/* ============================================================
    mechanika.css — mechaniko temos sluoksnis virš style.css
    Diagnostikos pultas (signature), būsenų LED, daugiapuslapė
    navigacija, vidiniai puslapių hero, kontaktų forma.
    Spalvų bazė ir šriftai paveldimi iš style.css.
   ============================================================ */

:root {
    --signal: #3e9b4f;          /* "praėjo" / live diagnostikos žalia */
    --signal-soft: #e7f1e8;
    --warn: #c2841c;            /* gintaras — įspėjimas */
    --warn-soft: #f6efe0;
    /* --alert paveldimas iš style.css (#a92626) */
    --reticle: rgba(17, 17, 16, 0.28);
}

/* ── reduced motion ── */
@media (prefers-reduced-motion: reduce) {
    * { animation: none !important; transition: none !important; }
}

/* ════════════════════════════════════════
    NAVIGACIJA — daugiapuslapė
   ════════════════════════════════════════ */
   nav .container {
    gap: 2rem;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 1.75rem;
    margin-left: auto;
    margin-right: 1.75rem;
}

.nav-link {
    font-family: var(--font-mono);
    font-size: 13px;
    font-weight: 400;
    color: var(--gray-600);
    text-decoration: none;
    letter-spacing: 0.01em;
    padding: 4px 0;
    position: relative;
    transition: color 0.15s;
}

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

.nav-link.is-active { color: var(--black); }

.nav-link.is-active::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: -2px;
    width: 100%;
    height: 2px;
    background: var(--signal);
}

.nav-cta {
    font-family: var(--font-mono);
    font-size: 11px;
    font-weight: 500;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    padding: 9px 16px;
    background: var(--black);
    color: var(--white);
    border-radius: var(--radius);
    text-decoration: none;
    white-space: nowrap;
    transition: opacity 0.15s;
}

.nav-cta:hover { opacity: 0.82; }

.nav-toggle {
    display: none;
    background: none;
    border: none;
    width: 40px;
    height: 36px;
    cursor: pointer;
    padding: 0;
    align-items: center;
    justify-content: center;
}

/* Burger ikona — vidurinis brūkšnelis trumpesnis, kairėje */
.nav-toggle span,
.nav-toggle span::before,
.nav-toggle span::after {
    content: '';
    display: block;
    height: 1.5px;
    background: var(--black);
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1),
                width 0.3s cubic-bezier(0.4, 0, 0.2, 1),
                opacity 0.2s ease,
                top 0.3s cubic-bezier(0.4, 0, 0.2, 1),
                background 0.3s ease;
}
.nav-toggle span {
    width: 13px;              /* vidurinis — trumpesnis */
    position: relative;
    margin-right: 7px;        /* prilygiuoja visą ikoną, vidurinis lieka kairėje */
}
.nav-toggle span::before,
.nav-toggle span::after {
    width: 20px;              /* viršutinis ir apatinis — pilni */
    position: absolute;
    left: 0;
}
.nav-toggle span::before { top: -6px; }
.nav-toggle span::after  { top: 6px; }

/* Atidaryta: brūkšneliai → X */
.nav-toggle[aria-expanded="true"] span { background: transparent; }
.nav-toggle[aria-expanded="true"] span::before {
    top: 0;
    transform: rotate(45deg);
    background: var(--white);
}
.nav-toggle[aria-expanded="true"] span::after {
    top: 0;
    transform: rotate(-45deg);
    background: var(--white);
}

@media (max-width: 820px) {
    .nav-toggle { display: flex; }

    /* Pilno ekrano tamsus overlay */
    .nav-menu {
        position: fixed;
        inset: 0;
        z-index: 101;
        display: flex;
        flex-direction: column;
        align-items: center;
        justify-content: center;
        gap: 0.5rem;
        margin: 0;
        background: var(--black);
        opacity: 0;
        visibility: hidden;
        transition: opacity 0.35s ease, visibility 0.35s ease;
    }
    .nav-menu.is-open { opacity: 1; visibility: visible; }

    .nav-link {
        font-family: 'Alkatra', serif;
        font-size: clamp(1.8rem, 7vw, 2.6rem);
        font-weight: 700;
        text-transform: uppercase;
        letter-spacing: 0.02em;
        color: var(--white);
        padding: 0.45rem 1rem;
        opacity: 0;
        transform: translateY(14px);
        transition: opacity 0.4s ease, transform 0.4s ease, color 0.2s ease;
    }
    .nav-menu.is-open .nav-link { opacity: 1; transform: translateY(0); }
    .nav-menu.is-open .nav-link:nth-child(1) { transition-delay: 0.08s; }
    .nav-menu.is-open .nav-link:nth-child(2) { transition-delay: 0.14s; }
    .nav-menu.is-open .nav-link:nth-child(3) { transition-delay: 0.20s; }
    .nav-menu.is-open .nav-link:nth-child(4) { transition-delay: 0.26s; }

    .nav-link:hover,
    .nav-link.is-active { color: var(--signal); }
    .nav-link.is-active::after { display: none; }

    /* CTA su skirtuku virš jo (kaip Motorcity „Registruotis") */
    .nav-cta {
        margin-top: 2.2rem;
        padding: 0.8rem 2.2rem;
        background: var(--signal);
        color: var(--white);
        position: relative;
        opacity: 0;
        transform: translateY(14px);
        transition: opacity 0.4s ease 0.34s, transform 0.4s ease 0.34s;
    }
    .nav-menu.is-open .nav-cta { opacity: 1; transform: translateY(0); }
    .nav-cta::before {
        content: '';
        position: absolute;
        top: -1.2rem;
        left: 50%;
        transform: translateX(-50%);
        width: 36px;
        height: 1px;
        background: rgba(247, 246, 242, 0.25);
    }

    /* Atidarius meniu — mygtukas fiksuotas viršuje dešinėje, VIRŠ overlay */
    body.menu-open .nav-toggle {
        position: fixed;
        top: 1.1rem;
        right: 1.25rem;
        z-index: 103;
    }

    /* Atidarius meniu — nav juosta virš overlay, logo šviesus */
    body.menu-open nav {
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        z-index: 102;
        background: transparent;
        border-bottom-color: transparent;
    }

    body.menu-open .nav-logo,
    body.menu-open .nav-logo strong { color: var(--white); }

    /* Scroll lock */
    body.menu-open { overflow: hidden; }
}

@media (prefers-reduced-motion: reduce) {
    .nav-menu,
    .nav-link,
    .nav-cta,
    .nav-toggle span,
    .nav-toggle span::before,
    .nav-toggle span::after {
        transition: none !important;
    }
}

/* ════════════════════════════════════════
    DIAGNOSTIKOS PULTAS — signature elementas
   ════════════════════════════════════════ */
.hero-grid {
    display: grid;
    grid-template-columns: 1fr 380px;
    gap: 3.5rem;
    align-items: center;
}

.diag {
    background: var(--black);
    border-radius: 6px;
    padding: 1.4rem 1.5rem 1.3rem;
    position: relative;
    color: var(--white);
    font-family: var(--font-mono);
    box-shadow: 0 18px 40px rgba(17,17,16,0.18);
}

/* reticle kampai */
.diag-corner {
    position: absolute;
    width: 12px;
    height: 12px;
    border: 1.5px solid var(--signal);
    opacity: 0.65;
}
.diag-corner.tl { top: 8px; left: 8px; border-right: none; border-bottom: none; }
.diag-corner.tr { top: 8px; right: 8px; border-left: none; border-bottom: none; }
.diag-corner.bl { bottom: 8px; left: 8px; border-right: none; border-top: none; }
.diag-corner.br { bottom: 8px; right: 8px; border-left: none; border-top: none; }

.diag-head {
    display: flex;
    align-items: center;
    gap: 0.55rem;
    font-size: 10px;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--gray-300);
    margin-bottom: 1rem;
}

.diag-live {
    width: 7px; height: 7px;
    border-radius: 50%;
    background: var(--signal);
    box-shadow: 0 0 0 0 rgba(62,155,79,0.6);
    animation: diagPulse 2s infinite;
}
@keyframes diagPulse {
    0%   { box-shadow: 0 0 0 0 rgba(62,155,79,0.55); }
    70%  { box-shadow: 0 0 0 7px rgba(62,155,79,0); }
    100% { box-shadow: 0 0 0 0 rgba(62,155,79,0); }
}
.diag-time { margin-left: auto; color: var(--gray-400); letter-spacing: 0.06em; }

.diag-url {
    display: flex;
    align-items: center;
    gap: 0.45rem;
    font-size: 13px;
    padding: 0.6rem 0.7rem;
    background: rgba(255,255,255,0.04);
    border: 1px solid rgba(255,255,255,0.08);
    border-radius: var(--radius);
    margin-bottom: 1.1rem;
}
.diag-prompt { color: var(--signal); font-weight: 500; }
.diag-domain { color: var(--white); }
.diag-caret {
    color: var(--signal);
    animation: diagBlink 1.1s step-end infinite;
}
@keyframes diagBlink { 50% { opacity: 0; } }

.diag-rows { display: flex; flex-direction: column; gap: 0.55rem; }

.diag-row {
    display: grid;
    grid-template-columns: 78px 1fr auto auto;
    align-items: center;
    gap: 0.7rem;
    font-size: 12px;
}
.diag-label { color: var(--gray-300); letter-spacing: 0.02em; }

.diag-bar {
    height: 4px;
    border-radius: 3px;
    background: rgba(255,255,255,0.09);
    overflow: hidden;
}
.diag-bar i {
    display: block;
    height: 100%;
    width: var(--w, 0%);
    border-radius: 3px;
    background: var(--signal);
    transform-origin: left;
    animation: diagFill 1.1s cubic-bezier(.4,0,.2,1) both;
}
.diag-row[data-status="warn"] .diag-bar i { background: var(--warn); }
.diag-row[data-status="fail"] .diag-bar i { background: var(--alert); }
@keyframes diagFill { from { transform: scaleX(0); } to { transform: scaleX(1); } }

.diag-val {
    font-weight: 500;
    color: var(--white);
    font-variant-numeric: tabular-nums;
    min-width: 30px;
    text-align: right;
}
.diag-led {
    width: 7px; height: 7px;
    border-radius: 50%;
    background: var(--signal);
    box-shadow: 0 0 6px rgba(62,155,79,0.7);
}
.diag-row[data-status="warn"] .diag-led { background: var(--warn); box-shadow: 0 0 6px rgba(194,132,28,0.7); }
.diag-row[data-status="fail"] .diag-led { background: var(--alert); box-shadow: 0 0 6px rgba(169,38,38,0.7); }

.diag-foot {
    margin-top: 1.2rem;
    padding-top: 0.9rem;
    border-top: 1px solid rgba(255,255,255,0.08);
    font-size: 11px;
    letter-spacing: 0.04em;
    color: var(--gray-300);
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.diag-foot a { color: var(--white); text-decoration: none; border-bottom: 1px solid rgba(255,255,255,0.25); padding-bottom: 1px; }
.diag-foot a:hover { border-color: var(--signal); }

@media (max-width: 900px) {
    .hero-grid { grid-template-columns: 1fr; gap: 2.5rem; }
    .diag { max-width: 420px; }
}

/* ════════════════════════════════════════
   PATIKROS ATASKAITA — perkurta stats juosta
   ════════════════════════════════════════ */
.report {
    border: 1px solid var(--border);
    border-radius: 6px;
    overflow: hidden;
    background: var(--white);
}
.report-head {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    padding: 0.85rem 1.25rem;
    border-bottom: 1px solid var(--border);
    background: var(--gray-100);
    font-family: var(--font-mono);
    font-size: 11px;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--gray-400);
}
.report-head .diag-live { background: var(--signal); }
.report-stamp {
    margin-left: auto;
    font-size: 10px;
    letter-spacing: 0.12em;
    color: var(--signal);
    border: 1px solid var(--signal);
    border-radius: 2px;
    padding: 2px 8px;
}
.report-rows {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
}
.report-cell {
    padding: 1.5rem 1.25rem;
    border-right: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
}
.report-cell:last-child { border-right: none; }
.report-cell-top {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}
.report-led {
    width: 7px; height: 7px; border-radius: 50%;
    background: var(--signal);
    box-shadow: 0 0 6px rgba(62,155,79,0.6);
    flex-shrink: 0;
}
.report-value {
    font-family: var(--font-display);
    font-size: clamp(1.3rem, 4vw, 2rem);
    font-weight: 700;
    color: var(--black);
    letter-spacing: -0.02em;
    line-height: 1;
}
.report-label {
    font-family: var(--font-mono);
    font-size: 11px;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    color: var(--gray-400);
}
.report-note {
    font-family: var(--font-mono);
    font-size: 11px;
    color: var(--gray-400);
    padding: 0.75rem 1.25rem;
    border-top: 1px solid var(--border);
    background: var(--gray-100);
}
@media (max-width: 700px) {
    .report-rows { grid-template-columns: 1fr 1fr; }
    .report-cell:nth-child(2) { border-right: none; }
    .report-cell:nth-child(1), .report-cell:nth-child(2) { border-bottom: 1px solid var(--border); }
}

/* pain-point LED variantai */
.pain-point-stat.is-warn { color: var(--warn); }
.pain-point-stat.is-fail { color: var(--alert); }

/* ════════════════════════════════════════
   VIDINIŲ PUSLAPIŲ HERO
   ════════════════════════════════════════ */
.page-hero {
    padding: 4.5rem 0 3.5rem;
    border-bottom: 1px solid var(--border);
}

.page-hero h1 {
    font-family: var(--font-display);
    font-size: clamp(2rem, 5vw, 3.6rem);
    font-weight: 700;
    line-height: 1.12;
    letter-spacing: -0.02em;
    color: var(--black);
    max-width: 640px;
    margin-bottom: 1.2rem;
}
.page-hero-sub {
    font-family: var(--font-mono);
    font-size: 16px;
    color: var(--gray-600);
    max-width: 540px;
    line-height: 1.7;
    margin-bottom: 2rem;
}

/* ════════════════════════════════════════
   PASLAUGŲ "TEASER" kortelės (titulinis)
   ════════════════════════════════════════ */
.svc-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1px;
    background: var(--border);
    border: 1px solid var(--border);
    border-radius: 6px;
    overflow: hidden;
}
.svc {
    background: var(--white);
    padding: 2rem 1.75rem;
    display: flex;
    flex-direction: column;
    text-decoration: none;
    transition: background 0.15s;
}
.svc:hover { background: var(--gray-100); }
.svc-tag {
    font-family: var(--font-mono);
    font-size: 10px;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--signal);
    margin-bottom: 0.9rem;
}
.svc-name {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--black);
    letter-spacing: -0.01em;
    margin-bottom: 0.6rem;
}
.svc-desc {
    font-family: var(--font-mono);
    font-size: 13px;
    color: var(--gray-600);
    line-height: 1.6;
    flex: 1;
    margin-bottom: 1.4rem;
}
.svc-arrow {
    font-family: var(--font-mono);
    font-size: 11px;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: var(--black);
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
}
.svc:hover .svc-arrow { color: var(--signal); }
@media (max-width: 640px) {
    .svc-grid { grid-template-columns: 1fr; }
}

/* ════════════════════════════════════════
   "KĄ TIKRINAME" — patikros sąrašas (auditas)
   ════════════════════════════════════════ */
.checklist {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1px;
    background: var(--border);
    border: 1px solid var(--border);
    border-radius: 6px;
    overflow: hidden;
}
.check-group { background: var(--white); padding: 1.5rem; }
.check-group-head {
    display: flex;
    align-items: center;
    gap: 0.55rem;
    margin-bottom: 1rem;
}
.check-group-head .report-led { box-shadow: 0 0 6px rgba(62,155,79,0.5); }
.check-group-title {
    font-family: var(--font-display);
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--black);
    letter-spacing: -0.01em;
}
.check-item {
    font-family: var(--font-mono);
    font-size: 12.5px;
    color: var(--gray-600);
    line-height: 1.5;
    padding: 0.4rem 0 0.4rem 1.3rem;
    position: relative;
}
.check-item::before {
    content: '✓';
    position: absolute;
    left: 0;
    top: 0.4rem;
    color: var(--signal);
    font-size: 11px;
    font-weight: 700;
}
@media (max-width: 640px) {
    .checklist { grid-template-columns: 1fr; }
}

/* ════════════════════════════════════════
   KONTAKTŲ FORMA (mailto — be backend)
   ════════════════════════════════════════ */
.contact-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1px;
    background: var(--border);
    border: 1px solid var(--border);
    border-radius: 6px;
    overflow: hidden;
}
.contact-pane { background: var(--white); padding: 2rem 1.85rem; }
.contact-pane.dark { background: var(--black); color: var(--white); }
.contact-pane-title {
    font-family: var(--font-display);
    font-size: 1.3rem;
    font-weight: 700;
    letter-spacing: -0.01em;
    margin-bottom: 1.25rem;
}
.contact-pane.dark .contact-pane-title { color: var(--white); }

.form-field { margin-bottom: 1rem; }
.form-field label {
    display: block;
    font-family: var(--font-mono);
    font-size: 11px;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: var(--gray-400);
    margin-bottom: 0.4rem;
}
.form-field input,
.form-field textarea {
    width: 100%;
    font-family: var(--font-mono);
    font-size: 14px;
    color: var(--black);
    background: var(--white);
    border: 1px solid var(--border-strong);
    border-radius: var(--radius);
    padding: 0.7rem 0.85rem;
    transition: border-color 0.15s;
}
.form-field input:focus,
.form-field textarea:focus {
    outline: none;
    border-color: var(--signal);
}
.form-field textarea { resize: vertical; min-height: 110px; line-height: 1.5; }
.form-submit {
    font-family: var(--font-mono);
    font-size: 12px;
    font-weight: 500;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    padding: 12px 24px;
    background: var(--black);
    color: var(--white);
    border: none;
    border-radius: var(--radius);
    cursor: pointer;
    transition: opacity 0.15s;
}
.form-submit:hover { opacity: 0.85; }
.form-hint {
    font-family: var(--font-mono);
    font-size: 11px;
    color: var(--gray-400);
    margin-top: 0.75rem;
    line-height: 1.5;
}

.form-checkbox {
    display: block;
    font-family: var(--font-mono);
    font-size: 11px;
    letter-spacing: 0.06em;
    color: var(--gray-400);
    margin-bottom: 0.4rem;
}
.form-checkbox input {
    width: 12px;
    height: 12px;
    border: 1px solid var(--border-strong);
    border-radius: 3px;
    background: var(--white);
    cursor: pointer;
    position: relative;
}

.form-checkbox a { 
    color: var(--gray-600);
    text-decoration: none;
    border-bottom: 1px solid var(--gray-600);
    padding-bottom: 1px; 
}

.form-checkbox a:hover { border-color: var(--signal); }

.form-checkbox input:checked { accent-color: var(--signal); }

.contact-info-row {
    display: flex;
    flex-direction: column;
    gap: 0.9rem;
    margin-bottom: 1.75rem;
}
.contact-info-item {
    font-family: var(--font-mono);
    font-size: 13px;
    color: var(--gray-300);
}
.contact-info-item span {
    display: block;
    font-size: 10px;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--gray-600);
    margin-bottom: 0.25rem;
}
.contact-info-item a { color: var(--white); text-decoration: none; border-bottom: 1px solid rgba(255,255,255,0.25); padding-bottom: 1px; }
.contact-info-item a:hover { border-color: var(--signal); }

.req-block {
    font-family: var(--font-mono);
    font-size: 12px;
    color: var(--gray-300);
    line-height: 1.7;
    padding-top: 1.5rem;
    border-top: 1px solid rgba(255,255,255,0.1);
}
.req-block strong { color: var(--gray-200); font-weight: 500; }

@media (max-width: 700px) {
    .contact-layout { grid-template-columns: 1fr; }
}

/* ── bendros pagalbinės ── */
.section-lead {
    font-family: var(--font-mono);
    font-size: 15px;
    color: var(--gray-600);
    line-height: 1.7;
    max-width: 620px;
    margin-bottom: 2.5rem;
}
.cross-link {
    font-family: var(--font-mono);
    font-size: 13px;
    color: var(--gray-600);
    margin-top: 1.5rem;
}
.cross-link a {
    color: var(--black);
    text-decoration: none;
    border-bottom: 1px solid var(--signal);
    padding-bottom: 1px;
}
.cross-link a:hover { color: var(--signal); }

/* Honeypot: paslėptas per poziciją, NE display:none (botai atpažįsta display:none) */
.hp-field {
    position: absolute;
    left: -9999px;
    width: 1px; height: 1px;
    overflow: hidden;
}

.form-msg {
    font-family: var(--font-mono);
    font-size: 13px;
    padding: 0.75rem 1rem;
    border-radius: 4px;
    margin-bottom: 0.75rem;
}
.form-msg-ok  { background: var(--signal-soft); color: var(--signal); }
.form-msg-err { background: #fdf1f1; color: var(--alert); }

.hidden { display: none; }

.legal { max-width: 760px; }
        .legal-updated {
            font-family: var(--font-mono);
            font-size: 12px;
            letter-spacing: 0.04em;
            color: var(--gray-400);
            margin-top: 0.5rem;
        }
        .legal h2 {
            font-family: var(--font-display);
            font-size: 1.5rem;
            font-weight: 700;
            letter-spacing: -0.01em;
            color: var(--black);
            margin: 2.8rem 0 0.9rem;
        }
        .legal h2:first-child { margin-top: 0; }
        .legal h3 {
            font-family: var(--font-mono);
            font-size: 14px;
            font-weight: 500;
            color: var(--black);
            margin: 1.6rem 0 0.5rem;
        }
        .legal p,
        .legal li {
            font-family: var(--font-mono);
            font-size: 15px;
            line-height: 1.75;
            color: var(--gray-600);
        }
        .legal p { margin-bottom: 1rem; }
        .legal ul { margin: 0 0 1.1rem 1.1rem; }
        .legal li { margin-bottom: 0.5rem; }
        .legal a {
            color: var(--black);
            text-decoration: none;
            border-bottom: 1px solid var(--signal);
            padding-bottom: 1px;
        }
        .legal a:hover { color: var(--signal); }
        .legal strong { color: var(--black); font-weight: 500; }
        .legal-fill {
            border-radius: 2px;
            padding: 1px 4px;
            color: var(--accent);
            font-weight: 500;
        }