/* Veltron AI Lab — scoped styles (loads after Assets/css/styles.css) */

.ai-lab-body {
    background-color: var(--bg-black);
    color: var(--text-white);
}

.ai-lab-visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    margin: -1px;
    padding: 0;
    overflow: hidden;
    clip: rect(0 0 0 0);
    white-space: nowrap;
    border: 0;
}

/* ---------- Hero ---------- */

.ai-lab-hero {
    position: relative;
    padding: 160px 24px 110px;
    text-align: center;
    background:
        radial-gradient(ellipse 70% 45% at 50% 0%, rgba(212, 0, 0, 0.08), transparent 65%),
        var(--bg-black);
    border-bottom: 1px solid var(--border-color);
}

.ai-lab-hero-inner {
    max-width: 860px;
    margin: 0 auto;
}

.ai-lab-eyebrow {
    display: inline-block;
    font-size: 0.72rem;
    letter-spacing: 0.22em;
    text-transform: uppercase;
    color: var(--primary-red);
    border: 1px solid rgba(var(--primary-red-rgb), 0.4);
    padding: 6px 14px;
    border-radius: 999px;
    margin-bottom: 28px;
}

.ai-lab-hero h1 {
    font-size: clamp(2.4rem, 6vw, 4.2rem);
    font-weight: 700;
    letter-spacing: -0.02em;
    margin-bottom: 22px;
}

.ai-lab-hero-sub {
    max-width: 640px;
    margin: 0 auto 36px;
    color: var(--text-gray);
    font-size: 1.05rem;
    line-height: 1.7;
}

.ai-lab-cta-row {
    display: flex;
    gap: 14px;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 26px;
}

.ai-lab-hero-note {
    font-size: 0.8rem;
    color: #7a7a7a;
}

/* ---------- Buttons ---------- */

.ai-lab-btn {
    display: inline-block;
    padding: 13px 30px;
    font-size: 0.9rem;
    font-weight: 600;
    letter-spacing: 0.04em;
    text-decoration: none;
    border-radius: 4px;
    border: 1px solid transparent;
    cursor: pointer;
    transition: var(--transition);
    font-family: inherit;
}

.ai-lab-btn-primary {
    background: var(--primary-red);
    color: #fff;
    border-color: var(--primary-red);
}

.ai-lab-btn-primary:hover:not(:disabled) {
    background: #b50000;
    border-color: #b50000;
}

.ai-lab-btn-primary:disabled {
    opacity: 0.45;
    cursor: not-allowed;
}

.ai-lab-btn-ghost {
    background: transparent;
    color: var(--text-white);
    border-color: #3a3a3a;
}

.ai-lab-btn-ghost:hover:not(:disabled) {
    border-color: #5a5a5a;
    background: rgba(255, 255, 255, 0.04);
}

.ai-lab-btn-ghost:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

.ai-lab-btn-sm {
    padding: 9px 20px;
    font-size: 0.82rem;
}

/* ---------- Sections ---------- */

.ai-lab-section {
    max-width: 1080px;
    margin: 0 auto;
    padding: 90px 24px 30px;
}

.ai-lab-section-head {
    max-width: 700px;
    margin-bottom: 44px;
}

.ai-lab-section-head h2 {
    font-size: clamp(1.6rem, 3.4vw, 2.3rem);
    font-weight: 700;
    letter-spacing: -0.01em;
    margin-bottom: 14px;
}

.ai-lab-section-head p {
    color: var(--text-gray);
    line-height: 1.7;
}

/* ---------- Chat shell ---------- */

.ai-lab-chat-shell {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.ai-lab-chat-status {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 18px;
    font-size: 0.78rem;
    color: var(--text-gray);
    border-bottom: 1px solid var(--border-color);
    background: rgba(255, 255, 255, 0.02);
    min-height: 44px;
}

.ai-lab-status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: #888;
    flex-shrink: 0;
}

.ai-lab-status-dot.is-ok { background: #2fbf71; }
.ai-lab-status-dot.is-error { background: var(--primary-red); }
.ai-lab-status-dot.is-loading {
    background: #888;
    animation: ai-lab-pulse 1.1s ease-in-out infinite;
}

@keyframes ai-lab-pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.3; }
}

.ai-lab-chat-log {
    height: 420px;
    overflow-y: auto;
    padding: 26px 22px;
    display: flex;
    flex-direction: column;
    gap: 18px;
    scroll-behavior: smooth;
}

.ai-lab-msg {
    max-width: 78%;
    padding: 13px 17px;
    border-radius: 8px;
    font-size: 0.92rem;
    line-height: 1.6;
    white-space: pre-wrap;
    word-break: break-word;
}

.ai-lab-msg-user {
    align-self: flex-end;
    background: rgba(var(--primary-red-rgb), 0.16);
    border: 1px solid rgba(var(--primary-red-rgb), 0.35);
    border-bottom-right-radius: 2px;
}

.ai-lab-msg-assistant {
    align-self: flex-start;
    background: rgba(255, 255, 255, 0.045);
    border: 1px solid #2c2c2c;
    border-bottom-left-radius: 2px;
}

.ai-lab-msg-error {
    align-self: stretch;
    max-width: 100%;
    background: rgba(var(--primary-red-rgb), 0.1);
    border: 1px solid rgba(var(--primary-red-rgb), 0.4);
    color: #ff8f8f;
    font-size: 0.85rem;
}

.ai-lab-msg-meta {
    display: block;
    margin-top: 8px;
    font-size: 0.68rem;
    color: #6d6d6d;
    letter-spacing: 0.03em;
}

.ai-lab-typing {
    display: inline-flex;
    gap: 5px;
    padding: 4px 2px;
}

.ai-lab-typing span {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: #9a9a9a;
    animation: ai-lab-blink 1.2s ease-in-out infinite;
}

.ai-lab-typing span:nth-child(2) { animation-delay: 0.18s; }
.ai-lab-typing span:nth-child(3) { animation-delay: 0.36s; }

@keyframes ai-lab-blink {
    0%, 100% { opacity: 0.25; transform: translateY(0); }
    50% { opacity: 1; transform: translateY(-3px); }
}

/* ---------- Samples ---------- */

.ai-lab-chat-samples {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-wrap: wrap;
    padding: 14px 22px;
    border-top: 1px solid var(--border-color);
}

.ai-lab-samples-label {
    font-size: 0.72rem;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: #7a7a7a;
}

.ai-lab-sample-btn {
    background: transparent;
    border: 1px solid #333;
    color: var(--text-gray);
    font-size: 0.78rem;
    padding: 6px 13px;
    border-radius: 999px;
    cursor: pointer;
    transition: var(--transition);
    font-family: inherit;
}

.ai-lab-sample-btn:hover:not(:disabled) {
    border-color: var(--primary-red);
    color: #fff;
}

.ai-lab-sample-btn:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

/* ---------- Form ---------- */

.ai-lab-chat-form {
    border-top: 1px solid var(--border-color);
    padding: 16px 22px 18px;
    background: rgba(0, 0, 0, 0.25);
}

.ai-lab-chat-input {
    width: 100%;
    resize: none;
    background: #0d0d0d;
    border: 1px solid #2e2e2e;
    border-radius: 6px;
    color: var(--text-white);
    padding: 13px 15px;
    font-size: 0.92rem;
    font-family: inherit;
    line-height: 1.5;
    transition: var(--transition);
}

.ai-lab-chat-input:focus {
    outline: none;
    border-color: var(--primary-red);
}

.ai-lab-chat-input::placeholder {
    color: #5c5c5c;
}

.ai-lab-chat-form-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-top: 12px;
    gap: 12px;
    flex-wrap: wrap;
}

.ai-lab-char-count {
    font-size: 0.72rem;
    color: #6d6d6d;
}

.ai-lab-chat-actions {
    display: flex;
    gap: 10px;
}

.ai-lab-chat-footer {
    display: flex;
    justify-content: space-between;
    gap: 14px;
    flex-wrap: wrap;
    padding: 11px 22px;
    border-top: 1px solid var(--border-color);
    font-size: 0.72rem;
    color: #6d6d6d;
    background: rgba(255, 255, 255, 0.015);
}

/* ---------- Methodology ---------- */

.ai-lab-method-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 16px;
    margin-bottom: 44px;
}

.ai-lab-method-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 26px 24px;
}

.ai-lab-method-card h3 {
    font-size: 1rem;
    margin-bottom: 12px;
    color: #fff;
}

.ai-lab-method-card p {
    font-size: 0.86rem;
    color: var(--text-gray);
    line-height: 1.65;
}

.ai-lab-method-card em {
    color: #d5d5d5;
}

/* ---------- Code viewer ---------- */

.ai-lab-code-block {
    background: #0b0b0b;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    overflow: hidden;
}

.ai-lab-code-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 12px;
    padding: 12px 18px;
    border-bottom: 1px solid var(--border-color);
    background: rgba(255, 255, 255, 0.03);
    font-size: 0.78rem;
    color: var(--text-gray);
}

.ai-lab-code-version {
    color: var(--primary-red);
    font-weight: 600;
    letter-spacing: 0.04em;
}

.ai-lab-code-block pre {
    margin: 0;
    padding: 20px 22px;
    overflow-x: auto;
    max-height: 520px;
    overflow-y: auto;
}

.ai-lab-code-block code {
    font-family: 'Cascadia Code', 'JetBrains Mono', Consolas, monospace;
    font-size: 0.78rem;
    line-height: 1.65;
    color: #c9c9c9;
    white-space: pre;
}

/* ---------- Experiments ---------- */

.ai-lab-eval-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 16px;
}

.ai-lab-eval-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 28px 26px;
}

.ai-lab-eval-card h3 {
    font-size: 1.02rem;
    margin-bottom: 12px;
}

.ai-lab-eval-card p {
    font-size: 0.86rem;
    color: var(--text-gray);
    line-height: 1.65;
    margin-bottom: 18px;
}

.ai-lab-eval-card code {
    background: rgba(255, 255, 255, 0.06);
    padding: 2px 7px;
    border-radius: 4px;
    font-size: 0.8em;
}

.ai-lab-eval-status {
    display: inline-block;
    font-size: 0.74rem;
    letter-spacing: 0.05em;
    padding: 5px 12px;
    border-radius: 999px;
    border: 1px solid #3a3a3a;
    color: var(--text-gray);
}

.ai-lab-eval-status.is-pass { border-color: rgba(47, 191, 113, 0.5); color: #2fbf71; }
.ai-lab-eval-status.is-fail { border-color: rgba(var(--primary-red-rgb), 0.5); color: #ff6b6b; }

/* ---------- Technical table ---------- */

.ai-lab-tech-table {
    border: 1px solid var(--border-color);
    border-radius: 8px;
    overflow: hidden;
}

.ai-lab-tech-row {
    display: grid;
    grid-template-columns: 220px 1fr;
    gap: 18px;
    padding: 17px 22px;
    border-bottom: 1px solid var(--border-color);
    font-size: 0.88rem;
}

.ai-lab-tech-row:last-child { border-bottom: none; }

.ai-lab-tech-row:nth-child(odd) { background: rgba(255, 255, 255, 0.018); }

.ai-lab-tech-name {
    color: #8a8a8a;
    font-weight: 600;
    letter-spacing: 0.03em;
}

.ai-lab-tech-value {
    color: #d8d8d8;
    line-height: 1.6;
}

.ai-lab-tech-value a {
    color: var(--primary-red);
    text-decoration: none;
}

.ai-lab-tech-value a:hover { text-decoration: underline; }

/* ---------- Footer override ---------- */

.ai-lab-body .main-footer {
    margin-top: 90px;
}

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

@media (max-width: 720px) {
    .ai-lab-hero { padding: 130px 18px 80px; }
    .ai-lab-section { padding: 64px 18px 20px; }
    .ai-lab-chat-log { height: 340px; padding: 20px 14px; }
    .ai-lab-msg { max-width: 92%; font-size: 0.88rem; }
    .ai-lab-chat-samples { padding: 12px 14px; }
    .ai-lab-chat-form { padding: 14px; }
    .ai-lab-chat-footer { padding: 10px 14px; flex-direction: column; gap: 4px; }
    .ai-lab-tech-row { grid-template-columns: 1fr; gap: 6px; }
    .ai-lab-chat-form-row { justify-content: flex-end; }
}