/* SkillForge — Brand & Layout
   Amber-orange accent on cool dark slate. Forge-meets-digital. */

:root {
    /* Surfaces */
    --bg: #0a0e14;
    --bg-elevated: #141b26;
    --bg-subtle: #1c2433;
    --bg-input: #0f141c;

    /* Borders */
    --border: #202b3a;
    --border-hover: #2d3a4d;

    /* Text */
    --text: #e8edf5;
    --text-muted: #a0aab8;
    --text-dim: #6a7384;

    /* Brand accent */
    --accent: #ff8c42;
    --accent-hover: #ffa061;
    --accent-dim: rgba(255, 140, 66, 0.15);
    --accent-glow: rgba(255, 140, 66, 0.4);
    --accent-text: #1a1209;

    /* Secondary (cool counterpoint) */
    --cyan: #3ddbd9;
    --cyan-dim: rgba(61, 219, 217, 0.15);

    /* Semantic */
    --success: #34d399;
    --danger: #f87171;
    --warning: #fbbf24;

    /* Radii */
    --radius-sm: 4px;
    --radius: 8px;
    --radius-lg: 12px;
    --radius-xl: 20px;

    /* Layout */
    --maxw: 1200px;
    --maxw-narrow: 800px;
    --header-h: 64px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
    margin: 0;
    padding: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Inter, Roboto, sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

a {
    color: var(--accent);
    text-decoration: none;
    transition: color 0.15s;
}
a:hover { color: var(--accent-hover); }

img, svg { max-width: 100%; display: block; }

h1, h2, h3, h4 {
    font-weight: 700;
    letter-spacing: -0.02em;
    margin: 0;
    color: var(--text);
}

code, pre {
    font-family: "SF Mono", Menlo, Consolas, monospace;
    font-size: 13px;
}

::selection { background: var(--accent-dim); color: var(--text); }

/* ── Layout ─────────────────────────────────────── */

.container {
    max-width: var(--maxw);
    margin: 0 auto;
    padding: 0 24px;
}
.container-narrow {
    max-width: var(--maxw-narrow);
    margin: 0 auto;
    padding: 0 24px;
}

/* ── Header ─────────────────────────────────────── */

.site-header {
    position: sticky;
    top: 0;
    z-index: 50;
    background: rgba(10, 14, 20, 0.85);
    backdrop-filter: saturate(160%) blur(10px);
    -webkit-backdrop-filter: saturate(160%) blur(10px);
    border-bottom: 1px solid var(--border);
    height: var(--header-h);
    display: flex;
    align-items: center;
}
.site-header .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
}
.logo {
    font-size: 20px;
    font-weight: 800;
    letter-spacing: -0.04em;
    color: var(--text);
    display: flex;
    align-items: center;
    gap: 8px;
}
.logo:hover { color: var(--text); }
.logo span { color: var(--accent); }
.logo svg { color: var(--accent); }

.nav {
    display: flex;
    gap: 28px;
    align-items: center;
}
.nav a { font-size: 14px; font-weight: 500; }
.nav a:not(.btn) { color: var(--text-muted); }
.nav a:not(.btn):hover { color: var(--text); }
.mobile-nav-toggle { display: none; background: transparent; border: 0; color: var(--text); cursor: pointer; padding: 8px; }

/* ── Buttons ────────────────────────────────────── */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 18px;
    border-radius: var(--radius);
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    border: 1px solid transparent;
    background: var(--bg-subtle);
    color: var(--text);
    transition: background 0.15s, border-color 0.15s, transform 0.1s, box-shadow 0.15s;
    white-space: nowrap;
}
.btn:hover { background: #242d3a; text-decoration: none; color: var(--text); }
.btn:active { transform: translateY(1px); }

.btn-primary {
    background: var(--accent);
    border-color: var(--accent);
    color: var(--accent-text);
    box-shadow: 0 0 0 0 var(--accent-glow);
}
.btn-primary:hover {
    background: var(--accent-hover);
    border-color: var(--accent-hover);
    color: var(--accent-text);
    box-shadow: 0 8px 20px -8px var(--accent-glow);
}

.btn-secondary { border-color: var(--border); }
.btn-secondary:hover { border-color: var(--border-hover); background: var(--bg-subtle); }

.btn-ghost { background: transparent; }
.btn-ghost:hover { background: var(--bg-subtle); }

.btn-lg { padding: 14px 24px; font-size: 15px; }
.btn-block { display: flex; width: 100%; }

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

.hero {
    position: relative;
    padding: 96px 0 80px;
    overflow: hidden;
    border-bottom: 1px solid var(--border);
}
.hero::before {
    content: "";
    position: absolute;
    inset: 0;
    background:
        radial-gradient(ellipse 60% 40% at 20% 0%, var(--accent-dim) 0%, transparent 50%),
        radial-gradient(ellipse 50% 50% at 80% 20%, var(--cyan-dim) 0%, transparent 50%);
    pointer-events: none;
    z-index: 0;
}
.hero .container { position: relative; z-index: 1; }
.hero-content { text-align: center; max-width: 760px; margin: 0 auto 48px; }
.hero h1 {
    font-size: clamp(36px, 5vw, 56px);
    line-height: 1.1;
    margin-bottom: 20px;
    background: linear-gradient(180deg, var(--text) 0%, var(--text-muted) 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}
.hero h1 .highlight {
    background: linear-gradient(90deg, var(--accent) 0%, var(--cyan) 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    -webkit-box-decoration-break: clone;
}
.hero p.lead {
    font-size: clamp(16px, 2vw, 19px);
    color: var(--text-muted);
    margin: 0 0 32px;
    line-height: 1.6;
}
.hero-actions {
    display: flex;
    gap: 12px;
    justify-content: center;
    flex-wrap: wrap;
}

/* Hero code preview */
.code-preview {
    background: var(--bg-elevated);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    max-width: 720px;
    margin: 0 auto;
    box-shadow: 0 30px 60px -30px rgba(0, 0, 0, 0.8);
}
.code-preview-bar {
    background: var(--bg-subtle);
    padding: 10px 14px;
    display: flex;
    align-items: center;
    gap: 8px;
    border-bottom: 1px solid var(--border);
    font-size: 12px;
    color: var(--text-dim);
}
.code-preview-bar .dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--border-hover);
}
.code-preview-bar .title { margin-left: 12px; font-family: "SF Mono", Menlo, Consolas, monospace; }
.code-preview pre {
    margin: 0;
    padding: 20px;
    overflow-x: auto;
    color: var(--text);
    background: transparent;
    line-height: 1.6;
    font-size: 13px;
}
.code-preview .tok-key { color: var(--cyan); }
.code-preview .tok-str { color: #ffc99e; }
.code-preview .tok-cmt { color: var(--text-dim); font-style: italic; }
.code-preview .tok-tool { color: var(--accent); font-weight: 600; }
.code-preview .tok-ok { color: var(--success); }

/* ── Sections ───────────────────────────────────── */

.section { padding: 80px 0; }
.section-header { text-align: center; max-width: 640px; margin: 0 auto 48px; }
.section-header h2 {
    font-size: clamp(28px, 4vw, 40px);
    margin-bottom: 12px;
}
.section-header p {
    color: var(--text-muted);
    font-size: 17px;
    margin: 0;
}
.section-muted { background: var(--bg-elevated); border-block: 1px solid var(--border); }

.eyebrow {
    display: inline-block;
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--accent);
    margin-bottom: 12px;
}

/* ── Feature grid ───────────────────────────────── */

.feature-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}
.feature {
    background: var(--bg-elevated);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 28px;
    transition: border-color 0.15s, transform 0.15s;
}
.feature:hover { border-color: var(--border-hover); transform: translateY(-2px); }
.feature-icon {
    width: 44px;
    height: 44px;
    border-radius: var(--radius);
    background: var(--accent-dim);
    color: var(--accent);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 16px;
}
.feature h3 { font-size: 17px; margin-bottom: 8px; }
.feature p { color: var(--text-muted); margin: 0; font-size: 15px; }

/* ── Steps ──────────────────────────────────────── */

.steps {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    counter-reset: step;
}
.step {
    padding: 28px;
    background: var(--bg-elevated);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    position: relative;
}
.step::before {
    counter-increment: step;
    content: counter(step);
    position: absolute;
    top: -16px;
    left: 24px;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: var(--accent);
    color: var(--accent-text);
    font-weight: 800;
    font-size: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
}
.step h3 { font-size: 17px; margin: 8px 0 8px; }
.step p { color: var(--text-muted); margin: 0; font-size: 15px; }

/* ── Skills grid ────────────────────────────────── */

.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 20px;
}
.skill-card {
    display: flex;
    flex-direction: column;
    background: var(--bg-elevated);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 24px;
    transition: border-color 0.15s, transform 0.15s;
    color: var(--text);
    text-decoration: none;
}
.skill-card:hover {
    border-color: var(--accent);
    transform: translateY(-2px);
    text-decoration: none;
    color: var(--text);
}
.skill-card-head {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 12px;
    margin-bottom: 12px;
}
.skill-card h3 { font-size: 18px; margin: 0; }
.skill-card p {
    color: var(--text-muted);
    margin: 0;
    font-size: 14px;
    line-height: 1.5;
    flex: 1;
}
.skill-card-foot {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 16px;
    font-size: 13px;
    color: var(--text-dim);
}
.skill-card-foot .tool-count { font-family: "SF Mono", Menlo, Consolas, monospace; }

/* Tier badges */
.tier-badge {
    display: inline-flex;
    align-items: center;
    padding: 3px 10px;
    border-radius: 999px;
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    border: 1px solid;
}
.tier-personal { background: rgba(52, 211, 153, 0.1); color: var(--success); border-color: rgba(52, 211, 153, 0.3); }
.tier-pro { background: var(--accent-dim); color: var(--accent); border-color: rgba(255, 140, 66, 0.3); }
.tier-team { background: var(--cyan-dim); color: var(--cyan); border-color: rgba(61, 219, 217, 0.3); }

/* ── Pricing ────────────────────────────────────── */

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    margin-top: 48px;
}
.price-card {
    background: var(--bg-elevated);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 32px;
    display: flex;
    flex-direction: column;
    position: relative;
}
.price-card.featured {
    border-color: var(--accent);
    background: linear-gradient(180deg, var(--bg-elevated) 0%, rgba(255, 140, 66, 0.03) 100%);
}
.price-card.featured::before {
    content: "Most popular";
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--accent);
    color: var(--accent-text);
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    padding: 4px 12px;
    border-radius: 999px;
}
.price-card h3 { font-size: 18px; margin-bottom: 4px; }
.price-card .tagline { color: var(--text-muted); font-size: 14px; margin-bottom: 20px; }
.price-amount {
    display: flex;
    align-items: baseline;
    gap: 4px;
    margin-bottom: 4px;
}
.price-amount .price {
    font-size: 44px;
    font-weight: 800;
    letter-spacing: -0.03em;
}
.price-amount .interval { color: var(--text-muted); font-size: 15px; }
.price-annual { color: var(--text-dim); font-size: 13px; margin-bottom: 24px; min-height: 20px; }
.price-card ul {
    list-style: none;
    padding: 0;
    margin: 0 0 28px;
    flex: 1;
}
.price-card ul li {
    padding: 8px 0;
    display: flex;
    align-items: flex-start;
    gap: 10px;
    color: var(--text-muted);
    font-size: 14px;
    border-bottom: 1px solid var(--border);
}
.price-card ul li:last-child { border: none; }
.price-card ul li::before {
    content: "";
    flex-shrink: 0;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background: var(--accent-dim);
    border: 1.5px solid var(--accent);
    margin-top: 2px;
}

/* ── Catalog ────────────────────────────────────── */

.page-hero {
    padding: 56px 0 32px;
    border-bottom: 1px solid var(--border);
}
.page-hero h1 { font-size: clamp(28px, 4vw, 36px); margin-bottom: 8px; }
.page-hero p { color: var(--text-muted); margin: 0; font-size: 16px; }

.filters {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 24px 0;
    border-bottom: 1px solid var(--border);
    flex-wrap: wrap;
}
.filters input[type=search] {
    flex: 1;
    min-width: 240px;
    padding: 10px 14px;
    border-radius: var(--radius);
    border: 1px solid var(--border);
    background: var(--bg-input);
    color: var(--text);
    font-size: 14px;
    font-family: inherit;
    outline: none;
}
.filters input[type=search]:focus { border-color: var(--accent); }
.filters .category-chip {
    padding: 8px 14px;
    border-radius: 999px;
    border: 1px solid var(--border);
    background: var(--bg-elevated);
    color: var(--text-muted);
    font-size: 13px;
    cursor: pointer;
    font-family: inherit;
    transition: all 0.15s;
}
.filters .category-chip:hover { border-color: var(--border-hover); color: var(--text); }
.filters .category-chip.active { background: var(--accent-dim); border-color: var(--accent); color: var(--accent); }

/* ── Skill detail ───────────────────────────────── */

.detail-layout {
    display: grid;
    grid-template-columns: 1fr 320px;
    gap: 48px;
    padding: 48px 0;
}
.detail-header { margin-bottom: 32px; }
.breadcrumb { font-size: 13px; color: var(--text-dim); margin-bottom: 12px; }
.breadcrumb a { color: var(--text-muted); }
.breadcrumb .sep { margin: 0 8px; }
.detail-header h1 { font-size: 32px; margin-bottom: 8px; }
.detail-header .meta {
    display: flex;
    gap: 16px;
    align-items: center;
    color: var(--text-muted);
    font-size: 14px;
    margin-top: 16px;
    flex-wrap: wrap;
}

.detail-description { font-size: 16px; color: var(--text-muted); line-height: 1.7; margin-bottom: 40px; }

.tool-list { display: flex; flex-direction: column; gap: 16px; }
.tool-card {
    background: var(--bg-elevated);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 20px;
}
.tool-card h4 {
    font-family: "SF Mono", Menlo, Consolas, monospace;
    font-size: 14px;
    color: var(--accent);
    margin-bottom: 6px;
}
.tool-card p { color: var(--text-muted); margin: 0; font-size: 14px; }

.detail-sidebar { position: sticky; top: calc(var(--header-h) + 24px); align-self: start; }
.sidebar-card {
    background: var(--bg-elevated);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 24px;
    margin-bottom: 16px;
}
.sidebar-card h4 {
    font-size: 13px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-dim);
    margin-bottom: 12px;
}
.sidebar-price {
    font-size: 28px;
    font-weight: 800;
    letter-spacing: -0.02em;
    margin-bottom: 4px;
}
.sidebar-price .interval { font-size: 14px; color: var(--text-muted); font-weight: 500; }

/* ── Footer ─────────────────────────────────────── */

.site-footer {
    padding: 48px 0 32px;
    background: var(--bg-elevated);
    border-top: 1px solid var(--border);
    margin-top: 80px;
}
.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 32px;
    margin-bottom: 32px;
}
.footer-grid h5 {
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--text-dim);
    margin-bottom: 16px;
}
.footer-grid ul { list-style: none; padding: 0; margin: 0; }
.footer-grid ul li { padding: 4px 0; }
.footer-grid ul li a { color: var(--text-muted); font-size: 14px; }
.footer-grid ul li a:hover { color: var(--text); }
.footer-brand .tagline { color: var(--text-muted); font-size: 14px; margin-top: 12px; max-width: 280px; }
.footer-bottom {
    border-top: 1px solid var(--border);
    padding-top: 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: var(--text-dim);
    font-size: 13px;
    flex-wrap: wrap;
    gap: 12px;
}
.forge-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 4px 10px;
    border-radius: 999px;
    background: var(--accent-dim);
    color: var(--accent);
    font-size: 11px;
    font-weight: 600;
}

/* ── Auth pages (existing, tightened) ──────────── */

.auth-shell { min-height: calc(100vh - var(--header-h)); display: flex; align-items: center; justify-content: center; padding: 40px 16px; }
.auth-card {
    width: 100%;
    max-width: 440px;
    background: var(--bg-elevated);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 32px;
}
.auth-card h1 { margin: 0 0 8px; font-size: 24px; }
.auth-card .subtitle { color: var(--text-muted); font-size: 14px; margin-bottom: 24px; }

.form-group { margin-bottom: 16px; }
.form-group label { display: block; font-size: 13px; font-weight: 500; color: var(--text); margin-bottom: 6px; }
.form-group input[type=text],
.form-group input[type=email],
.form-group input[type=password] {
    width: 100%;
    padding: 11px 14px;
    border-radius: var(--radius);
    border: 1px solid var(--border);
    background: var(--bg-input);
    color: var(--text);
    font-size: 14px;
    font-family: inherit;
    outline: none;
    transition: border-color 0.15s;
}
.form-group input:focus { border-color: var(--accent); }

.alert { padding: 11px 14px; border-radius: var(--radius); font-size: 14px; margin-bottom: 16px; }
.alert-error { background: rgba(248, 113, 113, 0.1); border: 1px solid rgba(248, 113, 113, 0.3); color: var(--danger); }
.alert-success { background: rgba(52, 211, 153, 0.1); border: 1px solid rgba(52, 211, 153, 0.3); color: var(--success); }
.hidden { display: none !important; }

.auth-footer { margin-top: 16px; text-align: center; font-size: 14px; color: var(--text-muted); }

/* ── Dashboard ──────────────────────────────────── */

.dashboard-section { margin-bottom: 40px; }
.dashboard-section h2 {
    font-size: 20px;
    margin: 0 0 16px;
    padding-bottom: 10px;
    border-bottom: 1px solid var(--border);
}
.kv { display: grid; grid-template-columns: 160px 1fr; gap: 10px 16px; font-size: 14px; }
.kv dt { color: var(--text-muted); }
.kv dd { margin: 0; color: var(--text); }

.empty-state { text-align: center; padding: 48px 20px; color: var(--text-muted); font-size: 14px; }

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

@media (max-width: 1024px) {
    .detail-layout { grid-template-columns: 1fr; }
    .detail-sidebar { position: static; }
    .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
    .nav { display: none; }
    .nav.open {
        display: flex;
        flex-direction: column;
        position: absolute;
        top: var(--header-h);
        right: 0;
        left: 0;
        background: var(--bg-elevated);
        border-bottom: 1px solid var(--border);
        padding: 20px 24px;
        gap: 14px;
        align-items: stretch;
    }
    .mobile-nav-toggle { display: block; }
    .hero { padding: 64px 0 56px; }
    .section { padding: 56px 0; }
    .feature-grid, .steps, .pricing-grid { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr; gap: 24px; }
    .kv { grid-template-columns: 1fr; gap: 4px; }
    .kv dt { font-weight: 500; }
    .section-header { margin-bottom: 32px; }
}

@media (max-width: 480px) {
    .container, .container-narrow { padding: 0 16px; }
    .hero-actions { flex-direction: column; align-items: stretch; }
    .hero-actions .btn { width: 100%; }
    .code-preview pre { padding: 16px; font-size: 12px; }
    .price-card { padding: 24px; }
    .detail-header h1 { font-size: 24px; }
}