/* =========================================
   Salsa Security Page Styles
   ========================================= */

/* ─── Security Hero ─── */
.sec-hero {
    padding: 180px 40px 100px;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.sec-hero::before {
    content: '';
    position: absolute;
    top: -200px;
    left: 50%;
    transform: translateX(-50%);
    width: 800px;
    height: 800px;
    background: radial-gradient(circle, rgba(232,70,30,0.15) 0%, transparent 70%);
    filter: blur(100px);
    z-index: 0;
    pointer-events: none;
}

.sec-hero-inner {
    position: relative;
    z-index: 1;
    max-width: 780px;
    margin: 0 auto;
}

.sec-hero h1 {
    font-size: clamp(2.5rem, 6vw, 3.75rem);
    font-weight: 700;
    line-height: 1.1;
    letter-spacing: -0.03em;
    margin-bottom: 24px;
}

/* ─── Section blocks ─── */
.sec-block {
    padding: 120px 40px;
}

.sec-block.alt {
    background: var(--bg-surface);
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
}

.sec-block .section-sub {
    margin-bottom: 48px;
}

/* ─── Split layout ─── */
.sec-split {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 64px;
    align-items: center;
}

.sec-split.reverse {
    direction: rtl;
}
.sec-split.reverse > * {
    direction: ltr;
}

.sec-text p {
    font-size: 1rem;
    color: var(--text-2);
    line-height: 1.75;
    margin-top: 16px;
}

.sec-text p strong {
    color: var(--text-1);
}

/* ─── Patent badge ─── */
.patent-badge {
    display: inline-block;
    padding: 5px 14px;
    border: 1px solid rgba(232,70,30,0.3);
    border-radius: 100px;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--accent);
    letter-spacing: 0.03em;
    margin-bottom: 20px;
    background: rgba(232,70,30,0.06);
}

/* ─── Nav active ─── */
.nav-active {
    color: var(--text-1) !important;
}

/* ─── DSP Frame Diagram ─── */
.frame-diagram {
    background: var(--bg-surface);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 24px;
    font-family: var(--mono);
    font-size: 0.75rem;
}

.frame-title {
    font-family: var(--font);
    font-size: 0.8125rem;
    font-weight: 600;
    color: var(--text-2);
    margin-bottom: 16px;
    text-align: center;
}

.frame-row {
    display: flex;
    gap: 4px;
    margin-bottom: 4px;
}

.frame-cell {
    flex: 1;
    padding: 10px 8px;
    border-radius: 4px;
    display: flex;
    flex-direction: column;
    gap: 3px;
    text-align: center;
}

.frame-cell.wide {
    flex: 1;
}

.frame-row.header .frame-cell {
    background: rgba(96,165,250,0.08);
    border: 1px solid rgba(96,165,250,0.15);
}

.frame-row.bytecode .frame-cell {
    background: rgba(232,70,30,0.08);
    border: 1px solid rgba(232,70,30,0.2);
}

.frame-row.signature .frame-cell {
    background: rgba(167,139,250,0.08);
    border: 1px solid rgba(167,139,250,0.15);
}

.frame-row.checksum .frame-cell {
    background: rgba(74,222,128,0.08);
    border: 1px solid rgba(74,222,128,0.15);
}

.cell-label {
    font-family: var(--font);
    font-size: 0.6875rem;
    font-weight: 600;
    color: var(--text-2);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.cell-val {
    color: var(--text-1);
    font-size: 0.75rem;
}

.cell-size {
    color: var(--text-3);
    font-size: 0.625rem;
}

/* ─── Gates grid ─── */
.gates-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 16px;
    margin-top: 48px;
}

.gate-card {
    padding: 24px 20px;
    background: var(--bg-elevated);
    border: 1px solid var(--border);
    border-radius: 8px;
    text-align: left;
    transition: all 0.2s;
}

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

.gate-card.accent {
    border-color: var(--accent);
    background: var(--accent-soft);
}

.gate-num {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: rgba(255,255,255,0.06);
    color: var(--text-2);
    font-size: 0.75rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 14px;
}

.gate-card.accent .gate-num {
    background: var(--accent);
    color: #fff;
}

.gate-card h3 {
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--text-1);
}

.gate-card p {
    font-size: 0.8125rem;
    color: var(--text-2);
    line-height: 1.55;
}

.gate-card p code {
    font-family: var(--mono);
    font-size: 0.75rem;
    padding: 2px 5px;
    background: rgba(255,255,255,0.06);
    border-radius: 3px;
    color: var(--text-1);
}

/* ─── Performance stat ─── */
.perf-stat {
    margin-top: 48px;
    padding: 32px;
    background: var(--bg-elevated);
    border: 1px solid var(--border);
    border-radius: 8px;
    text-align: center;
}

.stat-number {
    font-size: 3rem;
    font-weight: 700;
    letter-spacing: -0.03em;
    font-family: var(--mono);
    color: var(--accent);
    line-height: 1;
    margin-bottom: 8px;
}

.stat-label {
    font-size: 0.9375rem;
    color: var(--text-2);
}

/* ─── Intent table ─── */
.intent-table {
    margin-top: 48px;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

.intent-table table {
    width: 100%;
    border-collapse: collapse;
    text-align: left;
    font-size: 0.875rem;
}

.intent-table th {
    padding: 12px 16px;
    font-weight: 600;
    font-size: 0.75rem;
    color: var(--text-3);
    border-bottom: 1px solid var(--border);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.intent-table td {
    padding: 14px 16px;
    border-bottom: 1px solid var(--border);
    color: var(--text-2);
}

.intent-table tr:hover td {
    background: var(--bg-hover);
}

.intent-table code {
    font-family: var(--mono);
    font-size: 0.8125rem;
    color: var(--text-1);
}

.intent-dot {
    display: inline-block;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    margin-right: 8px;
    vertical-align: middle;
}

.intent-dot.green  { background: var(--green); }
.intent-dot.blue   { background: var(--blue); }
.intent-dot.yellow { background: #fbbf24; }
.intent-dot.orange { background: var(--orange); }
.intent-dot.red    { background: var(--red); }

/* ─── Sandbox architecture diagram ─── */
.sandbox-arch {
    margin-top: 48px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.arch-layer {
    padding: 28px;
    border-radius: 10px;
    position: relative;
}

.arch-layer.host {
    background: var(--bg-elevated);
    border: 1px solid var(--border);
}

.arch-layer.sandbox {
    background: rgba(232,70,30,0.06);
    border: 1px dashed rgba(232,70,30,0.3);
    margin-top: 0;
}

.arch-label {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--text-3);
    margin-bottom: 16px;
}

.arch-items {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

.arch-item {
    padding: 8px 14px;
    background: rgba(255,255,255,0.04);
    border: 1px solid rgba(255,255,255,0.06);
    border-radius: 6px;
    font-size: 0.8125rem;
    font-family: var(--mono);
    color: var(--text-2);
}

.arch-connector {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
    padding: 16px 0;
    position: relative;
}

.arch-connector::before {
    content: '';
    width: 1px;
    height: 100%;
    background: var(--border-hover);
    position: absolute;
    left: 50%;
}

.arch-connector span {
    position: relative;
    z-index: 1;
    font-size: 0.75rem;
    font-weight: 600;
    font-family: var(--mono);
    color: var(--accent);
    background: var(--bg-elevated);
    padding: 2px 10px;
    border-radius: 4px;
}

.arch-connector .connector-note {
    font-family: var(--font);
    font-weight: 400;
    color: var(--text-3);
    font-size: 0.6875rem;
}

/* ─── Sandbox fact cards ─── */
.sandbox-facts {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
    margin-top: 48px;
}

.fact-card {
    padding: 24px;
    background: var(--bg-elevated);
    border: 1px solid var(--border);
    border-radius: 8px;
}

.fact-card h4 {
    font-size: 0.9375rem;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--text-1);
}

.fact-card p {
    font-size: 0.8125rem;
    color: var(--text-2);
    line-height: 1.6;
}

/* ─── CommandGuard rules ─── */
.guard-rules {
    margin-top: 24px;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.guard-rule {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 0.875rem;
    color: var(--text-2);
}

.guard-icon {
    width: 18px;
    height: 18px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.guard-icon.check {
    background: rgba(74,222,128,0.15);
    border: 1px solid rgba(74,222,128,0.3);
}

.guard-icon.check::after {
    content: '';
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--green);
}

/* ─── Code block ─── */
.code-block {
    background: var(--bg-elevated);
    border: 1px solid var(--border);
    border-radius: 8px;
    overflow: hidden;
}

.code-header {
    padding: 10px 16px;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-3);
    border-bottom: 1px solid var(--border);
    background: rgba(255,255,255,0.02);
}

.code-block pre {
    padding: 20px;
    margin: 0;
    overflow-x: auto;
}

.code-block code {
    font-family: var(--mono);
    font-size: 0.8125rem;
    line-height: 1.7;
    color: var(--text-2);
}

.code-block .kw { color: var(--purple); }
.code-block .ty { color: var(--cyan); }
.code-block .fn { color: var(--blue); }
.code-block .cm { color: var(--text-3); font-style: italic; }

/* ─── Audit trail features ─── */
.audit-features {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
    margin-top: 48px;
}

.audit-card {
    padding: 24px;
    background: var(--bg-elevated);
    border: 1px solid var(--border);
    border-radius: 8px;
}

.audit-card h4 {
    font-size: 0.9375rem;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--text-1);
}

.audit-card p {
    font-size: 0.8125rem;
    color: var(--text-2);
    line-height: 1.6;
}

/* ─── Rust stats ─── */
.rust-stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
    margin-top: 48px;
}

.rust-stat {
    padding: 28px 20px;
    background: var(--bg-surface);
    border: 1px solid var(--border);
    border-radius: 8px;
    text-align: center;
}

.rs-number {
    font-size: 2.25rem;
    font-weight: 700;
    font-family: var(--mono);
    color: var(--text-1);
    letter-spacing: -0.02em;
    line-height: 1;
    margin-bottom: 8px;
}

.rs-label {
    font-size: 0.8125rem;
    color: var(--text-3);
}

/* ─── Crate breakdown ─── */
.crate-breakdown {
    margin-top: 48px;
}

.crate-breakdown h3 {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 24px;
    color: var(--text-1);
}

.crate-grid {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.crate-row {
    display: grid;
    grid-template-columns: 140px 1fr 80px;
    gap: 16px;
    align-items: center;
    padding: 12px 0;
    border-bottom: 1px solid var(--border);
}

.crate-name {
    font-family: var(--mono);
    font-size: 0.8125rem;
    font-weight: 500;
    color: var(--text-1);
}

.crate-bar {
    height: 6px;
    background: rgba(255,255,255,0.04);
    border-radius: 3px;
    overflow: hidden;
}

.bar-fill {
    display: block;
    height: 100%;
    background: var(--accent);
    border-radius: 3px;
    transition: width 0.6s var(--ease);
}

.crate-lines {
    font-family: var(--mono);
    font-size: 0.75rem;
    color: var(--text-3);
    text-align: right;
}

.crate-desc {
    grid-column: 1 / -1;
    font-size: 0.8125rem;
    color: var(--text-3);
    padding-left: 0;
    margin-top: -4px;
}

/* ─── Rust companies ─── */
.rust-companies {
    margin-top: 64px;
}

.rust-companies h3 {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 12px;
    color: var(--text-1);
}

.rust-why {
    font-size: 1rem;
    color: var(--text-2);
    line-height: 1.7;
    max-width: 700px;
    margin-bottom: 32px;
}

.rust-why strong {
    color: var(--text-1);
}

.company-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
}

.company-card {
    padding: 24px;
    background: var(--bg-surface);
    border: 1px solid var(--border);
    border-radius: 8px;
    transition: all 0.2s;
}

.company-card:hover {
    border-color: var(--border-hover);
    background: var(--bg-elevated);
}

.company-card h4 {
    font-size: 0.9375rem;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--text-1);
}

.company-card p {
    font-size: 0.8125rem;
    color: var(--text-2);
    line-height: 1.6;
}

/* ─── Competitive moat ─── */
.moat-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
    margin-top: 48px;
}

.moat-card {
    padding: 28px 24px;
    background: var(--bg-elevated);
    border: 1px solid var(--border);
    border-radius: 8px;
    text-align: left;
    transition: all 0.2s;
}

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

.moat-x {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background: rgba(248,113,113,0.12);
    border: 1px solid rgba(248,113,113,0.25);
    margin-bottom: 16px;
    position: relative;
}

.moat-x::before,
.moat-x::after {
    content: '';
    position: absolute;
    width: 10px;
    height: 1.5px;
    background: var(--red);
    top: 50%;
    left: 50%;
}
.moat-x::before { transform: translate(-50%, -50%) rotate(45deg); }
.moat-x::after  { transform: translate(-50%, -50%) rotate(-45deg); }

.moat-card h4 {
    font-size: 0.9375rem;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--text-1);
}

.moat-card p {
    font-size: 0.8125rem;
    color: var(--text-2);
    line-height: 1.6;
}

.moat-card p em {
    color: var(--text-1);
    font-style: italic;
}

/* ─── Light mode overrides ─── */
html.light .sec-hero::before {
    background: radial-gradient(circle, rgba(209,61,21,0.06) 0%, transparent 70%);
}

html.light .patent-badge {
    border-color: rgba(209,61,21,0.25);
    background: rgba(209,61,21,0.04);
}

html.light .frame-row.header .frame-cell {
    background: rgba(37,99,235,0.06);
    border-color: rgba(37,99,235,0.12);
}
html.light .frame-row.bytecode .frame-cell {
    background: rgba(209,61,21,0.06);
    border-color: rgba(209,61,21,0.15);
}
html.light .frame-row.signature .frame-cell {
    background: rgba(124,58,237,0.06);
    border-color: rgba(124,58,237,0.12);
}
html.light .frame-row.checksum .frame-cell {
    background: rgba(22,163,74,0.06);
    border-color: rgba(22,163,74,0.12);
}

html.light .gate-num {
    background: rgba(0,0,0,0.05);
}

html.light .arch-item {
    background: rgba(0,0,0,0.03);
    border-color: rgba(0,0,0,0.06);
}

html.light .arch-layer.sandbox {
    background: rgba(209,61,21,0.03);
    border-color: rgba(209,61,21,0.2);
}

html.light .guard-icon.check {
    background: rgba(22,163,74,0.1);
    border-color: rgba(22,163,74,0.2);
}

html.light .code-block code {
    color: var(--text-2);
}

html.light .moat-x {
    background: rgba(220,38,38,0.08);
    border-color: rgba(220,38,38,0.18);
}

/* ─── Responsive ─── */
@media (max-width: 1024px) {
    .gates-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    .audit-features {
        grid-template-columns: repeat(2, 1fr);
    }
    .crate-row {
        grid-template-columns: 120px 1fr 70px;
    }
}

@media (max-width: 900px) {
    .sec-split {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    .sec-split.reverse {
        direction: ltr;
    }

    .gates-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .rust-stats {
        grid-template-columns: repeat(2, 1fr);
    }

    .company-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .moat-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .sec-hero { padding: 140px 24px 80px; }
    .sec-hero h1 { font-size: 2.25rem; }

    .sec-block { padding: 80px 24px; }

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

    .audit-features {
        grid-template-columns: 1fr;
    }

    .rust-stats {
        grid-template-columns: 1fr 1fr;
    }

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

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

    .sandbox-facts {
        grid-template-columns: 1fr;
    }

    .crate-row {
        grid-template-columns: 1fr 60px;
    }
    .crate-bar {
        display: none;
    }

    .frame-row.header {
        flex-wrap: wrap;
    }
}