/* YourAIPlaybook - Design System */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&family=Space+Grotesk:wght@400;500;600;700&display=swap');

:root {
    --ink: #0f172a;
    --ink-light: #334155;
    --muted: #64748b;
    --bg: #fafbfc;
    --surface: #ffffff;
    --surface-glass: rgba(255,255,255,0.72);
    --line: #e2e8f0;
    --line-light: #f1f5f9;

    /* Warm coral + teal palette */
    --coral: #f97066;
    --coral-light: #fef2f2;
    --coral-dark: #dc2626;
    --teal: #0d9488;
    --teal-light: #ccfbf1;
    --teal-dark: #115e59;
    --sky: #38bdf8;
    --amber: #f59e0b;

    --gradient-hero: linear-gradient(135deg, #fef2f2 0%, #f0fdfa 50%, #f0f9ff 100%);
    --gradient-cta: linear-gradient(135deg, var(--coral) 0%, var(--teal) 100%);
    --gradient-card: linear-gradient(180deg, #fff 0%, #fafbfc 100%);

    --radius: 16px;
    --radius-sm: 10px;
    --radius-xl: 24px;
    --shadow-sm: 0 1px 3px rgba(15,23,42,0.06);
    --shadow-md: 0 4px 16px rgba(15,23,42,0.08);
    --shadow-lg: 0 12px 40px rgba(15,23,42,0.10);
    --shadow-glow: 0 0 60px rgba(249,112,102,0.12);
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    color: var(--ink);
    background: var(--bg);
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
}

.container {
    width: min(1140px, 92%);
    margin: 0 auto;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }

/* --- Typography --- */
h1, h2, h3, h4 {
    font-family: 'Space Grotesk', 'Inter', sans-serif;
    font-weight: 700;
    line-height: 1.15;
    letter-spacing: -0.02em;
}

h1 { font-size: clamp(2.2rem, 5vw, 3.6rem); }
h2 { font-size: clamp(1.6rem, 3.5vw, 2.4rem); }
h3 { font-size: 1.25rem; }
h4 { font-size: 1.05rem; }

.text-muted { color: var(--muted); }
.text-coral { color: var(--coral); }
.text-teal { color: var(--teal); }
.text-center { text-align: center; }

/* --- Buttons --- */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    border-radius: 999px;
    font-weight: 600;
    font-size: 0.95rem;
    border: none;
    cursor: pointer;
    transition: all 0.25s ease;
    text-decoration: none;
    line-height: 1.4;
}

.btn-primary {
    background: var(--gradient-cta);
    color: #fff;
    box-shadow: 0 4px 14px rgba(249,112,102,0.3);
}
.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(249,112,102,0.4);
}

.btn-outline {
    background: var(--surface);
    color: var(--ink);
    border: 1.5px solid var(--line);
}
.btn-outline:hover {
    border-color: var(--coral);
    color: var(--coral);
    transform: translateY(-1px);
}

.btn-ghost {
    background: transparent;
    color: var(--teal);
    padding: 0.75rem 0.5rem;
}
.btn-ghost:hover { color: var(--teal-dark); }

.btn-lg {
    padding: 1rem 2rem;
    font-size: 1.05rem;
}

/* --- Header --- */
header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: var(--surface-glass);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--line);
}

.nav-wrap {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.85rem 0;
}

.logo {
    font-family: 'Space Grotesk', sans-serif;
    font-weight: 700;
    font-size: 1.3rem;
    color: var(--ink);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}
.logo span { color: var(--coral); }

.nav-links {
    display: flex;
    align-items: center;
    gap: 0;
    list-style: none;
}

.nav-links a {
    padding: 0.5rem 1rem;
    font-weight: 500;
    color: var(--ink-light);
    font-size: 0.92rem;
    border-radius: var(--radius-sm);
    transition: color 0.2s;
}
.nav-links a:hover, .nav-links a.active {
    color: var(--coral);
}

.nav-cta {
    margin-left: 0.5rem;
}

.menu-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--ink);
    padding: 0.25rem;
}

/* --- Hero --- */
.hero {
    background: var(--gradient-hero);
    padding: 5rem 0 4rem;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -40%;
    right: -20%;
    width: 700px;
    height: 700px;
    background: radial-gradient(circle, rgba(249,112,102,0.08) 0%, transparent 70%);
    border-radius: 50%;
}

.hero::after {
    content: '';
    position: absolute;
    bottom: -30%;
    left: -10%;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(13,148,136,0.06) 0%, transparent 70%);
    border-radius: 50%;
}

.hero .container { position: relative; z-index: 1; }

.hero-grid {
    display: grid;
    grid-template-columns: 1.15fr 0.85fr;
    gap: 3rem;
    align-items: center;
}

.hero-eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.3rem 0.9rem;
    background: var(--coral-light);
    border: 1px solid rgba(249,112,102,0.2);
    border-radius: 999px;
    font-size: 0.82rem;
    font-weight: 600;
    color: var(--coral-dark);
    margin-bottom: 1.2rem;
}

.hero h1 { margin-bottom: 1rem; }

.hero-subtitle {
    font-size: 1.15rem;
    color: var(--muted);
    max-width: 52ch;
    margin-bottom: 2rem;
    line-height: 1.7;
}

.hero-actions {
    display: flex;
    gap: 0.8rem;
    flex-wrap: wrap;
    margin-bottom: 2rem;
}

.hero-proof {
    display: flex;
    align-items: center;
    gap: 1rem;
    font-size: 0.88rem;
    color: var(--muted);
}
.hero-proof .dot { color: var(--line); }

.hero-visual {
    position: relative;
}

.hero-card-stack {
    position: relative;
    perspective: 1000px;
}

.hero-card {
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: var(--radius-xl);
    padding: 1.8rem;
    box-shadow: var(--shadow-lg), var(--shadow-glow);
}

.hero-card-label {
    font-size: 0.78rem;
    font-weight: 600;
    color: var(--teal);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    margin-bottom: 0.8rem;
}

.hero-card h3 {
    margin-bottom: 0.5rem;
}

.hero-card p {
    color: var(--muted);
    font-size: 0.95rem;
}

.hero-card-list {
    list-style: none;
    margin-top: 1rem;
}

.hero-card-list li {
    padding: 0.5rem 0;
    border-bottom: 1px solid var(--line-light);
    display: flex;
    align-items: center;
    gap: 0.6rem;
    font-size: 0.92rem;
    color: var(--ink-light);
}
.hero-card-list li:last-child { border-bottom: none; }

.check-icon {
    width: 20px;
    height: 20px;
    background: var(--teal-light);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.7rem;
    color: var(--teal);
    flex-shrink: 0;
}

/* --- Sections --- */
section { padding: 5rem 0; }

.section-header {
    text-align: center;
    max-width: 640px;
    margin: 0 auto 3rem;
}

.section-header h2 { margin-bottom: 0.6rem; }

.section-header p {
    color: var(--muted);
    font-size: 1.05rem;
    line-height: 1.7;
}

.section-eyebrow {
    display: inline-block;
    font-size: 0.8rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--coral);
    margin-bottom: 0.6rem;
}

/* --- Feature Cards --- */
.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
}

.feature-card {
    background: var(--gradient-card);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    padding: 2rem 1.5rem;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.feature-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: rgba(249,112,102,0.2);
}

.feature-icon {
    width: 48px;
    height: 48px;
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.3rem;
    margin-bottom: 1.2rem;
}
.feature-icon.coral { background: var(--coral-light); color: var(--coral); }
.feature-icon.teal { background: var(--teal-light); color: var(--teal); }
.feature-icon.sky { background: #e0f2fe; color: var(--sky); }
.feature-icon.amber { background: #fef3c7; color: var(--amber); }

.feature-card h3 { margin-bottom: 0.5rem; }
.feature-card p { color: var(--muted); font-size: 0.95rem; }

/* --- Blog / Content Cards --- */
.content-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
}

.content-card {
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    overflow: hidden;
    transition: all 0.3s ease;
}

.content-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

.content-card-img {
    height: 180px;
    background: var(--gradient-hero);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5rem;
}

.content-card-body {
    padding: 1.5rem;
}

.content-card-tag {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    padding: 0.2rem 0.6rem;
    border-radius: 999px;
    margin-bottom: 0.8rem;
}
.content-card-tag.coral { background: var(--coral-light); color: var(--coral-dark); }
.content-card-tag.teal { background: var(--teal-light); color: var(--teal-dark); }

.content-card-body h3 {
    font-size: 1.1rem;
    margin-bottom: 0.5rem;
}

.content-card-body p {
    color: var(--muted);
    font-size: 0.9rem;
    margin-bottom: 1rem;
}

.content-card-meta {
    font-size: 0.82rem;
    color: var(--muted);
}

/* --- Newsletter CTA --- */
.newsletter-section {
    background: var(--gradient-hero);
    border-radius: var(--radius-xl);
    padding: 3.5rem;
    text-align: center;
    border: 1px solid var(--line);
    box-shadow: var(--shadow-glow);
    position: relative;
    overflow: hidden;
}

.newsletter-section::before {
    content: '';
    position: absolute;
    top: -50%;
    left: 50%;
    transform: translateX(-50%);
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(249,112,102,0.06) 0%, transparent 70%);
    border-radius: 50%;
}

.newsletter-section h2 { margin-bottom: 0.5rem; position: relative; }
.newsletter-section p { color: var(--muted); margin-bottom: 1.5rem; position: relative; max-width: 50ch; margin-left: auto; margin-right: auto; }

.newsletter-form {
    display: flex;
    gap: 0.5rem;
    max-width: 480px;
    margin: 0 auto;
    position: relative;
}

.newsletter-form input[type="email"] {
    flex: 1;
    padding: 0.85rem 1.2rem;
    border: 1.5px solid var(--line);
    border-radius: 999px;
    font-size: 0.95rem;
    background: var(--surface);
    color: var(--ink);
    outline: none;
    font-family: inherit;
    transition: border-color 0.2s;
}
.newsletter-form input[type="email"]:focus {
    border-color: var(--coral);
}

.newsletter-form button {
    padding: 0.85rem 1.6rem;
    background: var(--gradient-cta);
    color: #fff;
    border: none;
    border-radius: 999px;
    font-weight: 600;
    font-size: 0.95rem;
    cursor: pointer;
    transition: all 0.25s;
    white-space: nowrap;
    font-family: inherit;
}
.newsletter-form button:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 14px rgba(249,112,102,0.3);
}

.newsletter-note {
    font-size: 0.8rem;
    color: var(--muted);
    margin-top: 0.8rem;
    position: relative;
}

/* --- Testimonials / Social Proof --- */
.proof-section { background: var(--surface); }

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

.proof-card {
    padding: 2rem;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: var(--bg);
}

.proof-card .stars {
    color: var(--amber);
    margin-bottom: 0.8rem;
    font-size: 1rem;
}

.proof-card blockquote {
    font-style: italic;
    color: var(--ink-light);
    margin-bottom: 1rem;
    line-height: 1.7;
    font-size: 0.95rem;
}

.proof-card .attribution {
    font-weight: 600;
    font-size: 0.9rem;
}

.proof-card .role {
    color: var(--muted);
    font-size: 0.82rem;
}

/* --- Stats Row --- */
.stats-row {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
    text-align: center;
    padding: 2rem 0;
}

.stat-item h3 {
    font-size: 2.2rem;
    font-weight: 800;
    background: var(--gradient-cta);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 0.3rem;
}

.stat-item p {
    font-size: 0.88rem;
    color: var(--muted);
    font-weight: 500;
}

/* --- Footer --- */
footer {
    background: var(--ink);
    color: rgba(255,255,255,0.7);
    padding: 4rem 0 2rem;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr 1fr;
    gap: 2rem;
    margin-bottom: 3rem;
}

.footer-brand {
    font-family: 'Space Grotesk', sans-serif;
    font-weight: 700;
    font-size: 1.3rem;
    color: #fff;
    margin-bottom: 0.8rem;
}
.footer-brand span { color: var(--coral); }

footer p { font-size: 0.92rem; line-height: 1.7; }

footer h4 {
    color: #fff;
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 1rem;
}

.footer-links {
    list-style: none;
}
.footer-links li { margin-bottom: 0.5rem; }
.footer-links a {
    color: rgba(255,255,255,0.6);
    font-size: 0.9rem;
    transition: color 0.2s;
}
.footer-links a:hover { color: var(--coral); }

.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.1);
    padding-top: 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.85rem;
}

.footer-social { display: flex; gap: 1rem; }
.footer-social a {
    color: rgba(255,255,255,0.5);
    font-size: 1.1rem;
    transition: color 0.2s;
}
.footer-social a:hover { color: var(--coral); }

/* --- Responsive --- */
@media (max-width: 900px) {
    .hero-grid { grid-template-columns: 1fr; }
    .hero-visual { display: none; }
    .features-grid, .content-grid, .proof-grid { grid-template-columns: 1fr; }
    .stats-row { grid-template-columns: repeat(2, 1fr); gap: 1rem; }
    .footer-grid { grid-template-columns: 1fr 1fr; }
    .nav-links { display: none; }
    .menu-toggle { display: block; }
    .nav-links.open {
        display: flex;
        flex-direction: column;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--surface);
        border-bottom: 1px solid var(--line);
        padding: 1rem;
        box-shadow: var(--shadow-md);
    }
    .nav-links.open a { padding: 0.8rem 1rem; }
    .newsletter-section { padding: 2.5rem 1.5rem; }
    .newsletter-form { flex-direction: column; }
    section { padding: 3.5rem 0; }
}

@media (max-width: 600px) {
    .footer-grid { grid-template-columns: 1fr; }
    .footer-bottom { flex-direction: column; gap: 1rem; text-align: center; }
    .hero { padding: 3.5rem 0 2.5rem; }
}

/* --- Page Specific: About --- */
.page-hero {
    background: var(--gradient-hero);
    padding: 4rem 0 3rem;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.page-hero h1 { margin-bottom: 0.8rem; }
.page-hero p { color: var(--muted); font-size: 1.1rem; max-width: 60ch; margin: 0 auto; }

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: center;
}

.about-photo {
    border-radius: var(--radius-xl);
    overflow: hidden;
    aspect-ratio: 4/5;
    background: var(--gradient-hero);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 4rem;
    border: 1px solid var(--line);
}

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

.value-card {
    padding: 1.5rem;
    border-radius: var(--radius);
    border: 1px solid var(--line);
    background: var(--surface);
}

.value-card h4 { margin-bottom: 0.4rem; }
.value-card p { color: var(--muted); font-size: 0.92rem; }

/* --- Page Specific: Blog --- */
.blog-featured {
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: var(--radius-xl);
    overflow: hidden;
    display: grid;
    grid-template-columns: 1fr 1fr;
    margin-bottom: 3rem;
}

.blog-featured-img {
    background: var(--gradient-hero);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 4rem;
    min-height: 300px;
}

.blog-featured-body {
    padding: 2.5rem;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.blog-featured-body h2 { font-size: 1.6rem; margin-bottom: 0.8rem; }
.blog-featured-body p { color: var(--muted); margin-bottom: 1.5rem; }

/* --- Page Specific: Contact --- */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
}

.contact-form { display: flex; flex-direction: column; gap: 1.2rem; }

.form-group label {
    display: block;
    font-weight: 600;
    font-size: 0.88rem;
    margin-bottom: 0.4rem;
    color: var(--ink-light);
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 0.8rem 1rem;
    border: 1.5px solid var(--line);
    border-radius: var(--radius-sm);
    font-size: 0.95rem;
    font-family: inherit;
    background: var(--surface);
    color: var(--ink);
    outline: none;
    transition: border-color 0.2s;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    border-color: var(--coral);
}

.form-group textarea { resize: vertical; min-height: 120px; }

.contact-info-cards { display: flex; flex-direction: column; gap: 1rem; }

.contact-info-card {
    padding: 1.5rem;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: var(--surface);
    display: flex;
    gap: 1rem;
    align-items: flex-start;
}

.contact-info-icon {
    width: 44px;
    height: 44px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    flex-shrink: 0;
}

/* --- Newsletter page specific --- */
.newsletter-page-hero {
    background: var(--gradient-hero);
    padding: 4rem 0;
    text-align: center;
}

.past-issues {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
}

.issue-card {
    padding: 1.5rem;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: var(--surface);
    transition: all 0.3s;
}
.issue-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.issue-card h3 { font-size: 1.05rem; margin-bottom: 0.4rem; }
.issue-card p { color: var(--muted); font-size: 0.9rem; margin-bottom: 0.8rem; }
.issue-card .date { font-size: 0.8rem; color: var(--muted); }

/* --- Resources page --- */
.resource-categories {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
    justify-content: center;
    margin-bottom: 2rem;
}

.resource-filter {
    padding: 0.5rem 1.2rem;
    border-radius: 999px;
    border: 1.5px solid var(--line);
    background: var(--surface);
    font-weight: 500;
    font-size: 0.88rem;
    cursor: pointer;
    transition: all 0.2s;
    font-family: inherit;
    color: var(--ink-light);
}
.resource-filter:hover, .resource-filter.active {
    border-color: var(--coral);
    color: var(--coral);
    background: var(--coral-light);
}

/* --- Utility --- */
.section-divider {
    width: 60px;
    height: 3px;
    background: var(--gradient-cta);
    border-radius: 999px;
    margin: 0 auto 1.5rem;
}

.badge {
    display: inline-block;
    padding: 0.2rem 0.7rem;
    border-radius: 999px;
    font-size: 0.75rem;
    font-weight: 600;
}
.badge-coral { background: var(--coral-light); color: var(--coral-dark); }
.badge-teal { background: var(--teal-light); color: var(--teal-dark); }

@media (max-width: 900px) {
    .blog-featured { grid-template-columns: 1fr; }
    .contact-grid { grid-template-columns: 1fr; }
    .about-grid { grid-template-columns: 1fr; }
    .values-grid { grid-template-columns: 1fr; }
    .past-issues { grid-template-columns: 1fr; }
}