:root {
    --at-bg: #0f1117;
    --at-bg-elevated: #161822;
    --at-bg-card: #1c1f2e;
    --at-bg-card-hover: #232738;
    --at-border: #2d3348;
    --at-text: #eef0f8;
    --at-muted: #8b93ad;
    --at-primary: #7c6cf0;
    --at-primary-glow: rgba(124, 108, 240, 0.35);
    --at-accent: #3dd6c6;
    --at-accent2: #5b9cf5;
    --at-warning: #f0b429;
    --at-danger: #f07178;
    --at-success: #4ade80;
    --at-radius: 14px;
    --at-font: 'Inter', system-ui, sans-serif;
}

* { box-sizing: border-box; }

body {
    font-family: var(--at-font);
    background: var(--at-bg);
    color: var(--at-text);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    background-image:
        radial-gradient(ellipse 80% 50% at 50% -20%, rgba(124, 108, 240, 0.15), transparent),
        radial-gradient(ellipse 60% 40% at 100% 0%, rgba(61, 214, 198, 0.08), transparent);
}

/* ── Navbar ── */
.at-navbar {
    background: rgba(15, 17, 23, 0.92) !important;
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--at-border);
    padding-block: 0.65rem;
}

.at-brand {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    text-decoration: none;
}

.at-logo {
    width: 42px;
    height: 42px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--at-primary), var(--at-accent2));
    display: grid;
    place-items: center;
    font-size: 1.2rem;
    color: #fff;
    box-shadow: 0 0 20px var(--at-primary-glow);
}

.at-logo-sm { width: 36px; height: 36px; font-size: 1rem; }

.at-brand-text {
    display: flex;
    flex-direction: column;
    line-height: 1.15;
    color: var(--at-text);
}

.at-brand-text strong { font-size: 1.15rem; letter-spacing: -0.02em; }
.at-brand-text small { font-size: 0.62rem; text-transform: uppercase; letter-spacing: 0.06em; color: var(--at-muted); }

.at-nav-pills .nav-link {
    color: var(--at-muted);
    border-radius: 999px;
    padding: 0.45rem 0.9rem;
    font-size: 0.88rem;
    font-weight: 500;
    transition: all 0.2s ease;
}

.at-nav-pills .nav-link:hover { color: var(--at-text); background: rgba(124, 108, 240, 0.12); }
.at-nav-pills .nav-link.active {
    color: #fff;
    background: linear-gradient(135deg, var(--at-primary), #6355d8);
    box-shadow: 0 4px 16px var(--at-primary-glow);
}

.btn-at-primary {
    background: linear-gradient(135deg, var(--at-primary), #6355d8);
    border: none;
    color: #fff;
    font-weight: 600;
    border-radius: 999px;
    padding: 0.45rem 1.1rem;
}

.btn-at-primary:hover {
    color: #fff;
    filter: brightness(1.1);
    box-shadow: 0 4px 20px var(--at-primary-glow);
}

.btn-at-outline {
    border: 1px solid var(--at-border);
    color: var(--at-text);
    border-radius: 999px;
    background: transparent;
}

.btn-at-outline:hover {
    background: var(--at-bg-card);
    border-color: var(--at-primary);
    color: var(--at-text);
}

/* ── Hero ── */
.at-hero {
    padding: 4rem 0 3rem;
    position: relative;
    overflow: hidden;
}

.at-hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.35rem 0.85rem;
    border-radius: 999px;
    background: rgba(124, 108, 240, 0.15);
    border: 1px solid rgba(124, 108, 240, 0.3);
    color: #c4baff;
    font-size: 0.8rem;
    font-weight: 600;
    margin-bottom: 1.25rem;
}

.at-hero h1 {
    font-size: clamp(2rem, 5vw, 3.2rem);
    font-weight: 800;
    letter-spacing: -0.03em;
    line-height: 1.1;
    margin-bottom: 1rem;
}

.at-hero h1 .gradient-text {
    background: linear-gradient(135deg, var(--at-accent), var(--at-primary), var(--at-accent2));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.at-hero-lead {
    font-size: 1.1rem;
    color: var(--at-muted);
    max-width: 540px;
    line-height: 1.65;
}

/* ── Cards ── */
.at-card {
    background: var(--at-bg-card);
    border: 1px solid var(--at-border);
    border-radius: var(--at-radius);
    padding: 1.5rem;
    height: 100%;
    transition: transform 0.2s, border-color 0.2s, box-shadow 0.2s;
}

.at-card:hover {
    border-color: rgba(124, 108, 240, 0.4);
    transform: translateY(-2px);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
}

.at-card-icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    display: grid;
    place-items: center;
    font-size: 1.35rem;
    margin-bottom: 1rem;
}

.at-card-icon.purple { background: rgba(124, 108, 240, 0.2); color: #b4a8ff; }
.at-card-icon.teal { background: rgba(61, 214, 198, 0.2); color: var(--at-accent); }
.at-card-icon.blue { background: rgba(91, 156, 245, 0.2); color: var(--at-accent2); }
.at-card-icon.amber { background: rgba(240, 180, 41, 0.2); color: var(--at-warning); }
.at-card-icon.green { background: rgba(74, 222, 128, 0.2); color: var(--at-success); }
.at-card-icon.red { background: rgba(240, 113, 120, 0.2); color: var(--at-danger); }

.at-card h3 { font-size: 1.05rem; font-weight: 700; margin-bottom: 0.5rem; }
.at-card p { color: var(--at-muted); font-size: 0.9rem; margin-bottom: 0; line-height: 1.55; }

/* ── Section headers ── */
.at-section { padding: 4rem 0; }
.at-section-alt { background: var(--at-bg-elevated); border-block: 1px solid var(--at-border); }

.at-section-label {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--at-primary);
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.at-section-title {
    font-size: clamp(1.6rem, 3vw, 2.2rem);
    font-weight: 800;
    letter-spacing: -0.02em;
    margin-bottom: 0.75rem;
}

.at-section-desc { color: var(--at-muted); max-width: 640px; }

/* ── Flow pipeline ── */
.at-pipeline {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    align-items: center;
    justify-content: center;
    padding: 2rem 1rem;
}

.at-pipeline-step {
    background: var(--at-bg-card);
    border: 1px solid var(--at-border);
    border-radius: 12px;
    padding: 1rem 1.25rem;
    text-align: center;
    min-width: 130px;
    position: relative;
}

.at-pipeline-step .step-num {
    font-size: 0.7rem;
    color: var(--at-primary);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.at-pipeline-step .step-icon { font-size: 1.5rem; margin: 0.35rem 0; display: block; }
.at-pipeline-step .step-label { font-size: 0.85rem; font-weight: 600; }
.at-pipeline-step .step-desc { font-size: 0.72rem; color: var(--at-muted); margin-top: 0.2rem; }

.at-pipeline-arrow { color: var(--at-muted); font-size: 1.2rem; }

.at-pipeline-step.active {
    border-color: var(--at-primary);
    box-shadow: 0 0 24px var(--at-primary-glow);
    animation: pulse-step 2s ease-in-out infinite;
}

@keyframes pulse-step {
    0%, 100% { box-shadow: 0 0 12px var(--at-primary-glow); }
    50% { box-shadow: 0 0 28px var(--at-primary-glow); }
}

/* ── Task graph demo ── */
.at-graph-panel {
    background: #0a0c12;
    border: 1px solid var(--at-border);
    border-radius: var(--at-radius);
    overflow: hidden;
    position: relative;
}

.at-graph-header {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 0.75rem;
    padding: 0.75rem 1rem;
    background: rgba(28, 31, 46, 0.9);
    border-bottom: 1px solid var(--at-border);
    font-size: 0.82rem;
}

.at-graph-stats span {
    display: inline-flex;
    align-items: center;
    gap: 0.3rem;
    margin-right: 1rem;
    color: var(--at-muted);
}

.at-graph-stats strong { color: var(--at-text); }

.at-graph-canvas-wrap {
    position: relative;
    height: 380px;
    background:
        radial-gradient(circle at 50% 50%, rgba(124, 108, 240, 0.06) 0%, transparent 60%),
        linear-gradient(rgba(45, 51, 72, 0.3) 1px, transparent 1px),
        linear-gradient(90deg, rgba(45, 51, 72, 0.3) 1px, transparent 1px);
    background-size: auto, 24px 24px, 24px 24px;
}

.at-graph-canvas-wrap canvas,
.at-graph-canvas-wrap svg {
    width: 100%;
    height: 100%;
    display: block;
}

.at-graph-hint {
    position: absolute;
    bottom: 0.5rem;
    left: 50%;
    transform: translateX(-50%);
    font-size: 0.7rem;
    color: var(--at-muted);
    background: rgba(0, 0, 0, 0.6);
    padding: 0.25rem 0.75rem;
    border-radius: 999px;
    white-space: nowrap;
    pointer-events: none;
}

/* ── Live log ── */
.at-live-log {
    background: var(--at-bg-card);
    border: 1px solid var(--at-border);
    border-radius: var(--at-radius);
    height: 380px;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.at-live-log-header {
    padding: 0.75rem 1rem;
    border-bottom: 1px solid var(--at-border);
    font-weight: 600;
    font-size: 0.9rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.at-live-log-body {
    flex: 1;
    overflow-y: auto;
    padding: 0.5rem;
    font-family: 'Consolas', 'Cascadia Code', monospace;
    font-size: 0.78rem;
}

.at-log-entry {
    display: flex;
    gap: 0.5rem;
    padding: 0.4rem 0.5rem;
    border-radius: 6px;
    margin-bottom: 2px;
    animation: log-slide-in 0.3s ease;
}

@keyframes log-slide-in {
    from { opacity: 0; transform: translateX(-8px); }
    to { opacity: 1; transform: translateX(0); }
}

.at-log-entry:hover { background: rgba(255, 255, 255, 0.03); }

.at-log-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    margin-top: 5px;
    flex-shrink: 0;
}

.at-log-dot.purple { background: var(--at-primary); }
.at-log-dot.teal { background: var(--at-accent); }
.at-log-dot.blue { background: var(--at-accent2); }
.at-log-dot.amber { background: var(--at-warning); }
.at-log-dot.red { background: var(--at-danger); }
.at-log-dot.green { background: var(--at-success); }

.at-log-time { color: var(--at-muted); white-space: nowrap; }
.at-log-msg { color: var(--at-text); word-break: break-word; }

/* ── Agent chips ── */
.at-agent-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
    gap: 0.75rem;
}

.at-agent-chip {
    background: var(--at-bg-card);
    border: 1px solid var(--at-border);
    border-radius: 12px;
    padding: 1rem;
    text-align: center;
    transition: all 0.2s;
}

.at-agent-chip:hover {
    border-color: var(--at-primary);
    background: var(--at-bg-card-hover);
}

.at-agent-chip .chip-icon { font-size: 1.6rem; margin-bottom: 0.35rem; }
.at-agent-chip .chip-name { font-weight: 600; font-size: 0.88rem; }
.at-agent-chip .chip-desc { font-size: 0.72rem; color: var(--at-muted); margin-top: 0.2rem; }

/* ── Gallery ── */
.at-gallery-item {
    position: relative;
    border-radius: var(--at-radius);
    overflow: hidden;
    border: 1px solid var(--at-border);
    cursor: pointer;
    transition: transform 0.2s, box-shadow 0.2s;
}

.at-gallery-item:hover {
    transform: scale(1.02);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.4);
}

.at-gallery-item img {
    width: 100%;
    height: 220px;
    object-fit: cover;
    object-position: top;
    display: block;
}

.at-gallery-caption {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 1rem;
    background: linear-gradient(transparent, rgba(0, 0, 0, 0.85));
}

.at-gallery-caption h4 { font-size: 0.95rem; margin-bottom: 0.2rem; }
.at-gallery-caption p { font-size: 0.75rem; color: var(--at-muted); margin: 0; }

/* ── Example cards ── */
.at-example-card {
    border-left: 3px solid var(--at-primary);
}

.at-example-prompt {
    background: rgba(0, 0, 0, 0.3);
    border-radius: 8px;
    padding: 0.75rem 1rem;
    font-size: 0.85rem;
    font-style: italic;
    color: #c8cce0;
    margin: 0.75rem 0;
    border: 1px solid var(--at-border);
}

.at-example-result {
    font-size: 0.82rem;
    color: var(--at-muted);
}

.at-example-result li { margin-bottom: 0.25rem; }

/* ── Feature table ── */
.at-table {
    --bs-table-bg: transparent;
    --bs-table-color: var(--at-text);
    --bs-table-border-color: var(--at-border);
    font-size: 0.88rem;
}

.at-table thead th {
    background: var(--at-bg-elevated);
    color: var(--at-muted);
    font-weight: 600;
    text-transform: uppercase;
    font-size: 0.72rem;
    letter-spacing: 0.05em;
}

/* ── Status bar ── */
.at-status-bar {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: rgba(10, 12, 18, 0.95);
    border-top: 1px solid var(--at-border);
    padding: 0.45rem 1.25rem;
    font-size: 0.8rem;
    color: var(--at-muted);
    display: flex;
    align-items: center;
    gap: 0.5rem;
    z-index: 1030;
    backdrop-filter: blur(8px);
}

.at-status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--at-success);
    animation: status-blink 2s ease-in-out infinite;
}

@keyframes status-blink {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.4; }
}

body { padding-bottom: 2.5rem; }

/* ── Page hero (inner pages) ── */
.at-page-hero {
    padding: 3rem 0 2rem;
    border-bottom: 1px solid var(--at-border);
    background: var(--at-bg-elevated);
}

.at-page-hero h1 { font-size: 2rem; font-weight: 800; letter-spacing: -0.02em; }
.at-page-hero p { color: var(--at-muted); max-width: 700px; margin-bottom: 0; }

/* ── Tabs content ── */
.at-feature-tabs .nav-link {
    color: var(--at-muted);
    border: 1px solid transparent;
    border-radius: 10px;
    font-size: 0.88rem;
    font-weight: 500;
}

.at-feature-tabs .nav-link.active {
    background: var(--at-bg-card);
    border-color: var(--at-border);
    color: var(--at-text);
}

/* ── Comparison badges ── */
.at-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.3rem;
    padding: 0.2rem 0.6rem;
    border-radius: 6px;
    font-size: 0.72rem;
    font-weight: 600;
}

.at-badge.done { background: rgba(74, 222, 128, 0.15); color: var(--at-success); }
.at-badge.running { background: rgba(240, 180, 41, 0.15); color: var(--at-warning); }
.at-badge.pending { background: rgba(139, 147, 173, 0.15); color: var(--at-muted); }

/* ── Accordion dark ── */
.accordion-item {
    background: var(--at-bg-card);
    border: 1px solid var(--at-border) !important;
    margin-bottom: 0.5rem;
    border-radius: 10px !important;
    overflow: hidden;
}

.accordion-button {
    background: var(--at-bg-card) !important;
    color: var(--at-text) !important;
    font-weight: 600;
    box-shadow: none !important;
}

.accordion-button:not(.collapsed) {
    background: var(--at-bg-elevated) !important;
    color: var(--at-primary) !important;
}

.accordion-body { color: var(--at-muted); font-size: 0.9rem; }

/* ── Modal gallery ── */
.modal-content {
    background: var(--at-bg-card);
    border: 1px solid var(--at-border);
}

.modal-header, .modal-footer { border-color: var(--at-border); }

/* ── Footer ── */
.at-footer {
    background: var(--at-bg-elevated);
    border-top: 1px solid var(--at-border);
    margin-top: auto;
}

.at-footer-top { border-bottom: 1px solid var(--at-border); }

.at-footer-heading {
    font-size: 0.72rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--at-muted);
    font-weight: 700;
    margin-bottom: 1rem;
}

.at-footer-nav {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.at-footer-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.45rem;
    padding: 0.45rem 0.85rem;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 10px;
    color: var(--at-muted);
    font-size: 0.82rem;
    font-weight: 500;
    text-decoration: none !important;
    transition: background 0.2s, border-color 0.2s, color 0.2s, transform 0.15s;
}

.at-footer-btn:hover {
    background: rgba(124, 108, 240, 0.12);
    border-color: rgba(124, 108, 240, 0.35);
    color: var(--at-text);
    transform: translateY(-1px);
}

.at-footer-btn i { font-size: 0.9rem; opacity: 0.85; }

.at-footer-reqs {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: 0.55rem;
}

.at-footer-reqs li {
    display: flex;
    align-items: center;
    gap: 0.65rem;
    font-size: 0.85rem;
    color: var(--at-muted);
    padding: 0.4rem 0.65rem;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.06);
    border-radius: 8px;
}

.at-footer-reqs i {
    color: var(--at-primary);
    font-size: 0.95rem;
    width: 1.1rem;
    text-align: center;
    flex-shrink: 0;
}

.at-footer-chip {
    display: inline-block;
    padding: 0.25rem 0.65rem;
    font-size: 0.72rem;
    font-weight: 600;
    color: var(--at-muted);
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 999px;
}

/* ── Precios ── */
.at-price-card {
    background: var(--at-bg-card);
    border: 1px solid var(--at-border);
    border-radius: var(--at-radius);
    padding: 2rem 1.75rem;
    height: 100%;
    display: flex;
    flex-direction: column;
    position: relative;
    transition: transform 0.2s, box-shadow 0.2s;
}

.at-price-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.25);
}

.at-price-card-featured {
    border-color: var(--at-primary);
    background: linear-gradient(180deg, rgba(124, 108, 240, 0.1) 0%, var(--at-bg-card) 40%);
    box-shadow: 0 0 40px var(--at-primary-glow);
}

.at-price-badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    background: linear-gradient(135deg, var(--at-primary), #6355d8);
    color: #fff;
    font-size: 0.72rem;
    font-weight: 700;
    padding: 0.3rem 0.9rem;
    border-radius: 999px;
    white-space: nowrap;
}

.at-price-name {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 0.75rem;
    text-align: center;
}

.at-price-amount {
    font-size: 2.5rem;
    font-weight: 800;
    text-align: center;
    letter-spacing: -0.03em;
    line-height: 1;
}

.at-price-card-featured .at-price-amount {
    background: linear-gradient(135deg, var(--at-accent), var(--at-primary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.at-price-period {
    text-align: center;
    font-size: 0.82rem;
    color: var(--at-muted);
    margin: 0.5rem 0 1.5rem;
}

.at-price-features {
    list-style: none;
    padding: 0;
    margin: 0 0 1.5rem;
    flex: 1;
}

.at-price-features li {
    display: flex;
    align-items: flex-start;
    gap: 0.5rem;
    font-size: 0.88rem;
    color: var(--at-muted);
    margin-bottom: 0.65rem;
    line-height: 1.45;
}

.at-price-features i {
    color: var(--at-success);
    margin-top: 3px;
    flex-shrink: 0;
}

.at-price-form-card { border: 1px solid rgba(124, 108, 240, 0.25); }

.at-input {
    background: rgba(0, 0, 0, 0.25) !important;
    border-color: var(--at-border) !important;
    color: var(--at-text) !important;
}

.at-input:focus {
    background: rgba(0, 0, 0, 0.35) !important;
    border-color: var(--at-primary) !important;
    color: var(--at-text) !important;
    box-shadow: 0 0 0 0.2rem var(--at-primary-glow) !important;
}

.at-input::placeholder { color: #5a6278; }

/* ── Responsive ── */
@media (max-width: 768px) {
    .at-hero { padding: 2.5rem 0 2rem; }
    .at-graph-canvas-wrap, .at-live-log { height: 280px; }
    .at-pipeline-arrow { display: none; }
    .at-pipeline { flex-direction: column; }
}