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

:root {
    --bg: #0b0d14;
    --bg2: #12151f;
    --bg3: #1a1e2e;
    --border: #252a3a;
    --text: #c8ccd8;
    --text-dim: #6b7394;
    --text-bright: #eef0f6;
    --accent: #a78bfa;
    --accent2: #c084fc;
    --green: #34d399;
    --green-dim: #064e3b;
    --yellow: #fbbf24;
    --yellow-dim: #78350f;
    --orange: #fb923c;
    --red: #f87171;
    --red-dim: #7f1d1d;
    --radius: 12px;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.7;
    font-size: 16px;
}

.container { max-width: 860px; margin: 0 auto; padding: 0 1.5rem; }

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

h2 {
    font-size: 1.8rem;
    color: var(--text-bright);
    margin-bottom: 0.5rem;
    letter-spacing: -0.5px;
}

.section-sub {
    color: var(--text-dim);
    margin-bottom: 2rem;
    font-size: 1rem;
}

code {
    font-family: 'SF Mono', 'Cascadia Code', monospace;
    font-size: 0.85em;
    background: var(--bg);
    padding: 0.15em 0.4em;
    border-radius: 4px;
    border: 1px solid var(--border);
}

/* ── Hero ── */
.hero {
    padding: 5rem 0 3.5rem;
    text-align: center;
    background: linear-gradient(180deg, #13102a 0%, var(--bg) 100%);
}

.hero-badge {
    display: inline-block;
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 2px;
    color: var(--accent);
    border: 1px solid var(--accent);
    border-radius: 100px;
    padding: 0.25rem 0.9rem;
    margin-bottom: 1.5rem;
    opacity: 0.7;
}

.hero h1 {
    font-size: clamp(2.2rem, 5.5vw, 3.4rem);
    color: var(--text-bright);
    line-height: 1.15;
    letter-spacing: -1.5px;
    margin-bottom: 1rem;
}

.gradient-text {
    background: linear-gradient(135deg, var(--accent), #ec4899, var(--yellow));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-sub {
    font-size: 1.1rem;
    color: var(--text-dim);
    max-width: 600px;
    margin: 0 auto 1.5rem;
    line-height: 1.7;
}

.hero-inspired {
    font-size: 0.82rem;
    color: var(--text-dim);
    opacity: 0.6;
}

/* ── Steps Grid ── */
.verdict, .landscape, .areas, .smarter, .architecture, .budget-section, .insight-section, .research-stats {
    padding: 4.5rem 0;
}
.landscape, .smarter { background: var(--bg2); }
.architecture { background: var(--bg2); }

.steps-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 0.75rem;
    margin-bottom: 1.5rem;
}

.step-card {
    background: var(--bg2);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1.25rem 1rem;
    text-align: center;
}

.step-num {
    font-size: 1.5rem;
    font-weight: 900;
    color: var(--accent);
    opacity: 0.3;
    margin-bottom: 0.25rem;
}

.step-text {
    font-size: 0.88rem;
    color: var(--text);
}

.steps-note {
    text-align: center;
    font-size: 0.88rem;
    color: var(--text-dim);
    font-style: italic;
}

/* ── Task List ── */
.task-list {
    display: flex;
    flex-direction: column;
    gap: 0;
}

.task-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.1rem 1.25rem;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    margin-bottom: 0;
    cursor: pointer;
    transition: background 0.15s;
}

.task-row:hover { background: var(--bg3); }

.task-name {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.task-emoji { font-size: 1.4rem; }

.task-name strong {
    font-size: 0.95rem;
    color: var(--text-bright);
    display: block;
}

.task-detail {
    font-size: 0.78rem;
    color: var(--text-dim);
}

.task-verdict {
    font-size: 0.72rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    padding: 0.3rem 0.8rem;
    border-radius: 100px;
    white-space: nowrap;
    flex-shrink: 0;
}

.task-verdict.easy { background: var(--green-dim); color: var(--green); }
.task-verdict.medium { background: var(--yellow-dim); color: var(--yellow); }
.task-verdict.hard { background: var(--red-dim); color: var(--red); }

.task-explainer {
    padding: 1rem 1.25rem 1.25rem;
    padding-left: 3.5rem;
    font-size: 0.88rem;
    color: var(--text-dim);
    line-height: 1.7;
    border: 1px solid var(--border);
    border-top: none;
    border-radius: 0 0 var(--radius) var(--radius);
    background: var(--bg2);
    margin-bottom: 0.75rem;
}

.task-explainer em { color: var(--yellow); font-style: normal; }
.task-explainer strong { color: var(--text); }

/* ── Verdict Box ── */
.verdict-box {
    text-align: center;
    padding: 2rem;
}

.verdict-grid-simple { margin-bottom: 2rem; }

.verdict-card.big-number {
    background: var(--bg2);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 2.5rem;
    text-align: center;
}

.verdict-pct {
    font-size: 5rem;
    font-weight: 900;
    letter-spacing: -4px;
    background: linear-gradient(135deg, var(--accent), var(--green));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.verdict-desc {
    font-size: 1.1rem;
    color: var(--text-dim);
}

.verdict-summary {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
}

.summary-item {
    border-radius: var(--radius);
    padding: 1.25rem;
}

.green-bg { background: rgba(6, 78, 59, 0.3); border: 1px solid rgba(52, 211, 153, 0.2); }
.yellow-bg { background: rgba(120, 53, 15, 0.3); border: 1px solid rgba(251, 191, 36, 0.2); }
.red-bg { background: rgba(127, 29, 29, 0.2); border: 1px solid rgba(248, 113, 113, 0.15); }

.summary-label {
    font-size: 0.82rem;
    font-weight: 700;
    margin-bottom: 0.35rem;
}

.green-bg .summary-label { color: var(--green); }
.yellow-bg .summary-label { color: var(--yellow); }
.red-bg .summary-label { color: var(--red); }

.summary-tasks {
    font-size: 0.8rem;
    color: var(--text-dim);
    line-height: 1.5;
}

/* ── Timeline ── */
.human-timeline { max-width: 700px; margin: 0 auto; }

.timeline-phase {
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1.25rem 1.5rem;
    margin-bottom: 0.75rem;
    position: relative;
}

.timeline-phase::before {
    content: '';
    position: absolute;
    left: 2rem;
    top: 100%;
    width: 2px;
    height: 0.75rem;
    background: var(--border);
}

.timeline-phase:last-child::before { display: none; }

.phase-label {
    font-size: 0.68rem;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    color: var(--accent);
    font-weight: 700;
    margin-bottom: 0.1rem;
}

.phase-title {
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--text-bright);
    margin-bottom: 0.6rem;
}

.timeline-phase ul { list-style: none; padding: 0; }

.timeline-phase li {
    font-size: 0.88rem;
    color: var(--text-dim);
    padding: 0.2rem 0;
    padding-left: 1.1rem;
    position: relative;
}

.timeline-phase li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0.65rem;
    width: 5px;
    height: 5px;
    border-radius: 50%;
    background: var(--border);
}

.approve-btn {
    font-size: 0.6rem;
    background: var(--green-dim);
    color: var(--green);
    padding: 0.12rem 0.45rem;
    border-radius: 4px;
    margin-left: 0.4rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* ── Tech Grid ── */
.tech-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.75rem;
}

.tech-card {
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1.25rem;
}

.tech-title {
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--text-bright);
    margin-bottom: 0.5rem;
}

.tech-apis {
    display: flex;
    flex-wrap: wrap;
    gap: 0.3rem;
    margin-bottom: 0.5rem;
}

.chip {
    font-size: 0.72rem;
    padding: 0.2rem 0.55rem;
    border-radius: 5px;
    background: var(--bg3);
    border: 1px solid var(--border);
    color: var(--accent);
}

.tech-card p {
    font-size: 0.82rem;
    color: var(--text-dim);
    line-height: 1.5;
}

/* ── Budget ── */
.budget-section { padding: 4.5rem 0; }

.budget-table-wrap { overflow-x: auto; }

.budget-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.88rem;
}

.budget-table th {
    text-align: left;
    font-size: 0.72rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--text-dim);
    padding: 0.65rem 1rem;
    border-bottom: 2px solid var(--border);
}

.budget-table td {
    padding: 0.5rem 1rem;
    border-bottom: 1px solid var(--border);
    color: var(--text);
}

.budget-table th:not(:first-child),
.budget-table td:not(:first-child) {
    text-align: right;
    font-family: 'SF Mono', monospace;
    font-size: 0.82rem;
}

.total-row td {
    font-weight: 700;
    color: var(--text-bright);
    border-top: 2px solid var(--accent);
    border-bottom: none;
}

.budget-note {
    font-size: 0.8rem;
    color: var(--text-dim);
    margin-top: 0.75rem;
}

/* ── Challenges ── */
.challenge-list {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

.challenge-card {
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1.25rem;
}

.challenge-icon {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
}

.challenge-card h3 {
    font-size: 0.92rem;
    color: var(--text-bright);
    margin-bottom: 0.4rem;
}

.challenge-card p {
    font-size: 0.82rem;
    color: var(--text-dim);
    line-height: 1.5;
    margin-bottom: 0.75rem;
}

.challenge-fix {
    font-size: 0.78rem;
    color: var(--green);
    padding: 0.5rem 0.75rem;
    background: rgba(6, 78, 59, 0.2);
    border-radius: 6px;
}

/* ── Big Insight ── */
.big-insight {
    max-width: 680px;
    margin: 0 auto;
    text-align: center;
}

.big-insight h2 { margin-bottom: 1.5rem; }

.big-insight blockquote {
    font-size: 1.15rem;
    color: var(--text-bright);
    font-style: italic;
    line-height: 1.6;
    border-left: 3px solid var(--accent);
    padding-left: 1.25rem;
    margin: 0 0 1.25rem;
    text-align: left;
}

.big-insight p {
    font-size: 0.92rem;
    color: var(--text-dim);
    text-align: left;
    line-height: 1.7;
    margin-bottom: 0.75rem;
}

/* ── Scale Grid ── */
.scale-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 0.75rem;
}

.scale-card {
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1.25rem;
    transition: border-color 0.2s;
}

.scale-card.active {
    border-color: var(--accent);
    background: rgba(167, 139, 250, 0.05);
}

.scale-size {
    font-size: 1rem;
    font-weight: 700;
    color: var(--text-bright);
    margin-bottom: 0.5rem;
    line-height: 1.3;
}

.scale-size span {
    font-size: 0.75rem;
    font-weight: 400;
    color: var(--text-dim);
}

.scale-detail {
    font-size: 0.8rem;
    color: var(--text-dim);
    line-height: 1.5;
}

.scale-detail strong {
    color: var(--text);
    display: block;
    margin-bottom: 0.25rem;
}

/* ── Research Stats ── */
.research-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 0.75rem;
    margin-bottom: 1.5rem;
}

.research-item {
    text-align: center;
    background: var(--bg2);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1.25rem 0.75rem;
}

.research-num {
    font-size: 2rem;
    font-weight: 900;
    color: var(--accent);
    letter-spacing: -1.5px;
}

.research-label {
    font-size: 0.75rem;
    color: var(--text-dim);
}

.research-links {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    justify-content: center;
}

.research-link {
    font-size: 0.8rem;
    padding: 0.4rem 0.9rem;
    border: 1px solid var(--border);
    border-radius: 100px;
    color: var(--text-dim);
    transition: all 0.15s;
}

.research-link:hover {
    border-color: var(--accent);
    color: var(--accent);
    text-decoration: none;
}

/* ── Footer ── */
footer {
    padding: 2.5rem 0;
    text-align: center;
    border-top: 1px solid var(--border);
}

footer p {
    font-size: 0.78rem;
    color: var(--text-dim);
}

/* ── Responsive ── */
@media (max-width: 768px) {
    .steps-grid { grid-template-columns: repeat(2, 1fr); }
    .tech-grid { grid-template-columns: 1fr; }
    .challenge-list { grid-template-columns: 1fr; }
    .verdict-summary { grid-template-columns: 1fr; }
    .scale-grid { grid-template-columns: repeat(2, 1fr); }
    .research-grid { grid-template-columns: repeat(2, 1fr); }
    .task-row { flex-direction: column; align-items: flex-start; gap: 0.5rem; }
}

@media (max-width: 480px) {
    .steps-grid { grid-template-columns: 1fr 1fr; }
    .scale-grid { grid-template-columns: 1fr; }
    .research-grid { grid-template-columns: 1fr 1fr; }
}