/* ─────────────────────────────────────────────────────────────────────────
   kiau-inner.css  —  Shared styles for all Kiau Technologies inner pages
   Mirrors the design language of landing-a.html (Mission Portal)
   ───────────────────────────────────────────────────────────────────────── */

@font-face {
    font-family: "OCR_A";
    src: url("../fonts/OCR-A.ttf") format("truetype");
}

/* ── TOKENS ──────────────────────────────────────────────────────────── */
:root {
    --green:    #145b4f;
    --green-dk: #0d3d34;
    --green-md: #1a7a66;
    --green-lt: #1e6e5e;
    --cream:    #f9f5f2;
    --lav:      #da99d6;
    --rule:     rgba(249, 245, 242, 0.08);
    --gap:      1.5px;
}

/* ── RESET ───────────────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html, body { width: 100%; max-width: 100%; }
html { scroll-behavior: smooth; }

body {
    font-family: 'OCR_A', 'Roboto Mono', monospace;
    background: var(--green-dk);
    color: var(--cream);
    overflow-x: hidden;
}

/* ── NAV ─────────────────────────────────────────────────────────────── */
.kiau-nav {
    position: fixed;
    top: 0; left: 0; right: 0;
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1.1rem 4rem;
    background: rgba(13, 61, 52, 0.90);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    border-bottom: 1px solid var(--rule);
}
.kiau-nav-logo {
    font-family: 'OCR_A', monospace;
    font-size: 0.95rem;
    letter-spacing: 0.1em;
    color: var(--cream);
    text-decoration: none;
    display: flex;
    align-items: center;
    transition: opacity 0.2s;
}
.kiau-nav-logo:hover { opacity: 0.8; }
.nav-logo-img {
    height: 72px;
    width: auto;
    filter: brightness(0) invert(1);
    opacity: 0.9;
}
.kiau-nav-logo:hover .nav-logo-img { opacity: 1; }
.kiau-nav-links {
    display: flex;
    gap: 2.5rem;
    list-style: none;
    align-items: center;
}
.kiau-nav-links a {
    font-family: 'OCR_A', monospace;
    font-size: 0.72rem;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--cream);
    text-decoration: none;
    opacity: 0.82;
    transition: opacity 0.2s;
}
.kiau-nav-links a:hover { opacity: 1; }
.kiau-nav-links .nav-active { opacity: 1; color: var(--lav); }

/* ── PAGE HERO ───────────────────────────────────────────────────────── */
.page-hero {
    padding: calc(70px + 4.5rem) 4rem 3.5rem;
    max-width: 1320px;
    margin: 0 auto;
    border-bottom: 1px solid var(--rule);
}
.page-hero-label {
    display: block;
    font-size: 0.64rem;
    letter-spacing: 0.24em;
    text-transform: uppercase;
    color: var(--lav);
    opacity: 0.88;
    margin-bottom: 1.4rem;
}
.page-hero-title {
    font-family: 'OCR_A', monospace;
    font-size: clamp(2rem, 5vw, 3.8rem);
    font-weight: 400;
    letter-spacing: 0.03em;
    line-height: 1.08;
    color: var(--cream);
    margin-bottom: 1.4rem;
}
.page-hero-kanji {
    font-family: serif;
    font-size: clamp(0.8rem, 1.5vw, 1rem);
    letter-spacing: 0.16em;
    color: var(--lav);
    opacity: 0.80;
    margin-bottom: 1.8rem;
}
.page-hero-sub {
    font-family: 'Roboto Mono', monospace;
    font-size: clamp(0.85rem, 1.8vw, 1rem);
    font-weight: 300;
    font-style: italic;
    line-height: 1.80;
    color: var(--cream);
    opacity: 0.75;
    max-width: 640px;
}

/* ── CONTENT WRAPPER ─────────────────────────────────────────────────── */
.page-content {
    max-width: 1320px;
    margin: 0 auto;
    padding: 4.5rem 4rem;
}

/* ── SECTIONS ────────────────────────────────────────────────────────── */
.page-section {
    margin-bottom: 4.5rem;
    padding-bottom: 4.5rem;
    border-bottom: 1px solid var(--rule);
}
.page-section:last-child {
    margin-bottom: 0;
    padding-bottom: 0;
    border-bottom: none;
}

.section-eyebrow {
    display: block;
    font-size: 0.64rem;
    letter-spacing: 0.22em;
    text-transform: uppercase;
    color: var(--lav);
    opacity: 0.85;
    margin-bottom: 1rem;
}
.section-heading {
    font-family: 'OCR_A', monospace;
    font-size: clamp(1.1rem, 2.5vw, 1.65rem);
    font-weight: 400;
    letter-spacing: 0.03em;
    color: var(--cream);
    margin-bottom: 1.4rem;
    line-height: 1.2;
}
.section-header-row {
    display: flex;
    align-items: baseline;
    gap: 1.5rem;
    margin-bottom: 2.4rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--rule);
}
.section-header-row .section-eyebrow { margin-bottom: 0; }
.section-header-row .section-heading { margin-bottom: 0; }

/* ── PROSE ───────────────────────────────────────────────────────────── */
.prose {
    font-family: 'Roboto Mono', monospace;
    font-size: clamp(0.82rem, 1.5vw, 0.92rem);
    font-weight: 300;
    line-height: 1.95;
    color: var(--cream);
    opacity: 0.82;
    max-width: 740px;
}
.prose p + p { margin-top: 1.2em; }
.prose ul, .prose ol {
    margin: 1.2em 0 1.2em 1.6em;
    display: flex;
    flex-direction: column;
    gap: 0.5em;
}
.prose li { line-height: 1.75; }
.prose strong { font-weight: 600; opacity: 1; color: var(--cream); }
.prose em { font-style: italic; color: var(--lav); opacity: 0.9; }
.prose a { color: var(--lav); text-decoration: none; border-bottom: 1px solid rgba(218,153,214,0.3); transition: border-color 0.2s; }
.prose a:hover { border-color: var(--lav); }

/* ── CARD GRID ───────────────────────────────────────────────────────── */
.kiau-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: var(--gap);
    background: rgba(249, 245, 242, 0.07);
    margin-top: 2.5rem;
}
.kiau-card {
    background: var(--green-dk);
    padding: 2rem 1.75rem 1.8rem;
    display: flex;
    flex-direction: column;
    gap: 0.8rem;
}
.kiau-card-num {
    font-size: 0.58rem;
    letter-spacing: 0.2em;
    color: var(--lav);
    opacity: 0.72;
}
.kiau-card-title {
    font-family: 'OCR_A', monospace;
    font-size: 0.92rem;
    letter-spacing: 0.03em;
    color: var(--cream);
    line-height: 1.3;
}
.kiau-card-body {
    font-family: 'Roboto Mono', monospace;
    font-size: 0.76rem;
    line-height: 1.75;
    color: var(--cream);
    opacity: 0.72;
    font-weight: 300;
    flex: 1;
}
.kiau-card-tag {
    display: inline-block;
    font-size: 0.58rem;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    color: var(--lav);
    border: 1px solid rgba(218,153,214,0.3);
    padding: 0.2rem 0.55rem;
    border-radius: 2px;
    opacity: 0.80;
    margin-top: 0.4rem;
}

/* ── HIGHLIGHT ROW ───────────────────────────────────────────────────── */
.highlight-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--gap);
    background: rgba(249, 245, 242, 0.07);
    margin-top: 2.5rem;
}
.highlight-cell {
    background: var(--green-dk);
    padding: 2.2rem 2rem;
}
.highlight-cell-label {
    font-size: 0.6rem;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--lav);
    opacity: 0.75;
    margin-bottom: 0.6rem;
    display: block;
}
.highlight-cell-value {
    font-family: 'OCR_A', monospace;
    font-size: clamp(1.5rem, 3.5vw, 2.4rem);
    color: var(--cream);
    line-height: 1.1;
}
.highlight-cell-sub {
    font-family: 'Roboto Mono', monospace;
    font-size: 0.76rem;
    font-weight: 300;
    color: var(--cream);
    opacity: 0.65;
    margin-top: 0.5rem;
}

/* ── STEP LIST ───────────────────────────────────────────────────────── */
.step-list {
    display: flex;
    flex-direction: column;
    gap: var(--gap);
    background: rgba(249, 245, 242, 0.07);
    margin-top: 2.5rem;
}
.step-item {
    background: var(--green-dk);
    padding: 1.8rem 2rem;
    display: flex;
    gap: 2rem;
    align-items: flex-start;
}
.step-num {
    font-size: 0.58rem;
    letter-spacing: 0.2em;
    color: var(--lav);
    opacity: 0.72;
    min-width: 2.4rem;
    padding-top: 0.3rem;
}
.step-body { flex: 1; }
.step-title {
    font-family: 'OCR_A', monospace;
    font-size: 0.9rem;
    color: var(--cream);
    margin-bottom: 0.5rem;
}
.step-desc {
    font-family: 'Roboto Mono', monospace;
    font-size: 0.76rem;
    line-height: 1.75;
    color: var(--cream);
    opacity: 0.70;
    font-weight: 300;
}

/* ── INTERACTIVE TOOL FRAME ──────────────────────────────────────────── */
/* Wrapper for embedded JS tools (graph, 3D viewer, etc.) */
.tool-frame {
    margin-top: 2.5rem;
    border: 1px solid var(--rule);
    border-radius: 2px;
    overflow: hidden;
    background: var(--green-dk);
    min-height: 500px;
    position: relative;
}
.tool-frame-label {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 0.8rem 1.5rem;
    border-bottom: 1px solid var(--rule);
    font-size: 0.6rem;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    opacity: 0.55;
}
.tool-frame-label::before {
    content: '';
    width: 6px; height: 6px;
    background: var(--lav);
    border-radius: 50%;
    opacity: 0.7;
}

/* ── FOOTER ──────────────────────────────────────────────────────────── */
.kiau-footer {
    max-width: 1320px;
    margin: 0 auto;
    padding: 2.5rem 4rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: 0.65rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    opacity: 0.52;
    border-top: 1px solid var(--rule);
}
.kiau-footer a { color: inherit; text-decoration: none; }
.kiau-footer a:hover { opacity: 0.8; }
.kiau-footer-links { display: flex; gap: 2rem; }

/* ── RESPONSIVE ──────────────────────────────────────────────────────── */
@media (max-width: 960px) {
    .kiau-nav    { padding: 0.8rem 2rem; }
    .kiau-nav-links { gap: 1.5rem; }
    .nav-logo-img { height: 56px; }
    .page-hero   { padding: calc(56px + 3.5rem) 2rem 2.5rem; }
    .page-content { padding: 3rem 2rem; }
    .highlight-row { grid-template-columns: 1fr; }
    .kiau-footer { padding: 2rem 2rem; }
}
@media (max-width: 600px) {
    .kiau-nav    { padding: 0.5rem 1rem; }
    .kiau-nav-links { gap: 1rem; }
    .kiau-nav-links a { font-size: 0.64rem; letter-spacing: 0.1em; }
    .nav-logo-img { height: 40px; }
    .page-hero   { padding: calc(40px + 3rem) 1.2rem 2rem; }
    .page-content { padding: 2rem 1.2rem; }
    .kiau-grid   { grid-template-columns: 1fr; }
    .step-item   { flex-direction: column; gap: 0.5rem; }
    .kiau-footer { flex-direction: column; gap: 0.6rem; text-align: center; padding: 2rem 1.2rem; }
    .kiau-footer-links { justify-content: center; flex-wrap: wrap; gap: 1rem; }
    .section-header-row { flex-direction: column; gap: 0.4rem; }
    .highlight-cell { padding: 1.5rem 1.2rem; }
    .prose { font-size: 0.85rem; }
}