/* ── Reset & Base ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
    --primary: #0ea5e9;
    --primary-dark: #0284c7;
    --bg: #0f172a;
    --bg-alt: #1e293b;
    --text: #f1f5f9;
    --text-muted: #94a3b8;
    --border: #334155;
    --radius: 12px;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.7;
}

a { color: inherit; text-decoration: none; }

.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 24px;
}

/* ── Nav ── */
.nav {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(15, 23, 42, 0.92);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border);
    padding: 1rem 0;
}

.nav-inner {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
}

.nav-logo {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--primary);
    white-space: nowrap;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 1.75rem;
    align-items: center;
}

.nav-links a {
    color: var(--text-muted);
    font-size: 0.95rem;
    transition: color 0.2s;
}

.nav-links a:hover { color: var(--text); }

.nav-cta {
    background: var(--primary);
    color: white !important;
    padding: 0.45rem 1.1rem;
    border-radius: 6px;
    font-weight: 600;
    transition: background 0.2s !important;
}

.nav-cta:hover { background: var(--primary-dark) !important; }

.nav-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--text);
    font-size: 1.5rem;
    cursor: pointer;
}

/* ── Buttons ── */
.btn {
    display: inline-block;
    padding: 0.75rem 1.75rem;
    border-radius: 8px;
    font-weight: 600;
    font-size: 1rem;
    transition: all 0.2s;
    cursor: pointer;
}

.btn-primary {
    background: var(--primary);
    color: white;
}

.btn-primary:hover { background: var(--primary-dark); }

.btn-outline {
    border: 2px solid var(--primary);
    color: var(--primary);
}

.btn-outline:hover {
    background: var(--primary);
    color: white;
}

.btn-large {
    padding: 1rem 2.5rem;
    font-size: 1.1rem;
}

/* ── Sections ── */
.section { padding: 5rem 0; }
.section-alt { background: var(--bg-alt); }

.section-title {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    text-align: center;
}

.section-sub {
    color: var(--text-muted);
    text-align: center;
    margin-bottom: 3rem;
    font-size: 1.05rem;
}

.section-cta {
    text-align: center;
    margin-top: 2.5rem;
}

/* ── Hero ── */
.hero {
    padding: 7rem 0 6rem;
    text-align: center;
    background: linear-gradient(160deg, #0f172a 0%, #0c1f3f 50%, #0f172a 100%);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse at 50% 0%, rgba(14,165,233,0.15) 0%, transparent 70%);
    pointer-events: none;
}

.hero h1 {
    font-size: clamp(2.5rem, 6vw, 4rem);
    font-weight: 800;
    line-height: 1.15;
    margin-bottom: 1.25rem;
    letter-spacing: -0.02em;
}

.hero-sub {
    font-size: 1.2rem;
    color: var(--text-muted);
    max-width: 600px;
    margin: 0 auto 2.5rem;
}

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

/* ── What is New Think ── */
.what-inner {
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 3rem;
    align-items: center;
}

.what-text h2 {
    font-size: 1.75rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.what-text p {
    color: var(--text-muted);
    font-size: 1.05rem;
    max-width: 560px;
}

.stat-box {
    background: var(--bg-alt);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 2rem;
    text-align: center;
    min-width: 180px;
}

.stat-icon { font-size: 2.5rem; display: block; margin-bottom: 0.75rem; }
.stat-label { color: var(--text-muted); font-size: 0.95rem; line-height: 1.5; }

/* ── Use Case Cards ── */
.cards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 1.5rem;
    margin-top: 2.5rem;
}

.card {
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1.75rem;
    transition: border-color 0.2s, transform 0.2s;
}

.card:hover {
    border-color: var(--primary);
    transform: translateY(-2px);
}

.card-icon { font-size: 2rem; margin-bottom: 0.75rem; }
.card h3 { font-size: 1.1rem; margin-bottom: 0.5rem; }
.card p { color: var(--text-muted); font-size: 0.9rem; }

/* ── Article Cards ── */
.article-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
    margin-top: 2.5rem;
}

.article-card {
    background: var(--bg-alt);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    transition: border-color 0.2s, transform 0.2s;
}

.article-card:hover {
    border-color: var(--primary);
    transform: translateY(-2px);
}

.article-thumb {
    width: 100%;
    aspect-ratio: 16/9;
    overflow: hidden;
    background: var(--bg);
}

.article-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.article-thumb-placeholder {
    background: linear-gradient(135deg, #1e293b, #0f172a);
}

.article-card-body {
    padding: 1.25rem;
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.article-card-body h3 {
    font-size: 1rem;
    font-weight: 600;
    line-height: 1.4;
}

.article-card-body p {
    color: var(--text-muted);
    font-size: 0.875rem;
    flex: 1;
}

.article-date {
    font-size: 0.8rem;
    color: var(--text-muted);
}

/* ── Schedule a Call ── */
.schedule-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 2rem;
    flex-wrap: wrap;
}

.schedule h2 {
    font-size: 1.75rem;
    font-weight: 700;
    margin-bottom: 0.75rem;
}

.schedule p {
    color: var(--text-muted);
    max-width: 480px;
}

/* ── Footer ── */
.footer {
    padding: 2rem 0;
    border-top: 1px solid var(--border);
    background: var(--bg);
}

.footer-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 1rem;
}

.footer span { color: var(--text-muted); font-size: 0.875rem; }

.footer-links {
    display: flex;
    list-style: none;
    gap: 1.5rem;
}

.footer-links a {
    color: var(--text-muted);
    font-size: 0.875rem;
    transition: color 0.2s;
}

.footer-links a:hover { color: var(--text); }

/* ── Mobile ── */
@media (max-width: 768px) {
    .nav-links {
        display: none;
        flex-direction: column;
        position: absolute;
        top: 100%;
        left: 0; right: 0;
        background: var(--bg);
        border-bottom: 1px solid var(--border);
        padding: 1rem 24px 1.5rem;
        gap: 1.25rem;
    }

    .nav-links.open { display: flex; }
    .nav-toggle { display: block; }
    .nav { position: relative; }

    .what-inner { grid-template-columns: 1fr; }
    .stat-box { display: none; }

    .schedule-inner { flex-direction: column; align-items: flex-start; }

    .footer-inner { flex-direction: column; align-items: flex-start; }
}

/* ── Interior pages (articles, static pages, lists, topics) ── */

.page-main {
    min-height: calc(100vh - 120px);
    padding: 3rem 0 5rem;
}

.page-title {
    font-size: clamp(1.75rem, 4vw, 2.75rem);
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 0.75rem;
    letter-spacing: -0.02em;
}

/* ── Article single ── */

.article-meta-top {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.article-meta {
    color: var(--text-muted);
    font-size: 0.9rem;
    margin-bottom: 2rem;
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.tag-pill {
    display: inline-block;
    background: rgba(14,165,233,0.15);
    color: var(--primary);
    border: 1px solid rgba(14,165,233,0.3);
    border-radius: 999px;
    padding: 0.2rem 0.75rem;
    font-size: 0.8rem;
    font-weight: 500;
    text-decoration: none;
    transition: background 0.2s;
}

.tag-pill:hover {
    background: rgba(14,165,233,0.3);
}

.article-hero-image {
    width: 100%;
    max-height: 420px;
    overflow: hidden;
    border-radius: var(--radius);
    margin-bottom: 2.5rem;
}

.article-hero-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.article-body {
    max-width: 720px;
    font-size: 1.05rem;
    line-height: 1.85;
    color: var(--text);
}

.article-body h1,
.article-body h2,
.article-body h3,
.article-body h4 {
    font-weight: 700;
    line-height: 1.3;
    margin: 2rem 0 0.75rem;
    letter-spacing: -0.01em;
}

.article-body h2 { font-size: 1.5rem; }
.article-body h3 { font-size: 1.2rem; }
.article-body h4 { font-size: 1rem; }

.article-body p { margin-bottom: 1.25rem; }

.article-body a {
    color: var(--primary);
    text-decoration: underline;
    text-underline-offset: 3px;
}

.article-body ul,
.article-body ol {
    padding-left: 1.5rem;
    margin-bottom: 1.25rem;
}

.article-body li { margin-bottom: 0.4rem; }

.article-body blockquote {
    border-left: 3px solid var(--primary);
    padding: 0.5rem 0 0.5rem 1.25rem;
    color: var(--text-muted);
    font-style: italic;
    margin: 1.5rem 0;
}

.article-body code {
    background: var(--bg-alt);
    border: 1px solid var(--border);
    border-radius: 4px;
    padding: 0.15em 0.4em;
    font-size: 0.875em;
    font-family: "SF Mono", "Fira Code", monospace;
}

.article-body pre {
    background: var(--bg-alt);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1.25rem;
    overflow-x: auto;
    margin-bottom: 1.25rem;
}

.article-body pre code {
    background: none;
    border: none;
    padding: 0;
    font-size: 0.875rem;
}

.article-body img {
    max-width: 100%;
    border-radius: var(--radius);
    margin: 1rem 0;
}

.article-body hr {
    border: none;
    border-top: 1px solid var(--border);
    margin: 2rem 0;
}

.article-tags-footer {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-top: 2.5rem;
    padding-top: 2rem;
    border-top: 1px solid var(--border);
}

.article-nav-links {
    margin-top: 2rem;
}

/* ── List pages ── */

.list-header {
    margin-bottom: 2.5rem;
}

.list-desc {
    color: var(--text-muted);
    font-size: 1.05rem;
    margin-top: 0.5rem;
}

.list-cards {
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
}

.list-empty {
    color: var(--text-muted);
    font-size: 1rem;
    margin-top: 2rem;
}

/* ── Topic pages ── */

.topic-desc {
    color: var(--text-muted);
    font-size: 1.05rem;
    margin-top: 0.5rem;
    margin-bottom: 1.5rem;
}

.topic-intro {
    max-width: 720px;
    margin-bottom: 2.5rem;
    padding-bottom: 2rem;
    border-bottom: 1px solid var(--border);
}

.topic-articles-heading {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
}