/* ── Landing Page ─────────────────────────────────────────── */

.landing {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 2rem;
}

.landing h2 {
    font-size: 1.8rem;
    text-align: center;
    margin-bottom: 0.6rem;
    letter-spacing: -0.5px;
}

.btn-lg {
    padding: 0.8rem 2rem;
    font-size: 1rem;
    border-radius: 8px;
}

/* ── Hero ─────────────────────────────────────────────────── */

.hero {
    text-align: center;
    padding: 4rem 0 3rem;
}

.hero-demo {
    display: flex;
    justify-content: center;
    align-items: flex-start;
    gap: 2.5rem;
    margin-top: 2.5rem;
}

.hero-text h1 {
    font-size: 2.6rem;
    line-height: 1.2;
    letter-spacing: -1px;
    margin-bottom: 1.2rem;
}

.hero-text h1 em {
    font-style: normal;
    color: var(--accent);
}

.hero-sub {
    font-size: 1.1rem;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 2rem;
    max-width: 560px;
    margin-left: auto;
    margin-right: auto;
}

.hero-actions {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
    justify-content: center;
}

/* Hero board column */
.hero-board-col {
    display: flex;
    justify-content: center;
}

/* Hero side panel — alternating views */
.hero-side {
    position: relative;
    width: 380px;
    flex-shrink: 0;
    min-height: 340px; /* match board height so both views align top */
}

.hero-view {
    transition: opacity 1.2s ease, transform 1.2s ease;
    opacity: 1;
    transform: translateY(0);
    width: 100%;
}

.hero-view-hidden {
    opacity: 0;
    transform: translateY(8px);
    pointer-events: none;
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
}

/* "Other tools" — plain eval display */
.hero-what {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.6rem;
    padding: 1.5rem;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
}

.hero-what-move {
    font-size: 1.4rem;
    font-weight: 800;
    letter-spacing: -0.5px;
}

.hero-what-badge {
    display: inline-block;
    padding: 0.2rem 0.7rem;
    border-radius: 4px;
    font-size: 0.8rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    background: rgba(80, 180, 240, 0.18);
    color: #50b4f0;
}

.hero-what-eval {
    font-size: 2rem;
    font-weight: 900;
    font-family: monospace;
    color: var(--text-muted);
}

.hero-what-shrug {
    font-size: 0.85rem;
    color: var(--text-muted);
    font-style: italic;
    margin: 0.5rem 0 0;
    text-align: center;
}

.hero-label {
    text-align: center;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    color: var(--text-muted);
    margin-bottom: 0.6rem;
}

.hero-label-accent {
    color: var(--accent);
}

/* Hero conversation panel mockup */
.hero-conv-panel {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 0.75rem;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}
.hero-conv-msg {
    max-width: 88%;
    padding: 0.5rem 0.7rem;
    border-radius: 8px;
    font-size: 0.85rem;
    line-height: 1.5;
}
.hero-conv-coach {
    align-self: flex-start;
    background: var(--bg-surface);
    border: 1px solid var(--border);
}
.hero-conv-user {
    align-self: flex-end;
    background: var(--accent-dim);
    border: 1px solid var(--accent);
    color: var(--text);
}
.hero-conv-input {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.35rem 0.5rem;
    border-top: 1px solid var(--border);
    margin-top: 0.25rem;
    color: var(--text-muted);
    font-size: 0.8rem;
}
.hero-conv-btn {
    background: var(--accent);
    color: var(--bg);
    padding: 0.2rem 0.6rem;
    border-radius: 4px;
    font-size: 0.75rem;
    font-weight: 600;
    margin-left: auto;
}

.hero-board-wrap {
    display: inline-flex;
    justify-content: center;
    gap: 0;
}

.hero-board-wrap .cg-wrap {
    width: 340px;
    height: 340px;
    border-radius: 0 6px 6px 0;
    box-shadow: 0 16px 48px rgba(0, 0, 0, 0.4), 0 0 0 1px rgba(255, 255, 255, 0.05);
}

/* Eval bar — matches board visually. The cg-wrap is 340px but the visible
   board inside is ~336px due to content-box sizing. We match the cg-wrap
   height and let the board's own box-shadow visually align the bottom. */
.eval-bar {
    width: 28px;
    align-self: stretch;
    background: #333;
    border-radius: 6px 0 0 6px;
    position: relative;
    overflow: hidden;
    box-shadow: 0 16px 48px rgba(0, 0, 0, 0.4);
}

.eval-bar-white {
    position: absolute;
    bottom: 0;
    width: 100%;
    background: #e8e8e8;
    transition: height 0.5s ease;
}

.eval-bar-score {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 0.65rem;
    font-weight: 800;
    color: #999;
    writing-mode: vertical-lr;
    text-orientation: mixed;
    z-index: 1;
}

/* Commentary card in the side panel */
.hero-commentary {
    padding: 1rem 1.2rem;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-left: 3px solid var(--accent);
    border-radius: var(--radius);
    font-size: 0.85rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

.hero-commentary strong {
    color: var(--text);
    display: block;
    margin-bottom: 0.3rem;
    font-size: 0.9rem;
}

/* ── How it works ─────────────────────────────────────────── */

.how-it-works {
    padding: 3rem 0;
    border-top: 1px solid var(--border);
}

.steps {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    margin-top: 2rem;
}

.step {
    text-align: center;
    padding: 1.5rem 1rem;
}

.step-num {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--accent);
    color: #111;
    font-weight: 800;
    font-size: 1.1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1rem;
}

.step h3 {
    font-size: 1.05rem;
    margin-bottom: 0.5rem;
}

.step p {
    font-size: 0.92rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* ── Showcase ─────────────────────────────────────────────── */

.showcase {
    padding: 3rem 0;
    border-top: 1px solid var(--border);
}

.showcase-sub {
    text-align: center;
    color: var(--text-secondary);
    font-size: 1.02rem;
    margin-bottom: 2.5rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.showcase-grid {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.showcase-card {
    display: grid;
    grid-template-columns: auto 1fr;
    gap: 1.5rem;
    padding: 1.5rem;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    transition: border-color 0.2s;
}

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

.showcase-board .cg-wrap {
    width: 200px;
    height: 200px;
    border-radius: 4px;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.3);
}

.showcase-content {
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 0.3rem;
}

.showcase-lang {
    font-size: 0.78rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--text-muted);
}

.showcase-badge {
    display: inline-block;
    width: fit-content;
    padding: 0.15rem 0.55rem;
    border-radius: 4px;
    font-size: 0.72rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.badge-blunder { background: rgba(220, 50, 50, 0.18); color: #ff6b6b; }
.badge-mistake { background: rgba(245, 165, 0, 0.18); color: #f5a500; }
.badge-inaccuracy { background: rgba(245, 200, 50, 0.15); color: #e8c840; }
.badge-good { background: rgba(100, 200, 100, 0.15); color: #78d078; }
.badge-brilliant { background: rgba(80, 180, 240, 0.18); color: #50b4f0; }

.showcase-move {
    font-size: 1.1rem;
    font-weight: 700;
    margin-top: 0.2rem;
}

.showcase-eval {
    font-size: 0.78rem;
    font-weight: 600;
    color: var(--text-muted);
    margin-left: 0.4rem;
}

.showcase-game {
    font-size: 0.82rem;
    color: var(--text-muted);
    font-style: italic;
    margin: 0;
}

.showcase-content blockquote {
    margin: 0.4rem 0 0;
    padding: 0;
    border: none;
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.65;
    font-style: italic;
}

/* ── Training & Conversation ─────────────────────────────── */

.training-section {
    padding: 3rem 0;
    border-top: 1px solid var(--border);
}

.training-sub {
    text-align: center;
    color: var(--text-secondary);
    font-size: 1.02rem;
    margin-bottom: 2.5rem;
    max-width: 680px;
    margin-left: auto;
    margin-right: auto;
    line-height: 1.7;
}

.training-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
}

.training-card {
    padding: 1.5rem;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    transition: border-color 0.2s;
}

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

.training-card-conv {
    grid-column: 1 / -1;
}

.training-card-header {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    margin-bottom: 0.6rem;
}

.training-icon {
    font-size: 1.5rem;
    line-height: 1;
}

.training-card h3 {
    font-size: 1.05rem;
    margin: 0;
}

.training-soon {
    font-size: 0.72rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    padding: 0.15rem 0.55rem;
    border-radius: 4px;
    background: rgba(245, 200, 50, 0.15);
    color: #e8c840;
}

.training-card p {
    font-size: 0.92rem;
    color: var(--text-secondary);
    line-height: 1.6;
    margin: 0;
}

.training-conv-demo {
    margin-top: 1rem;
    max-width: 480px;
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
}

.demo-bubble {
    max-width: 88%;
    padding: 0.5rem 0.7rem;
    border-radius: 8px;
    font-size: 0.85rem;
    line-height: 1.5;
}

.demo-coach {
    align-self: flex-start;
    background: var(--bg, #1a1a2e);
    border: 1px solid var(--border);
    color: var(--text-secondary);
}

.demo-user {
    align-self: flex-end;
    background: var(--accent-dim, rgba(124, 192, 46, 0.1));
    border: 1px solid var(--accent, #7cc02e);
    color: var(--text);
}

.demo-input {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    margin-top: 0.3rem;
    padding: 0.35rem 0.6rem;
    background: var(--bg, #1a1a2e);
    border: 1px solid var(--border);
    border-radius: 4px;
    font-size: 0.82rem;
    color: var(--text-muted);
}

.demo-btn {
    margin-left: auto;
    padding: 0.2rem 0.6rem;
    background: var(--accent, #7cc02e);
    color: #111;
    border-radius: 4px;
    font-size: 0.75rem;
    font-weight: 700;
}

/* ── Features ─────────────────────────────────────────────── */

.features {
    padding: 3rem 0;
    border-top: 1px solid var(--border);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
    margin-top: 2rem;
}

.feature {
    padding: 1.5rem;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    transition: border-color 0.2s;
}

.feature:hover {
    border-color: var(--border-light);
}

.feature-icon {
    font-size: 1.8rem;
    margin-bottom: 0.7rem;
    line-height: 1;
}

.feature h3 {
    font-size: 1rem;
    margin-bottom: 0.4rem;
}

.feature p {
    font-size: 0.88rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* ── CTA ──────────────────────────────────────────────────── */

.cta {
    text-align: center;
    padding: 3.5rem 0 4rem;
    border-top: 1px solid var(--border);
}

.cta p {
    color: var(--text-muted);
    margin-bottom: 1.5rem;
}

.cta .btn {
    min-width: 240px;
}

/* ── Responsive ───────────────────────────────────────────── */

@media (max-width: 900px) {
    .hero { padding: 2.5rem 0 2rem; }
    .hero-demo { flex-direction: column; align-items: center; gap: 1.5rem; }
    .hero-board-col { display: flex; justify-content: center; }
    .hero-board-wrap .cg-wrap { width: 280px; height: 280px; }
    .hero-side { margin: 0 auto; min-height: auto; width: 320px; }

    .steps { grid-template-columns: 1fr; gap: 1rem; }
    .features-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 640px) {
    .landing { padding: 0 1rem; }
    .hero-text h1 { font-size: 2rem; }
    .hero-board-wrap .cg-wrap { width: 240px; height: 240px; }

    .showcase-card {
        grid-template-columns: 1fr;
    }
    .showcase-board { display: flex; justify-content: center; }
    .showcase-board .cg-wrap { width: 240px; height: 240px; }

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

/* ── Mobile/desktop visibility switch ──────────────────────── */

.landing-mobile-only { display: none; }
.landing-desktop-only { display: block; }

@media (max-width: 640px) {
    .landing-mobile-only { display: block; }
    .landing-desktop-only { display: none; }
}

/* ── Mobile hero ───────────────────────────────────────────── */

.mobile-hero {
    padding: 1.25rem 0 0.5rem;
    text-align: center;
}

.mobile-hero-title {
    font-size: 1.7rem;
    line-height: 1.2;
    letter-spacing: -0.5px;
    margin: 0 0 0.4rem;
}

.mobile-hero-title em {
    font-style: normal;
    color: var(--accent);
}

.mobile-hero-sub {
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.45;
    margin: 0 0 1rem;
}

.mobile-hero-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 0.9rem 0.9rem 1rem;
    margin-bottom: 1rem;
    text-align: left;
}

.mobile-hero-card #mobile-hero-board.cg-wrap {
    width: 180px;
    height: 180px;
    margin: 0 auto 0.7rem;
    display: block;
    border-radius: 4px;
    box-shadow: 0 4px 14px rgba(0, 0, 0, 0.35);
}

.mobile-hero-meta {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.5rem;
    margin-bottom: 0.5rem;
}

.mobile-hero-badge {
    display: inline-block;
    padding: 0.15rem 0.55rem;
    border-radius: 4px;
    font-size: 0.72rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    background: rgba(80, 180, 240, 0.18);
    color: #50b4f0;
}

.mobile-hero-eval {
    font-family: monospace;
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--text-muted);
}

.mobile-hero-liner {
    font-size: 0.95rem;
    line-height: 1.55;
    color: var(--text);
    margin: 0 0 0.6rem;
}

.mobile-hero-expand {
    margin-top: 0.25rem;
    border-top: 1px solid var(--border);
    padding-top: 0.5rem;
}

.mobile-hero-expand > summary {
    cursor: pointer;
    font-size: 0.82rem;
    font-weight: 600;
    color: var(--accent);
    list-style: none;
    padding: 0.2rem 0;
}

.mobile-hero-expand > summary::-webkit-details-marker { display: none; }

.mobile-hero-coach {
    margin-top: 0.6rem;
    font-size: 0.87rem;
    line-height: 1.6;
    color: var(--text-secondary);
}

.mobile-hero-coach p {
    margin: 0 0 0.7rem;
}

.mobile-hero-coach p:last-child {
    margin-bottom: 0;
}

.mobile-hero-cta {
    display: flex;
    flex-direction: column;
    gap: 0.55rem;
    margin-bottom: 0.75rem;
}

.mobile-hero-cta .btn {
    width: 100%;
    text-align: center;
}

.mobile-hero-email-link {
    display: inline-block;
    margin: 0.25rem auto 0;
    font-size: 0.82rem;
    color: var(--text-muted);
    text-align: center;
    text-decoration: underline;
}

.mobile-hero-trust {
    font-size: 0.78rem;
    color: var(--text-muted);
    text-align: center;
    margin: 0;
    line-height: 1.5;
}

/* ── Same game, both sides ─────────────────────────────────── */

.mobile-both-sides {
    padding: 1.5rem 0 0.5rem;
    text-align: center;
}

.mobile-both-sides-title {
    font-size: 1.3rem;
    letter-spacing: -0.3px;
    margin: 0 0 0.3rem;
}

.mobile-both-sides-sub {
    font-size: 0.88rem;
    color: var(--text-secondary);
    line-height: 1.5;
    margin: 0 0 1rem;
}

.mobile-both-sides-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 0.8rem 0.9rem 1rem;
    text-align: left;
}

.mobile-both-sides-toggle {
    display: flex;
    gap: 0.4rem;
    margin-bottom: 0.8rem;
}

.mobile-both-sides-pill {
    flex: 1;
    padding: 0.45rem 0.6rem;
    background: var(--bg-surface, transparent);
    color: var(--text-secondary);
    border: 1px solid var(--border);
    border-radius: 6px;
    font-size: 0.82rem;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.15s, color 0.15s, border-color 0.15s;
}

.mobile-both-sides-pill.is-active {
    background: var(--accent);
    color: #111;
    border-color: var(--accent);
}

.mobile-both-sides-card #mobile-both-sides-board.cg-wrap {
    width: 200px;
    height: 200px;
    margin: 0 auto 0.7rem;
    display: block;
    border-radius: 4px;
    box-shadow: 0 4px 14px rgba(0, 0, 0, 0.35);
}

.mobile-both-sides-meta {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.5rem;
    margin-bottom: 0.5rem;
}

.mobile-both-sides-badge {
    display: inline-block;
    padding: 0.15rem 0.55rem;
    border-radius: 4px;
    font-size: 0.72rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    background: rgba(80, 180, 240, 0.18);
    color: #50b4f0;
}

.mobile-both-sides-eval {
    font-family: monospace;
    font-size: 0.92rem;
    font-weight: 700;
    color: var(--text-muted);
}

.mobile-both-sides-liner {
    font-size: 0.92rem;
    line-height: 1.55;
    color: var(--text);
    margin: 0 0 0.6rem;
}

.mobile-both-sides-expand {
    margin-top: 0.25rem;
    border-top: 1px solid var(--border);
    padding-top: 0.5rem;
}

.mobile-both-sides-expand > summary {
    cursor: pointer;
    font-size: 0.82rem;
    font-weight: 600;
    color: var(--accent);
    list-style: none;
    padding: 0.2rem 0;
}

.mobile-both-sides-expand > summary::-webkit-details-marker { display: none; }

.mobile-both-sides-coach {
    margin-top: 0.6rem;
    font-size: 0.87rem;
    line-height: 1.6;
    color: var(--text-secondary);
}

.mobile-both-sides-coach p {
    margin: 0 0 0.7rem;
}

.mobile-both-sides-coach p:last-child {
    margin-bottom: 0;
}

/* ── Mobile landing — focus-visible ────────────────────────── */

.mobile-hero-cta .btn:focus-visible,
.mobile-both-sides-pill:focus-visible,
.mobile-hero-email-link:focus-visible,
.mobile-hero-expand > summary:focus-visible,
.mobile-both-sides-expand > summary:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
}