/* ===== Sonoran Glass v3 — Design System ===== */
/* Typography-driven. Desert palette. Restraint over decoration. */

:root {
    /* ── Backgrounds ── */
    --color-bg: #FFFFFF;
    --color-surface: #F5F5F7;
    --color-card: #F5F5F7;
    --color-card-hover: #EBEBED;

    /* ── Text ── */
    --color-text: #1D1D1F;
    --color-text-secondary: #6E6E73;
    --color-text-tertiary: #86868B;

    /* ── Brand: Desert Sky Blue ── */
    --color-accent: #3478F6;
    --color-accent-hover: #2563EB;
    --color-accent-text: #2C6FE0;
    --color-accent-light: #6da4e8;
    --color-accent-muted: rgba(52, 120, 246, 0.08);

    /* ── Accent: Sand Gold (max 1 use per page) ── */
    --color-sand: #C9A96E;

    /* ── Semantic ── */
    --color-success: #248A3D;
    --color-success-bg: rgba(52, 199, 89, 0.12);
    --color-warning: #B25000;
    --color-warning-bg: rgba(255, 159, 10, 0.12);
    --color-border: #E8E8ED;
    --color-border-hover: #D2D2D7;

    /* ── Typography ── */
    --font-family: 'Instrument Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
    --font-mono: 'JetBrains Mono', 'SF Mono', 'Fira Code', monospace;

    /* ── Layout ── */
    --max-width: 980px;
    --max-width-text: 680px;
    --max-width-wide: 1120px;
    --nav-height: 52px;

    /* ── Spacing ── */
    --section-padding: 80px 24px;

    /* ── Transitions ── */
    --transition: 0.2s ease;

    /* ── Radius ── */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-xl: 28px;
    --radius-full: 9999px;
}

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

html {
    scroll-behavior: smooth;
    scroll-padding-top: 60px;
}

body {
    font-family: var(--font-family);
    font-size: 1.0625rem;
    background-color: var(--color-bg);
    color: var(--color-text);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

a:hover {
    color: var(--color-accent-hover);
}

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

ul {
    list-style: none;
}

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

/* ===== Navigation ===== */
#header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    height: var(--nav-height);
    display: flex;
    align-items: center;
    background: rgba(255, 255, 255, 0.72);
    backdrop-filter: saturate(180%) blur(20px);
    -webkit-backdrop-filter: saturate(180%) blur(20px);
    border-bottom: 0.5px solid rgba(0, 0, 0, 0.08);
    transition: background-color var(--transition);
}

#header.scrolled {
    background: rgba(255, 255, 255, 0.88);
}

#header nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    max-width: 1080px;
    margin: 0 auto;
    padding: 0 24px;
}

.nav-logo {
    font-size: 1rem;
    font-weight: 700;
    color: var(--color-text) !important;
    letter-spacing: -0.01em;
    flex-shrink: 0;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 4px;
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
}

.nav-links a {
    color: var(--color-text);
    font-size: 0.8125rem;
    font-weight: 400;
    padding: 6px 14px;
    border-radius: var(--radius-full);
    transition: opacity var(--transition);
    opacity: 0.65;
}

.nav-links a:hover {
    opacity: 1;
    color: var(--color-text);
}

.nav-links a.nav-active {
    opacity: 1;
    font-weight: 600;
    color: var(--color-text);
    background-color: transparent;
}

.nav-cta {
    padding: 8px 20px;
    background-color: #f97316;
    color: #fff !important;
    border-radius: var(--radius-full);
    font-size: 0.8125rem;
    font-weight: 600;
    transition: background-color var(--transition);
    white-space: nowrap;
    flex-shrink: 0;
}

.nav-cta:hover {
    background-color: #ea580c;
    color: #fff !important;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
}

.nav-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background-color: var(--color-text);
    transition: transform var(--transition), opacity var(--transition);
}

/* ===== Hero ===== */
#hero {
    padding: 120px 24px 64px;
    background-color: var(--color-bg);
    position: relative;
}

.hero-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: 32px;
}

.hero-text {
    max-width: var(--max-width-text);
}

.hero-kicker {
    font-size: clamp(0.875rem, 1.5vw, 1rem);
    font-weight: 600;
    color: var(--color-sand);
    letter-spacing: 0.04em;
    text-transform: uppercase;
    margin-bottom: 16px;
    line-height: 1.3;
}

#hero h1 {
    font-size: clamp(2.5rem, 6vw, 4.5rem);
    font-weight: 700;
    margin-bottom: 12px;
    letter-spacing: -0.03em;
    line-height: 1.05;
}

.hero-sub {
    font-size: clamp(1.0625rem, 2vw, 1.375rem);
    color: var(--color-text-secondary);
    line-height: 1.7;
    margin-bottom: 32px;
    max-width: 54ch;
    margin-left: auto;
    margin-right: auto;
}

.hero-actions {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
}

.hero-secondary-link {
    color: var(--color-text-secondary);
    font-size: 0.9rem;
    font-weight: 500;
    transition: color var(--transition);
    display: inline-flex;
    align-items: center;
    padding-top: 4px;
}

.hero-secondary-link:hover {
    color: var(--color-text);
}

.hero-headshot-wrap {
    flex-shrink: 0;
}

.hero-headshot {
    width: 200px;
    height: 200px;
    border-radius: 50%;
    object-fit: cover;
    border: none;
    box-shadow: 0 4px 24px rgba(0, 0, 0, 0.08);
}

/* ===== Featured In (writing page marquee) ===== */
@keyframes featured-in-scroll {
    0% { transform: translateX(0); }
    100% { transform: translateX(-50%); }
}

.featured-in {
    padding: 20px 0;
    background-color: var(--color-surface);
    overflow: hidden;
    border-bottom: 1px solid var(--color-border);
    text-align: center;
    position: relative;
    mask-image: linear-gradient(to right, transparent, black 60px, black calc(100% - 60px), transparent);
    -webkit-mask-image: linear-gradient(to right, transparent, black 60px, black calc(100% - 60px), transparent);
}

.featured-in-label {
    font-size: 0.65rem;
    font-weight: 700;
    color: var(--color-text-secondary);
    letter-spacing: 0.14em;
    text-transform: uppercase;
    margin-bottom: 12px;
    opacity: 0.7;
}

.featured-in-track {
    display: flex;
    align-items: center;
    gap: 48px;
    width: max-content;
    animation: featured-in-scroll 30s linear infinite;
}

.featured-in:hover .featured-in-track {
    animation-play-state: paused;
}

.featured-in-track img {
    display: inline-block;
    flex-shrink: 0;
    max-height: 28px;
    max-width: 120px;
    width: auto;
    height: auto;
    object-fit: contain;
    filter: grayscale(100%) contrast(1.3);
    mix-blend-mode: multiply;
    opacity: 0.5;
    transition: opacity 0.3s ease, transform 0.3s ease;
}

.featured-in-track img:hover {
    opacity: 0.85;
    transform: scale(1.1);
}

.featured-in-track img.logo-invert {
    filter: invert(1) grayscale(100%) contrast(1.3);
}

/* ===== Social Proof Bar ===== */
.social-proof-bar {
    padding: 36px 0;
    background-color: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
}

.social-proof-inner {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 40px;
    flex-wrap: wrap;
}

.social-proof-stat {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
    color: inherit;
    transition: color var(--transition);
}

.social-proof-stat:hover {
    color: var(--color-accent);
}

.social-proof-stat .stat-number {
    font-size: 1.35rem;
    font-weight: 700;
    color: var(--color-text);
}

.social-proof-stat .stat-label {
    font-size: 0.8rem;
    color: var(--color-text-tertiary);
    text-transform: uppercase;
    letter-spacing: 0.04em;
    font-weight: 500;
}

.social-proof-stat svg {
    width: 20px;
    height: 20px;
    color: var(--color-text-tertiary);
    flex-shrink: 0;
}

.social-proof-divider {
    width: 1px;
    height: 32px;
    background-color: var(--color-border);
}

/* ===== Logo Bar (scrolling marquee) ===== */
@keyframes logo-scroll {
    0% { transform: translateX(0); }
    100% { transform: translateX(-50%); }
}

.logo-bar {
    padding: 24px 0;
    background-color: var(--color-bg);
    overflow: hidden;
    border-bottom: 1px solid var(--color-border);
    mask-image: linear-gradient(to right, transparent, black 80px, black calc(100% - 80px), transparent);
    -webkit-mask-image: linear-gradient(to right, transparent, black 80px, black calc(100% - 80px), transparent);
}

.logo-bar-track {
    display: flex;
    align-items: center;
    gap: 48px;
    width: max-content;
    animation: logo-scroll 40s linear infinite;
}

.logo-bar:hover .logo-bar-track {
    animation-play-state: paused;
}

.logo-bar-item {
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    height: 32px;
    padding: 4px 8px;
    border-radius: var(--radius-sm);
    transition: box-shadow 0.3s ease, background-color 0.3s ease;
}

.logo-bar-item:hover {
    box-shadow: 0 0 16px rgba(52, 120, 246, 0.35), 0 0 32px rgba(52, 120, 246, 0.15);
}

.logo-bar-item img {
    max-height: 32px;
    max-width: 120px;
    width: auto;
    height: auto;
    object-fit: contain;
    filter: grayscale(100%) contrast(1.2);
    mix-blend-mode: multiply;
    opacity: 0.4;
    transition: filter 0.3s ease, opacity 0.3s ease, transform 0.3s ease;
}

.logo-bar-item:hover img {
    filter: grayscale(100%) contrast(2);
    opacity: 0.9;
    transform: scale(1.1);
}

/* ===== LinkedIn Button (blog page) ===== */
.libutton {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 8px 16px;
    text-decoration: none !important;
    color: #fff !important;
    width: 200px;
    height: 32px;
    border-radius: 16px;
    background-color: #0A66C2;
    font-family: var(--font-family);
    font-size: 0.8rem;
    font-weight: 600;
    transition: background-color var(--transition);
}

.libutton:hover {
    background-color: #004182;
}

.hero-libutton {
    width: auto;
    height: auto;
    padding: 12px 28px;
    font-size: 1.0625rem;
    line-height: 1;
    border: 1.5px solid transparent;
    border-radius: var(--radius-full);
    gap: 8px;
}

/* ===== Text Link ===== */
.text-link {
    color: var(--color-text-secondary);
    font-size: 0.9rem;
    font-weight: 600;
    transition: color var(--transition);
}

.text-link:hover {
    color: var(--color-accent);
}

/* ===== Buttons ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 28px;
    background-color: var(--color-accent);
    color: #fff !important;
    border-radius: var(--radius-full);
    font-weight: 600;
    font-size: 1.0625rem;
    line-height: 1;
    transition: background-color var(--transition);
    border: 1.5px solid transparent;
    cursor: pointer;
    text-decoration: none;
    font-family: var(--font-family);
}

.btn:hover {
    background-color: var(--color-accent-hover);
    color: #fff !important;
}

.btn-orange {
    background-color: #f97316;
}

.btn-orange:hover {
    background-color: #ea580c;
}

.btn-outline {
    background-color: transparent;
    color: var(--color-accent) !important;
    border-color: var(--color-accent);
}

.btn-outline:hover {
    background-color: var(--color-accent);
    color: #fff !important;
}

/* ===== Section Titles ===== */
.section-title {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 700;
    margin-bottom: 12px;
    letter-spacing: -0.025em;
    color: var(--color-text);
    line-height: 1.1;
    text-align: center;
}

section {
    padding: var(--section-padding);
}

.section-subtitle {
    color: var(--color-text-secondary);
    font-size: clamp(1.0625rem, 2vw, 1.25rem);
    margin-bottom: 32px;
    line-height: 1.5;
    text-align: center;
}

.section-cta {
    text-align: center;
    margin-top: 32px;
}

/* ===== About ===== */
.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 48px;
    margin-bottom: 48px;
}

.about-text p {
    color: var(--color-text-secondary);
    margin-bottom: 16px;
    font-size: 1.05rem;
    line-height: 1.75;
}

.about-highlights {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
}

.highlight-card {
    background-color: var(--color-card);
    border: none;
    border-radius: var(--radius-lg);
    padding: 20px 16px;
    text-align: center;
    text-decoration: none;
    color: inherit;
    display: flex;
    flex-direction: column;
    align-items: center;
    transition: background-color var(--transition);
}

.highlight-card:hover {
    background-color: var(--color-card-hover);
    color: inherit;
}

.highlight-number {
    display: block;
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--color-accent);
    margin-bottom: 4px;
}

.highlight-label {
    font-size: 0.8rem;
    color: var(--color-text-secondary);
}

/* ===== Experience Timeline ===== */
.timeline {
    position: relative;
    padding-left: 48px;
    margin-bottom: 48px;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 15px;
    top: 8px;
    bottom: 8px;
    width: 2px;
    background-color: var(--color-border);
}

.timeline-item {
    position: relative;
    margin-bottom: 40px;
}

.timeline-item:last-child {
    margin-bottom: 0;
}

.timeline-dot {
    position: absolute;
    left: -40px;
    top: 6px;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background-color: var(--color-accent);
    border: 3px solid var(--color-surface);
    box-shadow: 0 0 0 1px var(--color-border);
}

.timeline-logo {
    position: absolute;
    left: -48px;
    top: 0px;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background-color: #ffffff;
    border: 2px solid var(--color-border);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    flex-shrink: 0;
    transition: transform 0.2s ease, border-color 0.2s ease;
}

.timeline-item:hover .timeline-logo {
    transform: scale(1.15);
    border-color: var(--color-accent);
}

.timeline-logo img {
    width: 20px;
    height: 20px;
    object-fit: contain;
}

.timeline-content h3 {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 4px;
    color: var(--color-text);
}

.timeline-role {
    color: var(--color-accent);
    font-weight: 600;
    margin-bottom: 4px;
}

.timeline-date {
    color: var(--color-text-secondary);
    font-size: 0.875rem;
    margin-bottom: 8px;
}

.timeline-content > p:last-child {
    color: var(--color-text-secondary);
    line-height: 1.7;
}

.education {
    background-color: var(--color-card);
    border: none;
    border-radius: var(--radius-lg);
    padding: 32px;
    margin-bottom: 16px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.education:last-child {
    margin-bottom: 0;
}

.education h3 {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 12px;
    color: var(--color-text);
}

.education p {
    color: var(--color-text-secondary);
    margin-bottom: 8px;
}

.education-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.education-list li {
    color: var(--color-text-secondary);
    padding: 14px 0;
    border-bottom: 1px solid var(--color-border);
    display: flex;
    align-items: center;
    gap: 14px;
    font-size: 0.95rem;
    line-height: 1.5;
}

.education-list li::before {
    content: '';
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background-color: var(--color-accent);
    flex-shrink: 0;
}

.education-list li:last-child {
    border-bottom: none;
}

.education-extras {
    font-size: 0.9rem;
    margin-top: 12px;
}

/* ===== Cards (Books, Newsletters, Projects) ===== */
.card-grid {
    display: grid;
    gap: 24px;
}

.books-grid {
    grid-template-columns: repeat(2, 1fr);
}

.newsletters-grid {
    grid-template-columns: repeat(2, 1fr);
}

.projects-grid {
    grid-template-columns: repeat(3, 1fr);
}

.card {
    background-color: var(--color-card);
    border: none;
    border-radius: var(--radius-lg);
    padding: 24px;
    transition: background-color var(--transition), transform var(--transition), box-shadow var(--transition);
    display: flex;
    flex-direction: column;
}

.card:hover {
    background-color: var(--color-card-hover);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.04);
}

/* Light section backgrounds */
.section-light {
    background-color: var(--color-surface);
}

/* Cards on light/surface backgrounds should be white */
.section-light .card {
    background-color: #FFFFFF;
}
.section-light .card:hover {
    background-color: #F9F9FB;
}

.card h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--color-text);
}

.card p {
    color: var(--color-text-secondary);
    font-size: 1rem;
    line-height: 1.7;
    margin-bottom: 12px;
}

.card-meta {
    font-size: 0.85rem;
    color: var(--color-text-tertiary);
    margin-bottom: 8px;
}

.card-badge {
    display: inline-block;
    padding: 4px 12px;
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 16px;
    width: fit-content;
}

.card-badge.published {
    background-color: var(--color-success-bg);
    color: var(--color-success);
}

.card-badge.in-progress {
    background-color: var(--color-warning-bg);
    color: var(--color-warning);
}

.card-badge.free {
    background-color: var(--color-accent-muted);
    color: var(--color-accent);
}

.card-link {
    margin-top: auto;
    font-weight: 600;
    font-size: 0.9rem;
    color: var(--color-accent);
    display: inline-flex;
    align-items: center;
    gap: 4px;
    transition: gap var(--transition), color var(--transition);
}

.card:hover .card-link {
    gap: 8px;
}

.card-logo {
    width: 100%;
    max-height: 160px;
    object-fit: cover;
    border-radius: var(--radius-sm);
    margin-bottom: 16px;
}

.card-cover {
    width: 100%;
    max-height: 280px;
    object-fit: contain;
    border-radius: var(--radius-sm);
    margin-bottom: 16px;
}

.card-publisher-logo {
    width: 48px;
    height: 48px;
    object-fit: contain;
    margin-bottom: 12px;
    opacity: 0.85;
}

.card-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 16px;
}

.tag {
    display: inline-block;
    padding: 4px 10px;
    background-color: var(--color-accent-muted);
    color: var(--color-accent);
    border-radius: var(--radius-sm);
    font-size: 0.8rem;
    font-weight: 500;
}

/* ===== Featured Work Grid (homepage) ===== */
.featured-grid {
    grid-template-columns: repeat(3, 1fr);
}

.featured-video-section {
    background-color: var(--color-surface);
}

.featured-work-section {
    background-color: var(--color-bg);
}

.featured-work-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.fw-card {
    background-color: var(--color-card);
    border: none;
    border-radius: var(--radius-lg);
    padding: 24px;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    text-decoration: none;
    color: var(--color-text);
    transition: background-color var(--transition), transform var(--transition), box-shadow var(--transition);
}

.fw-card:hover {
    background-color: var(--color-card-hover);
    color: var(--color-text);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.04);
}

.fw-card-cover {
    width: 100%;
    max-height: 200px;
    object-fit: contain;
    border-radius: var(--radius-sm);
    margin-bottom: 16px;
}

.fw-card-icon {
    width: 48px;
    height: 48px;
    margin-bottom: 16px;
}

.fw-card-badge {
    display: inline-block;
    padding: 4px 12px;
    border-radius: var(--radius-full);
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    margin-bottom: 16px;
    width: fit-content;
}

.fw-card-badge.published {
    background-color: var(--color-success-bg);
    color: var(--color-success);
}

.fw-card-badge.learners {
    background-color: rgba(59, 160, 255, 0.12);
    color: #3ba0ff;
}

.fw-card-badge.keynotes {
    background-color: var(--color-accent-muted);
    color: var(--color-accent);
}

.fw-card h3 {
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: 8px;
    line-height: 1.35;
}

.fw-card p {
    font-size: 0.95rem;
    color: var(--color-text-secondary);
    line-height: 1.6;
    margin-bottom: 16px;
    flex: 1;
}

.fw-card-link {
    font-weight: 600;
    font-size: 0.875rem;
    color: var(--color-accent);
    display: inline-flex;
    align-items: center;
    gap: 4px;
    transition: gap var(--transition);
    margin-top: auto;
}

.fw-card:hover .fw-card-link {
    gap: 8px;
}

/* ===== YouTube Carousel ===== */
.carousel-section {
    margin-bottom: 40px;
}

.carousel-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 16px;
}

.carousel-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--color-text);
}

.carousel-nav {
    display: flex;
    gap: 8px;
}

.carousel-btn {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    border: 1px solid var(--color-border);
    background-color: var(--color-bg);
    color: var(--color-text-secondary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: border-color var(--transition), color var(--transition), background-color var(--transition);
}

.carousel-btn:hover {
    border-color: var(--color-accent);
    color: var(--color-accent);
    background-color: var(--color-accent-muted);
}

.carousel-btn svg {
    width: 18px;
    height: 18px;
}

.carousel-track {
    display: flex;
    gap: 16px;
    overflow-x: auto;
    scroll-snap-type: x mandatory;
    scroll-behavior: smooth;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
    padding-bottom: 4px;
}

.carousel-track::-webkit-scrollbar {
    display: none;
}

.carousel-loading,
.carousel-empty {
    color: var(--color-text-tertiary);
    font-size: 0.9rem;
    padding: 32px 0;
}

/* YouTube Video Card */
.yt-card {
    flex: 0 0 300px;
    scroll-snap-align: start;
    background-color: var(--color-bg);
    border: none;
    border-radius: var(--radius-lg);
    overflow: hidden;
    text-decoration: none;
    color: inherit;
    transition: background-color var(--transition), transform var(--transition), box-shadow var(--transition);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.04);
}

.yt-card:hover {
    background-color: #F9F9FB;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.04);
}

.yt-card-thumb {
    position: relative;
    width: 100%;
    aspect-ratio: 16 / 9;
    overflow: hidden;
    background-color: var(--color-surface);
}

.yt-card-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.yt-card:hover .yt-card-thumb img {
    transform: scale(1.05);
}

.yt-play-icon {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 48px;
    height: 48px;
    background-color: rgba(0, 0, 0, 0.6);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.2s ease;
}

.yt-card:hover .yt-play-icon {
    opacity: 1;
}

.yt-play-icon svg {
    width: 24px;
    height: 24px;
    color: #fff;
    margin-left: 2px;
}

.yt-card-info {
    padding: 12px 14px;
}

.yt-card-info h4 {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--color-text);
    line-height: 1.35;
    margin-bottom: 4px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.yt-card-views {
    font-size: 0.8rem;
    color: var(--color-text-tertiary);
}

/* Shorts-specific card */
.yt-card-short {
    flex: 0 0 180px;
}

.yt-card-short .yt-card-thumb,
.yt-thumb-short {
    aspect-ratio: 9 / 16;
}

.yt-card-short .yt-card-info h4 {
    font-size: 0.8rem;
    -webkit-line-clamp: 2;
}

.yt-card-short .yt-card-views {
    font-size: 0.75rem;
}

.carousel-track-shorts {
    max-height: 400px;
}

.carousel-track-shorts .yt-card-short .yt-card-thumb {
    aspect-ratio: 9 / 14;
}

/* ===== Newsletters ===== */
#newsletters {
    background-color: var(--color-surface);
}

/* ===== Subscribe Embed ===== */
.subscribe-embed {
    margin-top: 48px;
    background-color: var(--color-bg);
    border: none;
    border-radius: var(--radius-lg);
    padding: 32px;
    text-align: center;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.subscribe-embed h3 {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 8px;
    color: var(--color-text);
}

.subscribe-embed p {
    color: var(--color-text-secondary);
    font-size: 0.95rem;
    margin-bottom: 16px;
}

/* ===== Speaking & Events ===== */
.speaking-intro {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: 24px;
    margin-bottom: 56px;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.speaking-desc {
    color: var(--color-text-secondary);
    font-size: 1.1rem;
    line-height: 1.8;
    margin: 0;
}

.speaking-awards {
    display: flex;
    gap: 40px;
    flex-wrap: wrap;
    justify-content: center;
    margin-bottom: 8px;
}

.award {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
}

.award-icon {
    width: 56px;
    height: 70px;
    filter: drop-shadow(0 2px 6px rgba(180, 130, 20, 0.35));
}

.award-label {
    font-size: 0.85rem;
    font-weight: 600;
    color: #B45309;
    letter-spacing: 0.02em;
}

.award-year {
    font-size: 1.3rem;
    font-weight: 700;
    color: #92400E;
}

.speaking-cta {
    margin-top: 4px;
}

/* ===== Events (Speaking page) ===== */
#speaking {
    background-color: #1D1D1F;
    color: #F5F5F7;
}

#speaking .section-title {
    color: #F5F5F7;
}

.events-layout {
    display: grid;
    grid-template-columns: 500px 1fr;
    gap: 48px;
    align-items: start;
}

.events-globe-panel {
    position: sticky;
    top: 100px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
}

#events-globe {
    width: 100%;
    max-width: 500px;
    aspect-ratio: 1;
    border-radius: 50%;
    cursor: grab;
}

#events-globe:active {
    cursor: grabbing;
}

.globe-label {
    font-size: 0.8rem;
    color: #86868B;
    opacity: 0.6;
    letter-spacing: 0.04em;
    text-transform: uppercase;
}

.events-list-panel {
    padding-top: 8px;
    max-height: 500px;
    overflow-y: auto;
    scrollbar-width: thin;
    scrollbar-color: var(--color-accent) transparent;
}

.events-list-panel::-webkit-scrollbar {
    width: 6px;
}

.events-list-panel::-webkit-scrollbar-track {
    background: transparent;
}

.events-list-panel::-webkit-scrollbar-thumb {
    background-color: var(--color-accent);
    border-radius: 3px;
}

.events-timeline {
    position: relative;
    padding-left: 40px;
}

.events-timeline::before {
    content: '';
    position: absolute;
    left: 7px;
    top: 8px;
    bottom: 8px;
    width: 2px;
    background-color: rgba(255, 255, 255, 0.12);
}

.events-item {
    position: relative;
    margin-bottom: 32px;
    cursor: pointer;
    border-radius: var(--radius-md);
    padding: 12px 16px 12px 0;
    transition: background-color var(--transition);
}

.events-item:last-child {
    margin-bottom: 0;
}

.events-item:hover {
    background-color: rgba(52, 120, 246, 0.06);
}

.events-item.active {
    background-color: rgba(52, 120, 246, 0.10);
}

.events-dot {
    position: absolute;
    left: -40px;
    top: 16px;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background-color: var(--color-accent);
    border: 3px solid #1D1D1F;
    transition: transform var(--transition), box-shadow var(--transition);
}

.events-item:hover .events-dot,
.events-item.active .events-dot {
    transform: scale(1.25);
}

.events-header {
    margin-bottom: 6px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.events-role {
    display: inline-block;
    padding: 3px 10px;
    border-radius: var(--radius-full);
    font-size: 0.72rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.06em;
}

.role-keynote {
    background-color: rgba(52, 120, 246, 0.15);
    color: var(--color-accent-light);
}

.role-speaker {
    background-color: rgba(52, 199, 89, 0.15);
    color: #34C759;
}

.role-sponsor {
    background-color: rgba(255, 159, 10, 0.15);
    color: #FF9F0A;
}

.role-attendee {
    background-color: rgba(142, 142, 147, 0.15);
    color: #8E8E93;
}

.events-status-past {
    display: inline-block;
    padding: 2px 8px;
    border-radius: var(--radius-full);
    font-size: 0.68rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    background-color: rgba(255, 255, 255, 0.08);
    color: #A1A1A6;
}

.events-name {
    font-size: 1.15rem;
    font-weight: 700;
    margin-bottom: 6px;
    color: #F5F5F7;
}

.events-meta {
    font-size: 0.875rem;
    color: #A1A1A6;
    margin-bottom: 10px;
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
}

.events-separator {
    opacity: 0.4;
}

.events-link {
    font-size: 0.875rem;
    font-weight: 600;
}

.events-empty {
    color: #A1A1A6;
    font-size: 1rem;
    padding: 40px 0;
}

/* ===== Contact ===== */
.contact-intro {
    color: var(--color-text-secondary);
    font-size: 1.05rem;
    line-height: 1.7;
    max-width: 600px;
    margin: 0 auto 32px;
}

.contact-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
    max-width: 800px;
    margin: 0 auto;
}

.contact-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    padding: 24px 16px;
    background-color: var(--color-card);
    border: none;
    border-radius: var(--radius-lg);
    color: var(--color-text-secondary) !important;
    transition: background-color var(--transition);
}

.contact-item:hover {
    background-color: var(--color-card-hover);
    color: var(--color-text) !important;
}

.contact-item span {
    font-size: 0.85rem;
    font-weight: 500;
}

.contact-item svg {
    transition: transform 0.2s ease, color 0.2s ease;
}

.contact-item:hover svg {
    transform: scale(1.15);
}

/* Contact form embed */
.contact-form-section {
    text-align: center;
}

.contact-form-embed {
    max-width: 640px;
    margin: 0 auto;
    border-radius: var(--radius-lg);
    overflow: hidden;
    background-color: var(--color-bg);
    border: none;
}

.contact-form-embed iframe {
    display: block;
    min-height: 600px;
}

/* ===== Footer ===== */
footer {
    padding: 64px 0 32px;
    border-top: 1px solid var(--color-border);
    background-color: var(--color-surface);
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 48px;
    margin-bottom: 48px;
}

.footer-logo {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--color-text) !important;
    display: block;
    margin-bottom: 12px;
}

.footer-brand p {
    color: var(--color-text-tertiary);
    font-size: 0.9rem;
    line-height: 1.6;
    max-width: 380px;
}

.footer-links h4 {
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--color-text);
    margin-bottom: 16px;
}

.footer-links ul {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.footer-links a {
    color: var(--color-text-tertiary);
    font-size: 0.9rem;
    transition: color var(--transition);
}

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

.footer-bottom {
    padding-top: 24px;
    border-top: 1px solid var(--color-border);
}

.footer-bottom p {
    color: var(--color-text-tertiary);
    font-size: 0.8rem;
}

/* ===== Page Header (subpage banner) ===== */
.page-header {
    padding: 116px 24px 48px;
    background-color: var(--color-bg);
    position: relative;
}

.page-header h1 {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 700;
    margin-bottom: 8px;
    position: relative;
    color: var(--color-text);
    letter-spacing: -0.025em;
    text-align: center;
}

.page-header p {
    color: var(--color-text-secondary);
    font-size: 1.1rem;
    position: relative;
    max-width: 600px;
    text-align: center;
    margin-left: auto;
    margin-right: auto;
}

/* About page special header */
.page-header--about .about-intro {
    display: flex;
    align-items: center;
    gap: 48px;
}

.page-header--about .about-intro-text {
    flex: 1;
}

.page-header--about h1,
.page-header--about p {
    text-align: left;
    margin-left: 0;
    margin-right: 0;
}

.page-header--about + section {
    padding-top: 24px;
}

.page-header--about .about-headshot {
    width: 160px;
    height: 160px;
    border-radius: 50%;
    object-fit: cover;
    flex-shrink: 0;
    border: none;
    box-shadow: 0 4px 24px rgba(0, 0, 0, 0.08);
}

/* About CTA section */
.about-cta-section {
    background-color: var(--color-bg);
}

.about-cta {
    text-align: center;
    max-width: 600px;
    margin: 0 auto;
    padding: 24px 0;
}

.about-cta h2 {
    font-size: clamp(1.5rem, 3vw, 2rem);
    font-weight: 700;
    margin-bottom: 12px;
    color: var(--color-text);
}

.about-cta p {
    color: var(--color-text-secondary);
    font-size: 1.05rem;
    line-height: 1.7;
    margin-bottom: 28px;
}

.about-cta-actions {
    display: flex;
    gap: 12px;
    justify-content: center;
    flex-wrap: wrap;
}

/* ===== Podcast ===== */
.podcast-banner-section {
    padding: 0 24px 80px;
}

.podcast-banner {
    text-align: center;
    max-width: 640px;
    margin: 0 auto;
    padding: 60px 40px;
    background: var(--color-surface);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
}

.podcast-banner-icon {
    margin-bottom: 24px;
}

.podcast-banner-title {
    font-size: clamp(1.4rem, 3vw, 1.75rem);
    font-weight: 700;
    color: var(--color-text);
    margin-bottom: 8px;
    letter-spacing: -0.02em;
}

.podcast-banner-subtitle {
    font-size: 1.1rem;
    color: var(--color-accent);
    font-weight: 600;
    margin-bottom: 32px;
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

/* ===== Blog ===== */
.blog-controls {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 16px;
    margin-bottom: 40px;
}

.blog-search {
    width: 100%;
    padding: 14px 20px;
    background-color: var(--color-bg);
    border: 1.5px solid var(--color-border);
    border-radius: var(--radius-full);
    color: var(--color-text);
    font-family: var(--font-family);
    font-size: 1rem;
    outline: none;
    transition: border-color var(--transition), box-shadow var(--transition);
}

.blog-search::placeholder {
    color: var(--color-text-tertiary);
}

.blog-search:focus {
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px rgba(52, 120, 246, 0.12);
}

.blog-filters {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    justify-content: center;
}

.blog-filter-pill {
    padding: 8px 18px;
    background-color: var(--color-card);
    border: none;
    border-radius: var(--radius-full);
    font-size: 0.875rem;
    color: var(--color-text-secondary);
    cursor: pointer;
    transition: background-color var(--transition), color var(--transition);
    font-family: var(--font-family);
}

.blog-filter-pill:hover {
    background-color: var(--color-accent-muted);
    color: var(--color-accent);
}

.blog-filter-pill.active {
    background-color: var(--color-accent);
    color: #fff;
}

.blog-filter-pill:focus-visible {
    outline: 2px solid var(--color-accent);
    outline-offset: 2px;
}

.blog-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}

.blog-card {
    background-color: var(--color-card);
    border: none;
    border-radius: var(--radius-lg);
    padding: 24px;
    display: flex;
    flex-direction: column;
    transition: background-color var(--transition), transform var(--transition), box-shadow var(--transition);
    text-decoration: none;
    color: var(--color-text);
}

.blog-card:hover {
    background-color: var(--color-card-hover);
    color: var(--color-text);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.04);
}

.blog-card-header {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 14px;
}

.blog-card-logo {
    width: 22px;
    height: 22px;
    object-fit: contain;
    flex-shrink: 0;
    border-radius: 4px;
}

.blog-card-source {
    display: inline-block;
    padding: 4px 12px;
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    width: fit-content;
    background-color: var(--color-accent-muted);
    color: var(--color-accent);
}

/* Source-specific badge colors (calibrated for light backgrounds) */
.blog-card-source.source-fivetran {
    background-color: rgba(0, 100, 200, 0.08);
    color: #0064C8;
}

.blog-card-source.source-tobiko {
    background-color: rgba(200, 80, 30, 0.08);
    color: #C8501E;
}

.blog-card-source.source-dremio {
    background-color: var(--color-success-bg);
    color: var(--color-success);
}

.blog-card-source.source-medium {
    background-color: rgba(0, 0, 0, 0.06);
    color: #1D1D1F;
}

.blog-card-source.source-linkedin {
    background-color: rgba(10, 102, 194, 0.08);
    color: #0A66C2;
}

.blog-card-source.source-substack {
    background-color: rgba(255, 102, 0, 0.08);
    color: #FF6600;
}

.blog-card-read {
    margin-top: auto;
    padding-top: 12px;
    font-weight: 600;
    font-size: 0.875rem;
    color: var(--color-accent);
    display: inline-flex;
    align-items: center;
    gap: 4px;
    transition: gap var(--transition), color var(--transition);
}

.blog-card:hover .blog-card-read {
    gap: 8px;
}

.pill-count {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 20px;
    height: 20px;
    padding: 0 6px;
    margin-left: 6px;
    border-radius: var(--radius-full);
    font-size: 0.7rem;
    font-weight: 700;
    background-color: rgba(0, 0, 0, 0.05);
    color: var(--color-text-tertiary);
    line-height: 1;
}

.blog-filter-pill.active .pill-count {
    background-color: rgba(255, 255, 255, 0.25);
    color: #fff;
}

.blog-card h3 {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--color-text);
}

.blog-card .blog-date {
    font-size: 0.85rem;
    color: var(--color-text-tertiary);
    margin-bottom: 8px;
}

.blog-card .blog-desc {
    font-size: 1rem;
    color: var(--color-text-secondary);
    line-height: 1.7;
    margin-bottom: 12px;
    flex: 1;
}

.blog-card .blog-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
}

.blog-card .blog-tags span {
    display: inline-block;
    padding: 3px 8px;
    background-color: var(--color-accent-muted);
    color: var(--color-accent);
    border-radius: 6px;
    font-size: 0.75rem;
    font-weight: 500;
}

.blog-empty {
    text-align: center;
    color: var(--color-text-secondary);
    font-size: 1.1rem;
    padding: 60px 0;
}

/* ===== Courses Grid ===== */
.courses-grid {
    grid-template-columns: repeat(3, 1fr);
}

/* ===== Animations ===== */

/* Hero entrance (plays once on load) */
@keyframes hero-fade-up {
    from { opacity: 0; transform: translateY(24px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes hero-scale-in {
    from { opacity: 0; transform: scale(0.9); }
    to { opacity: 1; transform: scale(1); }
}

#hero h1 {
    opacity: 0;
    animation: hero-fade-up 0.7s cubic-bezier(0.16, 1, 0.3, 1) 0.2s forwards;
}

.hero-kicker {
    opacity: 0;
    animation: hero-fade-up 0.7s cubic-bezier(0.16, 1, 0.3, 1) 0.1s forwards;
}

.hero-sub {
    opacity: 0;
    animation: hero-fade-up 0.7s cubic-bezier(0.16, 1, 0.3, 1) 0.35s forwards;
}

.hero-actions {
    opacity: 0;
    animation: hero-fade-up 0.7s cubic-bezier(0.16, 1, 0.3, 1) 0.45s forwards;
}

.hero-headshot-wrap {
    opacity: 0;
    animation: hero-scale-in 0.8s cubic-bezier(0.16, 1, 0.3, 1) 0.3s forwards;
}

.social-proof-bar {
    opacity: 0;
    animation: hero-fade-up 0.6s cubic-bezier(0.16, 1, 0.3, 1) 0.6s forwards;
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
    .hero-kicker, #hero h1, .hero-sub, .hero-actions,
    .hero-headshot-wrap, .social-proof-bar {
        opacity: 1;
        animation: none;
    }
    .logo-bar-track,
    .featured-in-track {
        animation: none;
    }
    html {
        scroll-behavior: auto;
    }
}

/* ===== Dark Section Overrides ===== */
.section-dark {
    background-color: #000000;
    color: #F5F5F7;
}

.section-dark .section-title {
    color: #F5F5F7;
}

.section-dark .section-subtitle {
    color: #A1A1A6;
}

.section-dark .btn {
    background-color: #FFFFFF;
    color: #000000 !important;
}

.section-dark .btn:hover {
    background-color: #E8E8ED;
}

.section-dark .btn-orange {
    background-color: #f97316;
    color: #fff !important;
}

.section-dark .btn-orange:hover {
    background-color: #ea580c;
}

.section-dark .btn-outline {
    background-color: transparent;
    color: #FFFFFF !important;
    border-color: rgba(255, 255, 255, 0.5);
}

.section-dark .btn-outline:hover {
    background-color: #FFFFFF;
    color: #000000 !important;
    border-color: #FFFFFF;
}

.section-dark a {
    color: var(--color-accent-light);
}

/* ===== Responsive ===== */
@media (max-width: 1024px) {
    .books-grid,
    .projects-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .courses-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .contact-grid {
        grid-template-columns: repeat(3, 1fr);
    }

    .featured-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .featured-work-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .events-layout {
        grid-template-columns: 380px 1fr;
        gap: 32px;
    }
}

@media (max-width: 768px) {
    :root {
        --section-padding: 64px 24px;
    }

    /* Mobile Nav */
    .nav-toggle {
        display: flex;
    }

    .nav-links {
        position: fixed;
        top: 0;
        right: -100%;
        width: 280px;
        height: 100vh;
        background-color: #FFFFFF;
        flex-direction: column;
        padding: 80px 32px 32px;
        gap: 8px;
        transition: right 0.35s cubic-bezier(0.32, 0.72, 0, 1);
        box-shadow: -4px 0 20px rgba(0, 0, 0, 0.08);
        z-index: 999;
        left: auto;
        transform: none;
    }

    .nav-links.open {
        right: 0;
    }

    body.nav-open::before {
        content: '';
        position: fixed;
        inset: 0;
        background: rgba(0, 0, 0, 0.3);
        z-index: 998;
    }

    .nav-links a {
        font-size: 1.1rem;
        padding: 10px 16px;
        opacity: 1;
        color: var(--color-text);
    }

    .nav-cta {
        display: none;
    }

    /* Show CTA inside mobile nav */
    .nav-links .nav-cta-mobile {
        display: block;
        text-align: center;
        margin-top: 16px;
        padding: 12px 24px;
        background-color: #f97316;
        color: #fff !important;
        border-radius: var(--radius-full);
        font-weight: 600;
    }

    /* Mobile hamburger animation */
    body.nav-open .nav-toggle span:nth-child(1) {
        transform: translateY(7px) rotate(45deg);
    }
    body.nav-open .nav-toggle span:nth-child(2) {
        opacity: 0;
    }
    body.nav-open .nav-toggle span:nth-child(3) {
        transform: translateY(-7px) rotate(-45deg);
    }

    /* Hero */
    .hero-content {
        flex-direction: column;
        text-align: center;
        gap: 24px;
    }

    .hero-headshot {
        width: 160px;
        height: 160px;
    }

    .hero-actions {
        justify-content: center;
        flex-direction: column;
        align-items: stretch;
        max-width: 280px;
        margin-left: auto;
        margin-right: auto;
    }

    .featured-in-track {
        gap: 36px;
    }

    .featured-in-track img {
        max-height: 22px;
        max-width: 90px;
    }

    .hero-sub {
        max-width: 100%;
    }

    /* Social proof bar */
    .social-proof-inner {
        gap: 16px;
    }

    .social-proof-divider {
        display: none;
    }

    .social-proof-stat .stat-number {
        font-size: 1.1rem;
    }

    /* Logo bar */
    .logo-bar {
        padding: 20px 0;
    }

    .logo-bar-track {
        gap: 36px;
    }

    .logo-bar-item img {
        max-height: 24px;
        max-width: 90px;
    }

    /* About */
    .about-grid {
        grid-template-columns: 1fr;
        gap: 32px;
    }

    .about-highlights {
        grid-template-columns: 1fr 1fr;
    }

    /* About page header */
    .page-header--about .about-intro {
        flex-direction: column-reverse;
        text-align: center;
    }

    .page-header--about .about-headshot {
        width: 120px;
        height: 120px;
    }

    /* Cards */
    .books-grid,
    .newsletters-grid,
    .projects-grid,
    .courses-grid,
    .featured-grid,
    .featured-work-grid {
        grid-template-columns: 1fr;
    }

    .blog-grid {
        grid-template-columns: 1fr;
    }

    /* Contact */
    .contact-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    /* Events */
    .events-layout {
        grid-template-columns: 1fr;
        gap: 32px;
    }

    .events-globe-panel {
        position: static;
        max-width: 320px;
        margin: 0 auto;
    }

    #events-globe {
        max-width: 320px;
    }

    /* Footer */
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 32px;
    }
}

@media (max-width: 600px) {
    .yt-card {
        flex: 0 0 260px;
    }
    .yt-card-short {
        flex: 0 0 150px;
    }
    .carousel-btn {
        display: none;
    }
}

@media (max-width: 480px) {
    .about-highlights {
        grid-template-columns: 1fr;
    }

    .contact-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .social-proof-stat .stat-number {
        font-size: 1rem;
    }

    .social-proof-stat .stat-label {
        font-size: 0.7rem;
    }

    .events-globe-panel {
        display: none;
    }

    .events-timeline {
        padding-left: 28px;
    }

    .events-dot {
        left: -28px;
        width: 12px;
        height: 12px;
    }
}

/* ===== Dark Mode Theme ===== */
html[data-theme="dark"] {
    --color-bg: #111111;
    --color-surface: #1C1C1E;
    --color-card: #1C1C1E;
    --color-card-hover: #2C2C2E;
    --color-text: #F5F5F7;
    --color-text-secondary: #A1A1A6;
    --color-text-tertiary: #86868B;
    --color-border: #38383A;
    --color-border-hover: #48484A;
    --color-success-bg: rgba(52, 199, 89, 0.2);
    --color-warning-bg: rgba(255, 159, 10, 0.2);
}

@media (prefers-color-scheme: dark) {
    html:not([data-theme="light"]) {
        --color-bg: #111111;
        --color-surface: #1C1C1E;
        --color-card: #1C1C1E;
        --color-card-hover: #2C2C2E;
        --color-text: #F5F5F7;
        --color-text-secondary: #A1A1A6;
        --color-text-tertiary: #86868B;
        --color-border: #38383A;
        --color-border-hover: #48484A;
        --color-success-bg: rgba(52, 199, 89, 0.2);
        --color-warning-bg: rgba(255, 159, 10, 0.2);
    }
}

html[data-theme="dark"] #header {
    background: rgba(28, 28, 30, 0.72);
    border-bottom: 0.5px solid rgba(255, 255, 255, 0.08);
}
@media (prefers-color-scheme: dark) {
    html:not([data-theme="light"]) #header {
        background: rgba(28, 28, 30, 0.72);
        border-bottom: 0.5px solid rgba(255, 255, 255, 0.08);
    }
}

html[data-theme="dark"] #header.scrolled {
    background: rgba(28, 28, 30, 0.88);
}
@media (prefers-color-scheme: dark) {
    html:not([data-theme="light"]) #header.scrolled {
        background: rgba(28, 28, 30, 0.88);
    }
}

html[data-theme="dark"] .logo-bar-item img,
html[data-theme="dark"] .featured-in-track img {
    filter: invert(1) grayscale(100%) contrast(1.2) !important;
    mix-blend-mode: screen !important;
    opacity: 0.6;
}
@media (prefers-color-scheme: dark) {
    html:not([data-theme="light"]) .logo-bar-item img,
    html:not([data-theme="light"]) .featured-in-track img {
        filter: invert(1) grayscale(100%) contrast(1.2) !important;
        mix-blend-mode: screen !important;
        opacity: 0.6;
    }
}

html[data-theme="dark"] .nav-logo { color: var(--color-text) !important; }

/* Dark mode mobile nav */
html[data-theme="dark"] .nav-links {
    background-color: var(--color-surface);
    box-shadow: -4px 0 20px rgba(0, 0, 0, 0.3);
}
@media (prefers-color-scheme: dark) {
    html:not([data-theme="light"]) .nav-links {
        background-color: var(--color-surface);
        box-shadow: -4px 0 20px rgba(0, 0, 0, 0.3);
    }
}

/* Theme Toggle Button */
.nav-actions {
    display: flex;
    align-items: center;
    gap: 12px;
}
.theme-toggle {
    background: transparent;
    border: none;
    cursor: pointer;
    color: var(--color-text);
    padding: 8px;
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background-color var(--transition), color var(--transition);
}
.theme-toggle:hover {
    background-color: var(--color-surface);
}
.theme-toggle svg {
    width: 20px;
    height: 20px;
}
.sun-icon { display: block; }
.moon-icon { display: none; }

html[data-theme="dark"] .sun-icon { display: none; }
html[data-theme="dark"] .moon-icon { display: block; }

@media (prefers-color-scheme: dark) {
    html:not([data-theme="light"]) .sun-icon { display: none; }
    html:not([data-theme="light"]) .moon-icon { display: block; }
}

/* ===== Micro-Animations & Scroll Reveal ===== */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease-out, transform 0.8s ease-out, box-shadow 0.3s ease, background-color 0.3s ease;
}
.reveal.active {
    opacity: 1;
    transform: translateY(0);
}
.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }

/* Enhanced Button Hovers */
.btn:hover {
    transform: scale(1.02);
    box-shadow: 0 4px 12px rgba(52, 120, 246, 0.25);
}
.btn-orange:hover {
    box-shadow: 0 4px 12px rgba(249, 115, 22, 0.25);
}