600;
    transition: background var(--transition), color var(--transition);
}

.case-toggle:hover {
    background: rgba(96, 165, 250, .2);
    color: var(--text);
}

.case-toggle-icon {
    display: inline-block;
    transition: transform var(--transition);
}

.case-toggle[aria-expanded="true"] .case-toggle-icon {
    transform: rotate(90deg);
}

/* --------------------------------------------------------------------------
   Expanded detail
   -------------------------------------------------------------------------- */

.case-detail {
    padding: 0 clamp(1.4rem, 3vw, 2rem) clamp(1.4rem, 3vw, 2rem);
    border-top: 1px solid var(--border);
}

.case-detail[hidden] {
    display: none;
}

.case-block {
    padding-top: 1.75rem;
}

.case-block h4 {
    display: flex;
    align-items: center;
    gap: .6rem;
    margin-bottom: .9rem;
    color: var(--text-muted);
    font-size: .78rem;
    font-weight: 700;
    letter-spacing: .12em;
    text-transform: uppercase;
}

.case-block h4::after {
    content: "";
    flex: 1;
    height: 1px;
    background: var(--border);
}

.case-problem {
    max-width: 78ch;
    color: var(--text-secondary);
}

.case-approach li,
.case-outcomes li {
    position: relative;
    max-width: 78ch;
    margin-bottom: .55rem;
    padding-left: 1.6rem;
    color: var(--text-secondary);
    font-size: var(--step-0);
}

.case-approach li::before {
    content: "→";
    position: absolute;
    left: 0;
    color: var(--accent-light);
}

.case-outcomes li::before {
    content: "✓";
    position: absolute;
    left: 0;
    color: var(--success);
}

/* --------------------------------------------------------------------------
   Architecture diagram — pure CSS, no library
   -------------------------------------------------------------------------- */

.architecture {
    display: grid;
    gap: .5rem;
    padding: 1.25rem;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: rgba(2, 6, 23, .5);
}

.arch-layer {
    display: grid;
    grid-template-columns: 110px 1fr;
    align-items: center;
    gap: 1rem;
}

.arch-layer-name {
    color: var(--text-muted);
    font-family: var(--font-mono);
    font-size: .74rem;
    letter-spacing: .06em;
    text-align: right;
    text-transform: uppercase;
}

.arch-nodes {
    display: flex;
    flex-wrap: wrap;
    gap: .5rem;
    padding: .7rem .85rem;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    background: rgba(255, 255, 255, .02);
}

.arch-node {
    padding: .3rem .7rem;
    border: 1px solid var(--accent-border);
    border-radius: 6px;
    background: var(--accent-soft);
    color: #dbeafe;
    font-family: var(--font-mono);
    font-size: .74rem;
}

.arch-connector {
    grid-column: 2;
    justify-self: center;
    height: 12px;
    color: var(--text-muted);
    font-size: .7rem;
    line-height: 1;
}

/* --------------------------------------------------------------------------
   Trade-off table — the architecture-mindset signal
   -------------------------------------------------------------------------- */

.decisions {
    display: grid;
    gap: 1rem;
}

.decision {
    padding: 1.25rem 1.4rem;
    border: 1px solid var(--border);
    border-left: 3px solid var(--accent-light);
    border-radius: var(--radius);
    background: rgba(255, 255, 255, .02);
}

.decision h5 {
    margin-bottom: .85rem;
    font-size: var(--step-0);
    font-weight: 700;
}

.decision-row {
    display: grid;
    grid-template-columns: 88px 1fr;
    gap: .75rem;
    margin-bottom: .5rem;
    font-size: var(--step--1);
}

.decision-label {
    color: var(--text-muted);
    font-family: var(--font-mono);
    font-size: .72rem;
    letter-spacing: .04em;
    text-transform: uppercase;
}

.decision-chose {
    color: var(--text);
    font-weight: 600;
}

.decision-why,
.decision-rejected {
    color: var(--text-secondary);
}

.decision-rejected {
    opacity: .82;
}

.case-links {
    display: flex;
    flex-wrap: wrap;
    gap: .75rem;
    margin-top: 1.75rem;
}

/* --------------------------------------------------------------------------
   AI Lab
   -------------------------------------------------------------------------- */

.lab-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(min(100%, 280px), 1fr));
    gap: 1.25rem;
}

.lab-card {
    display: flex;
    flex-direction: column;
    gap: .75rem;
    padding: 1.5rem;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: var(--surface);
    transition: transform var(--transition), border-color var(--transition);
}

.lab-card:hover {
    transform: translateY(-4px);
    border-color: var(--accent-border);
}

.lab-card-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: .75rem;
}

.lab-card h3 {
    font-size: var(--step-1);
}

.lab-status {
    flex-shrink: 0;
    padding: .2rem .65rem;
    border-radius: var(--radius-pill);
    font-size: .7rem;
    font-weight: 700;
    letter-spacing: .04em;
    text-transform: uppercase;
}

.lab-status[data-status="active"] {
    border: 1px solid rgba(34, 197, 94, .3);
    background: rgba(34, 197, 94, .1);
    color: #86efac;
}

.lab-status[data-status="building"] {
    border: 1px solid rgba(251, 191, 36, .3);
    background: rgba(251, 191, 36, .1);
    color: #fcd34d;
}

.lab-status[data-status="planned"] {
    border: 1px solid var(--border-strong);
    background: rgba(255, 255, 255, .04);
    color: var(--text-muted);
}

.lab-card p {
    flex: 1;
    color: var(--text-secondary);
    font-size: var(--step--1);
}

.lab-stack {
    display: flex;
    flex-wrap: wrap;
    gap: .35rem;
}

.lab-stack li {
    padding: .22rem .6rem;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--text-muted);
    font-family: var(--font-mono);
    font-size: .7rem;
}

/* --------------------------------------------------------------------------
   Responsive
   -------------------------------------------------------------------------- */

@media (max-width: 720px) {

    .arch-layer {
        grid-template-columns: 1fr;
        gap: .35rem;
    }

    .arch-layer-name {
        text-align: left;
    }

    .arch-connector {
        grid-column: 1;
        justify-self: start;
        margin-left: 1rem;
    }

    .decision-row {
        grid-template-columns: 1fr;
        gap: .15rem;
        margin-bottom: .75rem;
    }
}