/* ==========================================================================
   QArchAI — qarchai.com
   Global stylesheet
   ========================================================================== */

:root {
    /* Metallic sea blue: a cool, brushed-steel ground that fades from a lit
       top edge down to near-black, with warm controls sitting on top of it. */
    --bg-body: #061620;
    --bg-deep: #030b11;
    --bg-lift: #0e2a38;

    --bg-card: rgba(23, 56, 72, 0.55);
    --bg-card-hover: rgba(32, 72, 92, 0.68);
    --bg-sunken: rgba(5, 18, 26, 0.55);

    --text-main: #eef4f7;
    --text-sub: #a7bcc7;
    --text-muted: #7690a0;

    /* Warm control accent. */
    --accent: #ffb266;
    --accent-strong: #ffc189;
    --accent-ink: #1a0e03;
    /* Cool accent for text marks that should stay part of the ground. */
    --accent-ice: #7fd0ef;

    --border-glass: rgba(160, 205, 230, 0.13);
    --border-hover: rgba(180, 220, 245, 0.30);
    /* Brushed highlight along the top edge of raised surfaces. */
    --sheen: rgba(226, 245, 255, 0.10);

    --font-heading: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-body: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-mono: 'DM Mono', ui-monospace, SFMono-Regular, monospace;

    --radius-lg: 16px;
    --radius-md: 12px;
    --radius-sm: 6px;

    --transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

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

html {
    scroll-behavior: smooth;
    background-color: var(--bg-deep);
    color: var(--text-main);
    font-family: var(--font-body);
    -webkit-font-smoothing: antialiased;
}

/* The ground is three stacked washes, all fixed so the page fades as one
   surface instead of repeating per section:
     1. a cool sheen raking in from the upper left, for the brushed-metal read
     2. a broad sea-blue glow behind the hero
     3. the vertical fade from a lit top edge to a near-black foot */
body {
    overflow-x: hidden;
    position: relative;
    min-height: 100vh;
    background-color: var(--bg-deep);
    background-image:
        linear-gradient(103deg, rgba(190, 226, 245, 0.075) 0%, rgba(190, 226, 245, 0) 38%),
        radial-gradient(120% 62% at 50% -8%, rgba(31, 104, 138, 0.50) 0%, rgba(16, 58, 80, 0.20) 45%, rgba(6, 22, 32, 0) 78%),
        linear-gradient(180deg, #10303f 0%, #0a2231 26%, #071824 58%, #040e15 100%);
    background-repeat: no-repeat;
    background-attachment: fixed;
    background-size: cover;
}

@media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
    * { transition: none !important; animation: none !important; }
}

.container {
    max-width: 1240px;
    margin: 0 auto;
    padding: 0 32px;
    position: relative;
    z-index: 1;
}

.section,
.hero,
.footer {
    position: relative;
    z-index: 1;
}

/* Visible keyboard focus for accessibility */
a:focus-visible,
button:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 3px;
    border-radius: var(--radius-sm);
}

.skip-link {
    position: absolute;
    left: -9999px;
    top: 0;
    background: #ffffff;
    color: var(--bg-body);
    padding: 10px 18px;
    border-radius: var(--radius-sm);
    font-family: var(--font-mono);
    font-size: 14px;
    z-index: 100;
}

.skip-link:focus {
    left: 16px;
    top: 16px;
}

/* --- Header Navigation --- */
.navbar {
    padding: 28px 0;
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: relative;
    z-index: 20;
}

.navbar-brand {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
}

.brand-icon {
    width: 32px;
    height: 32px;
    border-radius: 6px;
    background: linear-gradient(160deg, var(--accent-strong) 0%, #f0913c 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-heading);
    font-weight: 800;
    color: var(--accent-ink);
    font-size: 16px;
}

.brand-name {
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 22px;
    letter-spacing: -0.5px;
    color: var(--text-main);
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 36px;
    list-style: none;
}

.nav-link {
    text-decoration: none;
    color: var(--text-sub);
    font-size: 15px;
    font-weight: 500;
    transition: var(--transition);
}

.nav-link:hover {
    color: var(--text-main);
}

.btn-header-cta {
    text-decoration: none;
    padding: 10px 20px;
    border-radius: var(--radius-sm);
    background: linear-gradient(180deg, var(--accent-strong) 0%, var(--accent) 100%);
    color: var(--accent-ink);
    font-family: var(--font-mono);
    font-weight: 500;
    font-size: 14px;
    transition: var(--transition);
    display: inline-block;
    white-space: nowrap;
}

.btn-header-cta:hover {
    background: linear-gradient(180deg, #ffd0a6 0%, var(--accent-strong) 100%);
}

/* --- Mobile menu --- */
.nav-toggle {
    display: none;
    background: rgba(255, 178, 102, 0.10);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-sm);
    padding: 9px 11px;
    cursor: pointer;
    line-height: 0;
}

.nav-toggle:hover {
    border-color: var(--border-hover);
}

.nav-toggle span {
    display: block;
    width: 18px;
    height: 2px;
    background: var(--accent);
    border-radius: 2px;
    transition: var(--transition);
}

.nav-toggle span + span {
    margin-top: 4px;
}

.nav-toggle[aria-expanded="true"] span:nth-child(1) {
    transform: translateY(6px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] span:nth-child(2) {
    opacity: 0;
}

.nav-toggle[aria-expanded="true"] span:nth-child(3) {
    transform: translateY(-6px) rotate(-45deg);
}

.mobile-menu {
    display: none;
    flex-direction: column;
    gap: 4px;
    list-style: none;
    background: var(--bg-card);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-md);
    padding: 12px;
    margin-bottom: 24px;
}

.mobile-menu.open {
    display: flex;
}

.mobile-menu a {
    display: block;
    padding: 12px 14px;
    border-radius: var(--radius-sm);
    text-decoration: none;
    color: var(--text-sub);
    font-size: 15px;
    font-weight: 500;
}

.mobile-menu a:hover {
    background: rgba(160, 205, 230, 0.09);
    color: var(--text-main);
}

/* --- Hero Section --- */
.hero {
    padding: 60px 0 70px;
}

.hero-title-group {
    max-width: 900px;
    margin-bottom: 20px;
}

.hero-title-primary {
    font-family: var(--font-heading);
    font-size: clamp(28px, 3.6vw, 44px);
    font-weight: 800;
    line-height: 1.1;
    letter-spacing: -1px;
    color: #ffffff;
    display: block;
}

.hero-title-secondary {
    font-family: var(--font-heading);
    font-size: clamp(28px, 3.6vw, 44px);
    font-weight: 700;
    line-height: 1.1;
    letter-spacing: -1px;
    color: #86a3b2;
    display: block;
}

.hero-subtitle {
    font-size: clamp(15px, 1.5vw, 17px);
    color: var(--text-sub);
    max-width: 740px;
    line-height: 1.6;
    margin-bottom: 32px;
    font-weight: 400;
}

.hero-actions {
    display: flex;
    align-items: center;
    gap: 16px;
    flex-wrap: wrap;
}

.btn-mono-primary {
    text-decoration: none;
    padding: 12px 24px;
    border-radius: var(--radius-sm);
    background: linear-gradient(180deg, var(--accent-strong) 0%, var(--accent) 100%);
    color: var(--accent-ink);
    font-family: var(--font-mono);
    font-weight: 500;
    font-size: 13.5px;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.btn-mono-primary:hover {
    background: linear-gradient(180deg, #ffd0a6 0%, var(--accent-strong) 100%);
    transform: translateY(-2px);
}

.btn-mono-secondary {
    text-decoration: none;
    padding: 12px 24px;
    border-radius: var(--radius-sm);
    background: rgba(255, 178, 102, 0.07);
    border: 1px solid rgba(255, 178, 102, 0.34);
    color: var(--accent-strong);
    font-family: var(--font-mono);
    font-weight: 500;
    font-size: 13.5px;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
}

.btn-mono-secondary:hover {
    background: rgba(255, 178, 102, 0.16);
    border-color: var(--accent);
}

/* Kept for the metric figures on the success cards. */
.stat-highlight {
    color: var(--accent-ice);
}

/* --- Section Shared --- */
.section {
    padding: 90px 0;
    /* A single hairline that fades out at both ends, so sections read as one
       continuous surface rather than stacked boxes. */
    border-top: 1px solid transparent;
    border-image: linear-gradient(90deg, transparent, var(--border-glass) 22%, var(--border-glass) 78%, transparent) 1;
}

.section-header {
    max-width: 1100px;
    margin-bottom: 52px;
}

.section-tag {
    font-family: var(--font-mono);
    font-size: 14px;
    color: var(--accent-ice);
    text-transform: uppercase;
    letter-spacing: 1.5px;
    margin-bottom: 14px;
    display: block;
}

.section-title {
    font-family: var(--font-heading);
    font-size: clamp(22px, 2.6vw, 34px);
    font-weight: 700;
    letter-spacing: -0.5px;
    margin-bottom: 16px;
    color: #ffffff;
    white-space: nowrap;
}

/* Was referenced in markup but never defined — supplies the intro paragraph
   that sits under each section title. */
.section-desc {
    font-size: clamp(15px, 1.5vw, 17px);
    color: var(--text-sub);
    line-height: 1.65;
    max-width: 760px;
    font-weight: 400;
}

/* --- About Us Section --- */
.mission-card {
    background:
        linear-gradient(180deg, var(--sheen) 0%, transparent 90px),
        var(--bg-card);
    -webkit-backdrop-filter: blur(6px);
    backdrop-filter: blur(6px);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-md);
    padding: 48px 40px;
    margin-bottom: 72px;
    position: relative;
    overflow: hidden;
}

.mission-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: linear-gradient(180deg, var(--accent-strong) 0%, var(--accent) 55%, #e08a3a 100%);
}

.mission-badge {
    display: inline-flex;
    align-items: center;
    padding: 6px 14px;
    border-radius: var(--radius-sm);
    background: rgba(160, 205, 230, 0.07);
    border: 1px solid var(--border-glass);
    color: var(--accent-ice);
    font-family: var(--font-mono);
    font-size: 13px;
    letter-spacing: 1.2px;
    text-transform: uppercase;
    margin-bottom: 24px;
}

.mission-quote {
    font-size: clamp(22px, 2.6vw, 26px);
    font-weight: 400;
    color: var(--text-main);
    line-height: 1.6;
    font-family: var(--font-body);
}

.sub-block {
    margin-bottom: 72px;
}

.sub-block:last-child {
    margin-bottom: 0;
}

.sub-header {
    margin-bottom: 32px;
}

.sub-header h3 {
    font-family: var(--font-heading);
    font-size: 23px;
    font-weight: 700;
    color: #ffffff;
}

.cards-3col {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
}

.info-card {
    background:
        linear-gradient(180deg, var(--sheen) 0%, transparent 80px),
        var(--bg-card);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-md);
    padding: 38px 32px;
    transition: var(--transition);
    display: flex;
    flex-direction: column;
}

.info-card:hover {
    border-color: var(--border-hover);
    background: var(--bg-card-hover);
    transform: translateY(-4px);
}

.info-card h3 {
    font-family: var(--font-heading);
    font-size: 24px;
    font-weight: 700;
    color: #ffffff;
    margin-bottom: 16px;
    line-height: 1.35;
}

.info-card p {
    font-size: 16px;
    color: var(--text-sub);
    line-height: 1.65;
    font-weight: 400;
}

/* --- Services Grid --- */
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
    gap: 24px;
}

.service-card {
    background:
        linear-gradient(180deg, var(--sheen) 0%, transparent 80px),
        var(--bg-card);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-lg);
    padding: 32px;
    transition: var(--transition);
    display: flex;
    flex-direction: column;
}

.service-card:hover {
    transform: translateY(-3px);
    border-color: var(--border-hover);
    background: var(--bg-card-hover);
}

.service-card h3 {
    font-family: var(--font-heading);
    font-size: 21px;
    font-weight: 700;
    margin-bottom: 12px;
    color: #ffffff;
}

.service-card p {
    color: var(--text-sub);
    font-size: 14.5px;
    line-height: 1.6;
}

/* --- EMAP Architecture Tabs --- */
.emap-card {
    background:
        linear-gradient(180deg, var(--sheen) 0%, transparent 110px),
        var(--bg-card);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-lg);
    padding: 40px;
}

.tab-nav {
    display: flex;
    gap: 12px;
    border-bottom: 1px solid var(--border-glass);
    padding-bottom: 16px;
    margin-bottom: 28px;
    overflow-x: auto;
}

.tab-btn {
    background: transparent;
    border: 1px solid transparent;
    padding: 10px 18px;
    border-radius: var(--radius-sm);
    color: var(--text-sub);
    font-family: var(--font-mono);
    font-size: 13px;
    cursor: pointer;
    transition: var(--transition);
    white-space: nowrap;
}

.tab-btn.active {
    color: var(--accent-ink);
    background: linear-gradient(180deg, var(--accent-strong) 0%, var(--accent) 100%);
    border-color: rgba(255, 178, 102, 0.5);
}

.tab-btn:hover:not(.active) { color: var(--text-main); }

.tab-pane {
    display: none;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    align-items: center;
}

.tab-pane.active {
    display: grid;
}

.tab-pane h3 {
    font-family: var(--font-heading);
    font-size: 24px;
    font-weight: 700;
    color: #ffffff;
    margin-bottom: 12px;
}

.tab-pane > div > p {
    color: var(--text-sub);
    line-height: 1.65;
    font-size: 15px;
}

.pointers-box {
    background: var(--bg-sunken);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-md);
    padding: 28px 24px;
    display: flex;
    flex-direction: column;
    gap: 18px;
}

.pointer-item {
    display: flex;
    align-items: flex-start;
    gap: 14px;
}

/* The list markers used to be 01/02/03; a drawn dot keeps the rhythm without
   the numbering. */
.pointer-item::before {
    content: '';
    flex: 0 0 auto;
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--accent-ice);
    margin-top: 8px;
}

.pointer-text {
    font-size: 14.5px;
    color: var(--text-main);
    line-height: 1.55;
    font-weight: 500;
}

/* --- Success Talks: horizontal swipeable hero cards --- */
.success-header {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: 32px;
    max-width: none;
}

.carousel-nav {
    display: flex;
    gap: 10px;
    flex-shrink: 0;
    padding-bottom: 4px;
}

.carousel-btn {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: linear-gradient(180deg, var(--accent-strong) 0%, var(--accent) 100%);
    border: 1px solid rgba(255, 178, 102, 0.5);
    color: var(--accent-ink);
    font-size: 17px;
    line-height: 1;
    cursor: pointer;
    transition: var(--transition);
}

.carousel-btn:hover:not(:disabled) {
    background: linear-gradient(180deg, #ffd0a6 0%, var(--accent-strong) 100%);
    transform: translateY(-1px);
}

.carousel-btn:disabled {
    opacity: 0.32;
    cursor: default;
}

.carousel-track {
    display: flex;
    gap: 24px;
    overflow-x: auto;
    scroll-snap-type: x mandatory;
    scroll-behavior: smooth;
    /* Room for the cards' hover lift, and no clipped focus ring. */
    padding: 6px 4px 22px;
    margin: -6px -4px -6px;
    scrollbar-width: none;
    -webkit-overflow-scrolling: touch;
    overscroll-behavior-x: contain;
}

.carousel-track::-webkit-scrollbar { display: none; }
.carousel-track:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

.talk-hero {
    flex: 0 0 100%;
    scroll-snap-align: center;
    background:
        linear-gradient(180deg, var(--sheen) 0%, transparent 110px),
        var(--bg-card);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-lg);
    padding: 44px 40px;
    display: grid;
    grid-template-columns: 1.35fr 1fr;
    gap: 44px;
    align-items: start;
    transition: var(--transition);
}

.talk-hero:hover {
    border-color: var(--border-hover);
    background: var(--bg-card-hover);
}

.talk-sector {
    font-family: var(--font-mono);
    font-size: 13px;
    color: var(--accent-ice);
    text-transform: uppercase;
    letter-spacing: 1.2px;
    margin-bottom: 16px;
}

.talk-hero h3 {
    font-family: var(--font-heading);
    font-size: clamp(22px, 2.4vw, 30px);
    font-weight: 700;
    color: #ffffff;
    letter-spacing: -0.5px;
    line-height: 1.25;
    margin-bottom: 18px;
}

.talk-hero-body .talk-standfirst {
    font-family: var(--font-heading);
    font-size: 16.5px;
    font-weight: 600;
    color: var(--accent-ice);
    line-height: 1.5;
    margin-bottom: 16px;
}

.talk-hero-body p {
    font-size: 15.5px;
    color: var(--text-sub);
    line-height: 1.7;
}

.talk-hero-body p + p {
    margin-top: 16px;
}

.talk-hero-panel {
    background: var(--bg-sunken);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-md);
    padding: 28px 26px;
    display: flex;
    flex-direction: column;
    gap: 22px;
}

.talk-stat-num {
    font-family: var(--font-heading);
    font-size: clamp(26px, 2.8vw, 32px);
    font-weight: 800;
    color: #ffffff;
    line-height: 1;
    letter-spacing: -0.5px;
    margin-bottom: 8px;
}

.talk-stat-label {
    font-size: 14px;
    color: var(--text-sub);
    line-height: 1.5;
}

.talk-outcome-label {
    font-family: var(--font-mono);
    font-size: 12.5px;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 1.2px;
}

.talk-outcome {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    font-size: 14.5px;
    color: var(--text-sub);
    line-height: 1.6;
}

.talk-outcome strong {
    color: var(--text-main);
    font-weight: 600;
}

.talk-outcome-icon {
    font-size: 15px;
    line-height: 1.5;
}

.carousel-dots {
    display: flex;
    justify-content: center;
    gap: 10px;
    margin-top: 10px;
}

.carousel-dot {
    width: 32px;
    height: 4px;
    border: none;
    padding: 0;
    border-radius: 2px;
    background: rgba(167, 188, 199, 0.26);
    cursor: pointer;
    transition: var(--transition);
}

.carousel-dot:hover { background: rgba(255, 178, 102, 0.5); }
.carousel-dot.active { background: rgba(255, 178, 102, 0.4); width: 46px; }

/* The active dot doubles as the autoplay progress bar. */
.carousel-dot.active::after {
    content: '';
    display: block;
    height: 100%;
    border-radius: 2px;
    background: var(--accent);
    transform-origin: left center;
    transform: scaleX(0);
}

.carousel[data-playing] .carousel-dot.active::after {
    animation: dot-progress var(--autoplay-duration, 3000ms) linear forwards;
}

@keyframes dot-progress {
    from { transform: scaleX(0); }
    to { transform: scaleX(1); }
}

/* --- Contact --- */
.contact-card {
    background:
        linear-gradient(180deg, var(--sheen) 0%, transparent 110px),
        var(--bg-card);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-lg);
    padding: 52px 44px;
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 48px;
    align-items: center;
}

.contact-card h3 {
    font-family: var(--font-heading);
    font-size: clamp(22px, 2.4vw, 28px);
    font-weight: 700;
    color: #ffffff;
    margin-bottom: 14px;
    line-height: 1.3;
}

.contact-card p {
    font-size: 16px;
    color: var(--text-sub);
    line-height: 1.65;
    margin-bottom: 28px;
}

.contact-actions {
    display: flex;
    gap: 14px;
    flex-wrap: wrap;
}

.contact-details {
    display: flex;
    flex-direction: column;
    gap: 22px;
    border-left: 1px solid var(--border-glass);
    padding-left: 40px;
}

.contact-detail-label {
    font-family: var(--font-mono);
    font-size: 12.5px;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 1.2px;
    margin-bottom: 6px;
}

.contact-detail-value {
    font-size: 15.5px;
    color: var(--text-main);
    text-decoration: none;
    transition: var(--transition);
    line-height: 1.5;
}

a.contact-detail-value:hover {
    color: var(--accent-ice);
}

/* --- Footer --- */
.footer {
    padding: 60px 0 40px;
    border-top: 1px solid var(--border-glass);
    color: var(--text-muted);
    font-size: 14px;
}

.footer-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 20px;
}

.footer-links {
    display: flex;
    gap: 28px;
    list-style: none;
    flex-wrap: wrap;
}

.footer-link {
    color: var(--text-sub);
    text-decoration: none;
    transition: var(--transition);
}

.footer-link:hover {
    color: #ffffff;
}

/* --- 404 --- */
.notfound {
    min-height: 70vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: flex-start;
    padding: 80px 0;
}

.notfound .code {
    font-family: var(--font-mono);
    font-size: 14px;
    color: var(--accent-ice);
    letter-spacing: 1.5px;
    margin-bottom: 18px;
}

/* --- Contact page form --- */
.contact-page {
    padding: 60px 0 90px;
}

.contact-form-layout {
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: 48px;
    align-items: start;
}

.form-card {
    background:
        linear-gradient(180deg, var(--sheen) 0%, transparent 110px),
        var(--bg-card);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-lg);
    padding: 40px 36px;
}

.field {
    margin-bottom: 24px;
}

.field-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
}

.field label {
    display: block;
    font-family: var(--font-mono);
    font-size: 12.5px;
    color: var(--text-sub);
    text-transform: uppercase;
    letter-spacing: 1.2px;
    margin-bottom: 10px;
}

.req { color: var(--accent-ice); }

.field input,
.field textarea {
    width: 100%;
    background: var(--bg-sunken);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-sm);
    padding: 13px 15px;
    color: var(--text-main);
    font-family: var(--font-body);
    font-size: 15px;
    line-height: 1.5;
    transition: var(--transition);
}

.field textarea {
    resize: vertical;
    min-height: 130px;
}

.field input::placeholder,
.field textarea::placeholder {
    color: #5c7684;
}

.field input:focus,
.field textarea:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(255, 178, 102, 0.15);
    background: rgba(3, 11, 17, 0.75);
}

.field input[aria-invalid="true"],
.field textarea[aria-invalid="true"] {
    border-color: #ef4444;
}

.field-hint {
    font-size: 12.5px;
    color: var(--text-muted);
    margin-top: 7px;
}

.field-error {
    font-size: 13px;
    color: #f87171;
    margin-top: 7px;
}

/* Honeypot — hidden from people, visible to naive bots. */
.hp-field {
    position: absolute;
    left: -9999px;
    width: 1px;
    height: 1px;
    overflow: hidden;
}

.form-actions {
    display: flex;
    gap: 14px;
    flex-wrap: wrap;
    align-items: center;
    margin-top: 4px;
}

button.btn-mono-primary,
button.btn-mono-secondary {
    border: none;
    cursor: pointer;
}

button.btn-mono-secondary { border: 1px solid var(--border-glass); }

button.btn-mono-primary:disabled {
    opacity: 0.6;
    cursor: default;
    transform: none;
}

.form-status {
    font-family: var(--font-mono);
    font-size: 13.5px;
    line-height: 1.6;
    margin-top: 20px;
}

.form-status:empty { margin-top: 0; }
.form-status.is-success { color: #4ade80; }
.form-status.is-error { color: #f87171; }

.contact-aside {
    border-left: 1px solid var(--border-glass);
    padding-left: 40px;
}

/* --- Mail client chooser --- */
.modal-backdrop {
    position: fixed;
    inset: 0;
    z-index: 200;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 24px;
    background: rgba(3, 12, 18, 0.80);
    -webkit-backdrop-filter: blur(4px);
    backdrop-filter: blur(4px);
}

.modal-backdrop[hidden] { display: none; }

.modal {
    background: var(--bg-card);
    border: 1px solid var(--border-hover);
    border-radius: var(--radius-lg);
    padding: 32px 30px;
    width: min(520px, 100%);
    max-height: 86vh;
    overflow-y: auto;
    box-shadow: 0 24px 60px rgba(0, 0, 0, 0.55);
}

.modal h2 {
    font-family: var(--font-heading);
    font-size: 21px;
    font-weight: 700;
    color: #ffffff;
    margin-bottom: 8px;
}

.modal-sub {
    font-size: 14.5px;
    color: var(--text-sub);
    line-height: 1.6;
    margin-bottom: 24px;
}

.mail-client-list {
    display: flex;
    flex-direction: column;
    gap: 10px;
    list-style: none;
    margin-bottom: 22px;
}

.mail-client {
    width: 100%;
    display: flex;
    align-items: center;
    gap: 14px;
    text-align: left;
    background: var(--bg-sunken);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-md);
    padding: 14px 16px;
    color: var(--text-main);
    font-family: var(--font-body);
    font-size: 15px;
    cursor: pointer;
    text-decoration: none;
    transition: var(--transition);
}

.mail-client:hover {
    border-color: var(--border-hover);
    background: var(--bg-card-hover);
    transform: translateY(-1px);
}

.mail-client-mark {
    flex: 0 0 auto;
    width: 34px;
    height: 34px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 178, 102, 0.14);
    border: 1px solid rgba(255, 178, 102, 0.34);
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 14px;
    color: var(--accent-ice);
}

.mail-client-name { font-weight: 600; }

.mail-client-note {
    display: block;
    font-size: 12.5px;
    color: var(--text-muted);
    margin-top: 2px;
    font-weight: 400;
}

.modal-footer {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
    align-items: center;
    border-top: 1px solid var(--border-glass);
    padding-top: 20px;
}

.modal-link {
    background: none;
    border: none;
    padding: 0;
    color: var(--text-sub);
    font-family: var(--font-mono);
    font-size: 13px;
    cursor: pointer;
    text-decoration: underline;
    text-underline-offset: 3px;
    transition: var(--transition);
}

.modal-link:hover { color: #ffffff; }

/* ==========================================================================
   Responsive
   ========================================================================== */

@media (max-width: 1080px) {
    .contact-form-layout {
        grid-template-columns: 1fr;
        gap: 36px;
    }

    .contact-aside {
        border-left: none;
        border-top: 1px solid var(--border-glass);
        padding-left: 0;
        padding-top: 32px;
    }

    .contact-card {
        grid-template-columns: 1fr;
        gap: 36px;
    }

    .contact-details {
        border-left: none;
        border-top: 1px solid var(--border-glass);
        padding-left: 0;
        padding-top: 32px;
    }
}

@media (max-width: 980px) {
    .nav-links { display: none; }
    .nav-toggle { display: block; }
    .btn-header-cta { display: none; }
    .cards-3col { grid-template-columns: 1fr; }
    .tab-pane.active {
        grid-template-columns: 1fr;
        gap: 28px;
        align-items: start;
    }
    .emap-card { padding: 28px 22px; }
    .talk-hero {
        grid-template-columns: 1fr;
        gap: 28px;
    }
}

@media (max-width: 768px) {
    .container { padding: 0 20px; }
    .section { padding: 64px 0; }
    .section-title { white-space: normal; }
    .mission-card { padding: 34px 26px; }
    .contact-card { padding: 34px 26px; }
    .info-card { padding: 30px 24px; }
    .form-card { padding: 30px 24px; }
    .contact-page { padding: 40px 0 64px; }
    .talk-hero { padding: 32px 26px; }
    .success-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 24px;
    }
    .field-row { grid-template-columns: 1fr; gap: 0; }
    .modal { padding: 26px 22px; }
}

@media (max-width: 540px) {
    .services-grid,
    .talks-grid { grid-template-columns: 1fr; }
    .hero-actions .btn-mono-primary,
    .hero-actions .btn-mono-secondary { flex: 1 1 100%; justify-content: center; }
    .form-actions .btn-mono-primary,
    .form-actions .btn-mono-secondary { flex: 1 1 100%; justify-content: center; }
}