/* ========================================
   CSS Variables & Base Styles
   ======================================== */

:root {
    /* Colors - Bold Tech Palette */
    --color-primary: #6366f1;          /* Indigo - modern, innovative */
    --color-primary-dark: #4f46e5;     /* Deeper indigo for hover */
    --color-primary-light: #eef2ff;    /* Light indigo tint */
    --color-secondary: #1e1b4b;        /* Deep purple-black - headers */
    --color-accent: #f472b6;           /* Pink - vibrant CTAs */
    --color-accent-dark: #ec4899;      /* Deeper pink for hover */
    --color-accent-alt: #06b6d4;       /* Cyan - secondary accent */

    --color-text: #1e1b4b;             /* Deep purple-black - main text */
    --color-text-light: #4b5563;       /* Gray - secondary text */
    --color-text-muted: #6b7280;       /* Light gray - muted text */

    --color-bg: #ffffff;               /* White - main background */
    --color-bg-alt: #faf5ff;           /* Light purple tint - sections */
    --color-bg-dark: #1e1b4b;          /* Deep purple - dark sections */

    --color-border: #e5e7eb;           /* Light border */
    --color-border-light: #f3f4f6;     /* Lighter border */

    /* Gradients */
    --gradient-primary: linear-gradient(135deg, #6366f1 0%, #8b5cf6 50%, #a855f7 100%);
    --gradient-accent: linear-gradient(135deg, #f472b6 0%, #ec4899 100%);
    --gradient-hero: linear-gradient(135deg, #eef2ff 0%, #faf5ff 50%, #fdf4ff 100%);

    /* Typography */
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', monospace;

    /* Spacing */
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;
    --space-3xl: 4rem;
    --space-4xl: 6rem;

    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --radius-full: 9999px;

    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
    --transition-slow: 350ms ease;
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-sans);
    font-size: 1rem;
    line-height: 1.6;
    color: var(--color-text);
    background-color: var(--color-bg);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

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

a:hover {
    color: var(--color-primary-dark);
}

ul {
    list-style: none;
}

/* ========================================
   Layout
   ======================================== */

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-lg);
}

.section-header {
    text-align: center;
    margin-bottom: var(--space-3xl);
}

.section-header .btn-scholar {
    margin-top: var(--space-lg);
}

.section-header h2 {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--color-secondary);
    margin-bottom: var(--space-md);
    background: linear-gradient(135deg, var(--color-secondary) 0%, var(--color-primary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-subtitle {
    font-size: 1.125rem;
    color: var(--color-text-light);
    max-width: 600px;
    margin: 0 auto;
}

/* ========================================
   Buttons
   ======================================== */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    padding: var(--space-sm) var(--space-lg);
    font-family: var(--font-sans);
    font-size: 0.9375rem;
    font-weight: 500;
    text-decoration: none;
    border: 2px solid transparent;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.btn-primary {
    background: var(--gradient-primary);
    color: white;
    border-color: transparent;
    box-shadow: 0 4px 14px rgba(99, 102, 241, 0.4);
}

.btn-primary:hover {
    background: var(--gradient-primary);
    filter: brightness(1.1);
    border-color: transparent;
    color: white;
    box-shadow: 0 6px 20px rgba(99, 102, 241, 0.5);
    transform: translateY(-2px);
}

.btn-secondary {
    background-color: transparent;
    color: var(--color-primary);
    border-color: var(--color-primary);
}

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

.btn-large {
    padding: var(--space-md) var(--space-xl);
    font-size: 1rem;
}

/* ========================================
   Navigation
   ======================================== */

.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background-color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--color-border-light);
    padding: var(--space-md) 0;
}

.navbar .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.navbar .logo {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
}

.navbar .logo .logo-img {
    height: 72px !important;
    width: auto !important;
    max-width: none;
}

.logo-tagline {
    display: flex;
    flex-direction: column;
    line-height: 1.25;
    font-family: 'DM Sans', sans-serif;
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 0.02em;
}

.tagline-probably     { color: #E05C1A; }
.tagline-approximately { color: #5B21B6; }
.tagline-human        { color: #2D7A4F; }

.nav-links {
    display: flex;
    align-items: center;
    gap: var(--space-xl);
}

.nav-links a {
    color: var(--color-text-light);
    font-weight: 500;
    font-size: 0.9375rem;
    transition: color var(--transition-fast);
}

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

.nav-links .btn {
    margin-left: var(--space-md);
}

.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: var(--space-sm);
    background: none;
    border: none;
    cursor: pointer;
}

.mobile-menu-btn span {
    width: 24px;
    height: 2px;
    background-color: var(--color-text);
    transition: var(--transition-fast);
}

/* ========================================
   Hero Section
   ======================================== */

.hero {
    padding: calc(var(--space-4xl) + 80px) 0 var(--space-4xl);
    background: var(--gradient-hero);
    position: relative;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 50%;
    height: 100%;
    background: radial-gradient(circle at 70% 30%, rgba(99, 102, 241, 0.1) 0%, transparent 50%),
                radial-gradient(circle at 90% 80%, rgba(168, 85, 247, 0.08) 0%, transparent 40%);
    pointer-events: none;
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 400px;
    gap: var(--space-3xl);
    align-items: center;
}

.hero-tagline {
    display: inline-block;
    font-size: 0.875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: var(--space-md);
}

.hero h1 {
    font-size: 3.5rem;
    font-weight: 700;
    line-height: 1.1;
    margin-bottom: var(--space-lg);
    letter-spacing: -0.02em;
    background: linear-gradient(135deg, var(--color-secondary) 0%, var(--color-primary) 50%, #8b5cf6 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-description {
    font-size: 1.25rem;
    color: var(--color-text-light);
    line-height: 1.7;
    margin-bottom: var(--space-xl);
}

.hero-description strong {
    color: var(--color-text);
}

.hero-cta {
    display: flex;
    gap: var(--space-md);
    margin-bottom: var(--space-2xl);
}

.hero-stats {
    display: flex;
    gap: var(--space-2xl);
    padding-top: var(--space-xl);
    border-top: 1px solid var(--color-border);
}

.stat {
    display: flex;
    flex-direction: column;
}

.stat-number {
    font-size: 2rem;
    font-weight: 700;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1;
}

.stat-label {
    font-size: 0.875rem;
    color: var(--color-text-muted);
    margin-top: var(--space-xs);
}

.hero-image {
    display: flex;
    justify-content: center;
}

.headshot-placeholder {
    width: 350px;
    height: 350px;
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: 0 25px 50px rgba(99, 102, 241, 0.25);
    background: var(--gradient-primary);
    padding: 4px;
}

.headshot-placeholder .headshot {
    border-radius: calc(var(--radius-xl) - 4px);
}

.headshot {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* ========================================
   Credibility Bar
   ======================================== */

.credibility-bar {
    padding: var(--space-3xl) 0;
    background-color: var(--color-bg-alt);
    border-top: 1px solid var(--color-border-light);
    border-bottom: 1px solid var(--color-border-light);
}

.credibility-section {
    margin-bottom: var(--space-2xl);
}

.credibility-section:last-child {
    margin-bottom: 0;
}

.credibility-label {
    text-align: center;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    color: var(--color-text-muted);
    margin-bottom: var(--space-lg);
    font-weight: 500;
}

.credibility-logos {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: var(--space-2xl);
    flex-wrap: wrap;
}

.logo-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    height: 50px;
}

.company-logo {
    max-height: 40px;
    max-width: 140px;
    width: auto;
    height: auto;
    object-fit: contain;
    filter: grayscale(100%);
    opacity: 0.7;
    transition: all var(--transition-base);
}

.logo-item:hover .company-logo {
    filter: grayscale(0%);
    opacity: 1;
}

.logo-item.text-logo {
    padding: 0 var(--space-md);
}

.institution-name {
    font-size: 0.9375rem;
    font-weight: 500;
    color: var(--color-text-muted);
    transition: color var(--transition-base);
    white-space: nowrap;
}

.logo-item.text-logo:hover .institution-name {
    color: var(--color-primary);
}

/* ========================================
   About Section
   ======================================== */

.about {
    padding: var(--space-4xl) 0;
}

.about-content {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: var(--space-3xl);
}

.about-text .lead {
    font-size: 1.25rem;
    color: var(--color-text);
    margin-bottom: var(--space-lg);
    line-height: 1.7;
}

.about-text p {
    color: var(--color-text-light);
    margin-bottom: var(--space-lg);
}

.about-credentials h3 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--color-secondary);
    margin-bottom: var(--space-lg);
}

.credentials-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-lg);
}

.credentials-list li {
    padding-left: var(--space-lg);
    border-left: 3px solid var(--color-accent);
}

.credential-degree {
    display: block;
    font-weight: 600;
    color: var(--color-text);
}

.credential-school {
    display: block;
    font-size: 0.875rem;
    color: var(--color-primary);
    font-weight: 500;
    margin-top: var(--space-xs);
}

.credential-detail {
    display: block;
    font-size: 0.875rem;
    color: var(--color-text-muted);
    margin-top: var(--space-xs);
}

/* ========================================
   Expertise Section
   ======================================== */

.expertise {
    padding: var(--space-4xl) 0;
    background-color: var(--color-bg-alt);
}

.expertise-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-xl);
}

.expertise-card {
    background-color: var(--color-bg);
    padding: var(--space-xl);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
    transition: all var(--transition-base);
}

.expertise-card:hover {
    box-shadow: 0 20px 40px rgba(99, 102, 241, 0.15);
    border-color: var(--color-primary);
    transform: translateY(-4px);
}

.expertise-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 56px;
    height: 56px;
    background-color: var(--color-primary-light);
    border-radius: var(--radius-md);
    color: var(--color-primary);
    margin-bottom: var(--space-lg);
    transition: all var(--transition-base);
}

.expertise-card:hover .expertise-icon {
    background: var(--gradient-primary);
    color: white;
    transform: scale(1.1);
}

.expertise-card h3 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--color-secondary);
    margin-bottom: var(--space-md);
}

.expertise-card p {
    font-size: 0.9375rem;
    color: var(--color-text-light);
    margin-bottom: var(--space-lg);
}

.expertise-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-sm);
}

.expertise-tags li {
    font-size: 0.8125rem;
    padding: var(--space-xs) var(--space-sm);
    background-color: var(--color-bg-alt);
    border-radius: var(--radius-full);
    color: var(--color-text-muted);
}

/* ========================================
   Services Section
   ======================================== */

.services {
    padding: var(--space-4xl) 0;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-xl);
}

.service-card {
    position: relative;
    padding: var(--space-xl);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    transition: all var(--transition-base);
}

.service-card:hover {
    box-shadow: var(--shadow-md);
}

.service-card.featured {
    grid-column: 1 / -1;
    background: linear-gradient(135deg, var(--color-primary-light) 0%, #fdf4ff 100%);
    border: 2px solid transparent;
    background-clip: padding-box;
    position: relative;
}

.service-card.featured::before {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: var(--radius-lg);
    padding: 2px;
    background: var(--gradient-primary);
    -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    -webkit-mask-composite: xor;
    mask-composite: exclude;
}

.service-badge {
    position: absolute;
    top: var(--space-lg);
    right: var(--space-lg);
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    padding: var(--space-xs) var(--space-sm);
    background: var(--gradient-primary);
    color: white;
    border-radius: var(--radius-full);
    box-shadow: 0 4px 10px rgba(99, 102, 241, 0.3);
}

.service-card h3 {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--color-secondary);
    margin-bottom: var(--space-md);
}

.service-description {
    font-size: 1rem;
    color: var(--color-text-light);
    margin-bottom: var(--space-lg);
}

.service-features {
    margin-bottom: var(--space-xl);
}

.service-features li {
    position: relative;
    padding-left: var(--space-lg);
    margin-bottom: var(--space-sm);
    color: var(--color-text-light);
    font-size: 0.9375rem;
}

.service-features li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0.5em;
    width: 6px;
    height: 6px;
    background-color: var(--color-accent);
    border-radius: 50%;
}

/* ========================================
   Publications Section
   ======================================== */

.publications {
    padding: var(--space-4xl) 0;
    background-color: var(--color-bg-alt);
}

.publication-featured {
    max-width: 800px;
    margin: 0 auto var(--space-2xl);
    padding: var(--space-xl);
    background: linear-gradient(135deg, var(--color-primary-light) 0%, #fdf4ff 100%);
    border: 2px solid var(--color-primary);
    border-radius: var(--radius-lg);
    position: relative;
    overflow: hidden;
}

.publication-featured::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 300px;
    height: 300px;
    background: radial-gradient(circle, rgba(99, 102, 241, 0.1) 0%, transparent 70%);
    pointer-events: none;
}

.publication-featured .publication-venue {
    background: var(--gradient-primary);
}

.publication-featured h3 {
    font-size: 1.5rem;
    margin-bottom: var(--space-md);
}

.publication-featured .publication-abstract {
    font-size: 0.9375rem;
    color: var(--color-text-light);
    line-height: 1.7;
    margin-bottom: var(--space-md);
}

.publication-featured .publication-note {
    font-size: 0.8125rem;
    font-style: normal;
    color: var(--color-text-muted);
}

.publication-featured .publication-links {
    margin-top: var(--space-lg);
}

.publications-list {
    max-width: 800px;
    margin: 0 auto;
}

.publication {
    padding: var(--space-lg) 0;
    border-bottom: 1px solid var(--color-border);
}

.publication:last-child {
    border-bottom: none;
}

.publication-venue {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    padding: var(--space-xs) var(--space-sm);
    background: var(--gradient-primary);
    color: white;
    border-radius: var(--radius-sm);
    margin-bottom: var(--space-sm);
}

.publication h3 {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--color-secondary);
    line-height: 1.4;
    margin-bottom: var(--space-sm);
}

.publication-authors {
    font-size: 0.9375rem;
    color: var(--color-text-muted);
}

.publication-authors strong {
    color: var(--color-text);
}

.publication-note {
    font-size: 0.8125rem;
    font-style: italic;
    color: var(--color-secondary);
    margin-top: var(--space-sm);
}

.publication-links {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-sm);
    margin-top: var(--space-md);
}

.publication-links a {
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
    font-size: 0.8125rem;
    font-weight: 500;
    padding: var(--space-xs) var(--space-sm);
    background-color: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    color: var(--color-text-light);
    transition: all var(--transition-fast);
}

.publication-links a:hover {
    background: var(--gradient-primary);
    border-color: transparent;
    color: white;
}

/* ========================================
   Grants Section
   ======================================== */

.grants {
    padding: var(--space-4xl) 0;
}

.grants-list {
    max-width: 800px;
    margin: 0 auto;
}

.grant {
    display: flex;
    gap: var(--space-xl);
    padding: var(--space-lg) 0;
    border-bottom: 1px solid var(--color-border);
}

.grant:last-child {
    border-bottom: none;
}

.grant-year {
    flex-shrink: 0;
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--color-primary);
    width: 60px;
}

.grant-content {
    flex: 1;
}

.grant-type {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    padding: var(--space-xs) var(--space-sm);
    background-color: var(--color-bg-alt);
    color: var(--color-text-muted);
    border-radius: var(--radius-sm);
    margin-bottom: var(--space-sm);
}

.grant h3 {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--color-secondary);
    line-height: 1.4;
    margin-bottom: var(--space-sm);
}

.grant-id {
    font-size: 0.875rem;
    color: var(--color-text-muted);
    font-family: var(--font-mono);
}

.grant-note {
    font-size: 0.8125rem;
    font-style: italic;
    color: var(--color-text-light);
    margin-top: var(--space-sm);
}

.grant-featured {
    background: linear-gradient(135deg, var(--color-primary-light) 0%, #fdf4ff 100%);
    margin: 0 calc(-1 * var(--space-lg));
    padding: var(--space-lg);
    border-radius: var(--radius-md);
    border: 2px solid var(--color-primary);
}

.grant-featured .grant-type {
    background: var(--gradient-primary);
    color: white;
}

.publications-cta {
    text-align: center;
    margin-top: var(--space-2xl);
}

/* ========================================
   Testimonial Section
   ======================================== */

.testimonial {
    padding: var(--space-4xl) 0;
    background-color: var(--color-bg-dark);
}

.testimonial blockquote {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.testimonial p {
    font-size: 1.5rem;
    font-weight: 400;
    color: white;
    line-height: 1.6;
    margin-bottom: var(--space-xl);
    font-style: italic;
}

.testimonial cite {
    display: block;
    font-style: normal;
}

.cite-name {
    display: block;
    font-size: 1rem;
    font-weight: 600;
    color: white;
}

.cite-title {
    display: block;
    font-size: 0.875rem;
    color: var(--color-text-muted);
    margin-top: var(--space-xs);
}

/* ========================================
   Contact Section
   ======================================== */

.contact {
    padding: var(--space-4xl) 0;
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-3xl);
}

.contact-info h2 {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--color-secondary);
    margin-bottom: var(--space-lg);
}

.contact-info > p {
    font-size: 1.125rem;
    color: var(--color-text-light);
    margin-bottom: var(--space-xl);
}

.contact-details {
    margin-bottom: var(--space-xl);
}

.contact-item {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    margin-bottom: var(--space-md);
    color: var(--color-text-light);
}

.contact-item svg {
    color: var(--color-primary);
    flex-shrink: 0;
}

.contact-item a {
    color: var(--color-text);
}

.contact-item a:hover {
    color: var(--color-primary);
}

.social-links {
    display: flex;
    gap: var(--space-md);
}

.social-links a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    border-radius: var(--radius-md);
    background-color: var(--color-bg-alt);
    color: var(--color-text-light);
    transition: all var(--transition-fast);
}

.social-links a:hover {
    background: var(--gradient-primary);
    color: white;
    transform: translateY(-2px);
}

.contact-form {
    background-color: var(--color-bg-alt);
    padding: var(--space-xl);
    border-radius: var(--radius-lg);
}

.form-group {
    margin-bottom: var(--space-lg);
}

.form-group label {
    display: block;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--color-text);
    margin-bottom: var(--space-sm);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: var(--space-md);
    font-family: var(--font-sans);
    font-size: 1rem;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    background-color: var(--color-bg);
    transition: border-color var(--transition-fast);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-accent);
}

.contact-form .btn {
    width: 100%;
}

/* ========================================
   Footer
   ======================================== */

.footer {
    padding: var(--space-2xl) 0;
    background-color: var(--color-bg-alt);
    border-top: 1px solid var(--color-border);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-xl);
}

.footer-brand .logo {
    display: inline-flex;
    align-items: center;
    gap: 10px;
}

.footer-brand .logo .logo-img {
    height: 48px !important;
    width: auto !important;
    max-width: none;
}

.footer-brand p {
    font-size: 0.875rem;
    color: var(--color-text-muted);
    margin-top: var(--space-xs);
}

.footer-links {
    display: flex;
    gap: var(--space-xl);
}

.footer-links a {
    font-size: 0.9375rem;
    color: var(--color-text-light);
}

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

.footer-bottom {
    padding-top: var(--space-xl);
    border-top: 1px solid var(--color-border);
    text-align: center;
}

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

/* ========================================
   Responsive Design
   ======================================== */

@media (max-width: 1024px) {
    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero-image {
        order: -1;
    }

    .headshot-placeholder {
        width: 280px;
        height: 280px;
    }

    .hero-stats {
        justify-content: center;
    }

    .hero-cta {
        justify-content: center;
    }

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

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

    .contact-content {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
    }

    .mobile-menu-btn {
        display: flex;
    }

    .hero h1 {
        font-size: 2.5rem;
    }

    .hero-description {
        font-size: 1.125rem;
    }

    .hero-cta {
        flex-direction: column;
        align-items: center;
    }

    .hero-stats {
        flex-direction: column;
        align-items: center;
        gap: var(--space-lg);
    }

    .section-header h2 {
        font-size: 2rem;
    }

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

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

    .service-card.featured {
        grid-column: auto;
    }

    .credibility-logos {
        gap: var(--space-lg);
    }

    .company-logo {
        max-height: 32px;
        max-width: 120px;
    }

    .logo-item {
        height: 40px;
    }

    .footer-content {
        flex-direction: column;
        text-align: center;
        gap: var(--space-lg);
    }

    .footer-links {
        flex-wrap: wrap;
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 var(--space-md);
    }

    .hero h1 {
        font-size: 2rem;
    }

    .headshot-placeholder {
        width: 220px;
        height: 220px;
    }

    .testimonial p {
        font-size: 1.25rem;
    }

    .contact-info h2 {
        font-size: 2rem;
    }
}

/* ========================================
   Utility Classes
   ======================================== */

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* ========================================
   ELI5 Toggle - iOS-style Slider
   ======================================== */

/* Container positioned absolutely above headshot */
.eli5-toggle {
    position: absolute;
    top: -60px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    padding: 12px 20px;
    background: rgba(255, 255, 255, 0.08);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: var(--radius-lg);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    z-index: 10;
}

/* Label before slider */
.toggle-label {
    font-size: 0.9375rem;
    font-weight: 600;
    color: #8b7fc7;
    display: flex;
    align-items: center;
    gap: 6px;
    white-space: nowrap;
    transition: color 0.3s ease;
}

.toggle-label:hover {
    color: #a094db;
}

.toggle-label.active {
    color: #667eea;
    text-shadow: 0 0 8px rgba(102, 126, 234, 0.4);
}

/* Pill-shaped slider track */
.eli5-toggle-btn {
    position: relative;
    width: 64px;
    height: 34px;
    background: rgba(255, 255, 255, 0.15);
    border: 2px solid rgba(255, 255, 255, 0.2);
    border-radius: 17px;
    cursor: pointer;
    transition: all 0.3s ease;
    flex-shrink: 0;
}

.eli5-toggle-btn:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: scale(1.05);
}

/* Active state - gradient background */
.eli5-toggle-btn.simple {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-color: rgba(102, 126, 234, 0.5);
    box-shadow: 0 0 20px rgba(102, 126, 234, 0.4);
}

/* Circular sliding knob */
.toggle-slider {
    position: absolute;
    top: 2px;
    left: 2px;
    width: 26px;
    height: 26px;
    background: #ffffff;
    border-radius: 50%;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.25), 0 1px 3px rgba(0, 0, 0, 0.2);
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.eli5-toggle-btn.simple .toggle-slider {
    transform: translateX(30px);
}

/* Hide individual toggle options (not needed in slider design) */
.toggle-option {
    display: none;
}

/* Content transition */
[data-toggleable] {
    transition: opacity 0.2s ease;
}

[data-toggleable].transitioning {
    opacity: 0.5;
}

/* Mobile responsive */
@media (max-width: 768px) {
    .eli5-toggle {
        margin-left: auto;
        margin-right: auto;
        margin-bottom: var(--space-md);
        padding: 10px 16px;
        gap: 10px;
    }

    .toggle-label {
        font-size: 0.875rem;
    }

    .eli5-toggle-btn {
        width: 56px;
        height: 30px;
    }

    .toggle-slider {
        width: 24px;
        height: 24px;
    }

    .eli5-toggle-btn.simple .toggle-slider {
        transform: translateX(26px);
    }
}

/* Very small screens - hide text labels, keep icons */
@media (max-width: 480px) {
    .toggle-label-text {
        display: none;
    }

    .eli5-toggle {
        padding: 8px 12px;
        gap: 8px;
    }
}

/* ========================================
   Experience Section
   ======================================== */

.experience {
    padding: var(--space-4xl) 0;
    background-color: var(--color-bg-alt);
}

.experience-list {
    max-width: 900px;
    margin: 0 auto;
}

.experience-item {
    display: flex;
    gap: var(--space-xl);
    padding: var(--space-xl) 0;
    border-bottom: 1px solid var(--color-border);
}

.experience-item:last-child {
    border-bottom: none;
}

.experience-period {
    flex-shrink: 0;
    font-size: 0.8125rem;
    font-weight: 600;
    color: var(--color-primary);
    font-family: var(--font-mono);
    width: 90px;
    padding-top: 2px;
    line-height: 1.4;
}

.experience-content {
    flex: 1;
}

.experience-role {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    padding: var(--space-xs) var(--space-sm);
    background-color: var(--color-bg);
    color: var(--color-text-muted);
    border-radius: var(--radius-sm);
    margin-bottom: var(--space-sm);
}

.experience-content h3 {
    font-size: 1.0625rem;
    font-weight: 700;
    color: var(--color-secondary);
    margin-bottom: var(--space-xs);
}

.experience-org {
    font-size: 0.9375rem;
    font-weight: 500;
    color: var(--color-primary);
    margin-bottom: var(--space-md);
}

.experience-bullets {
    list-style: none;
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.experience-bullets li {
    font-size: 0.9375rem;
    color: var(--color-text-light);
    padding-left: var(--space-lg);
    position: relative;
    line-height: 1.55;
}

.experience-bullets li::before {
    content: '→';
    position: absolute;
    left: 0;
    color: var(--color-accent);
    font-size: 0.875rem;
    top: 1px;
}

/* ========================================
   Projects Section
   ======================================== */

.projects {
    padding: var(--space-4xl) 0;
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--space-xl);
}

.project-card {
    background: white;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    display: flex;
    flex-direction: column;
    transition: transform var(--transition-base), box-shadow var(--transition-base);
}

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

.project-tag {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    padding: var(--space-xs) var(--space-sm);
    background: var(--gradient-primary);
    color: white;
    border-radius: var(--radius-sm);
    margin-bottom: var(--space-md);
    align-self: flex-start;
}

.project-card h3 {
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--color-secondary);
    margin-bottom: var(--space-sm);
}

.project-card p {
    font-size: 0.9375rem;
    color: var(--color-text-light);
    line-height: 1.6;
    flex: 1;
    margin-bottom: var(--space-lg);
}

.project-links {
    display: flex;
    gap: var(--space-sm);
    flex-wrap: wrap;
}

.project-links a {
    font-size: 0.8125rem;
    font-weight: 500;
    color: var(--color-primary);
    padding: var(--space-xs) var(--space-sm);
    border: 1px solid var(--color-primary);
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
}

.project-links a:hover {
    background: var(--color-primary);
    color: white;
}

/* ========================================
   Talks Section
   ======================================== */

.talks {
    padding: var(--space-4xl) 0;
    background-color: var(--color-bg-alt);
}

.talks-list {
    max-width: 800px;
    margin: 0 auto;
}

.talk {
    display: flex;
    gap: var(--space-xl);
    padding: var(--space-lg) 0;
    border-bottom: 1px solid var(--color-border);
}

.talk:last-child {
    border-bottom: none;
}

.talk-venue {
    flex-shrink: 0;
    font-size: 0.8125rem;
    font-weight: 700;
    color: var(--color-primary);
    font-family: var(--font-mono);
    width: 100px;
    padding-top: 2px;
    line-height: 1.4;
}

.talk-content {
    flex: 1;
}

.talk-type {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    padding: var(--space-xs) var(--space-sm);
    background-color: var(--color-bg);
    color: var(--color-text-muted);
    border-radius: var(--radius-sm);
    margin-bottom: var(--space-sm);
}

.talk-type.featured {
    background: var(--gradient-accent);
    color: white;
}

.talk-content h3 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--color-secondary);
    line-height: 1.4;
    margin-bottom: var(--space-xs);
}

.talk-meta {
    font-size: 0.875rem;
    color: var(--color-text-muted);
    font-style: italic;
}

@media (max-width: 768px) {
    .experience-item,
    .talk {
        flex-direction: column;
        gap: var(--space-sm);
    }

    .experience-period,
    .talk-venue {
        width: auto;
    }

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

/* ============================================================
   Blog
   ============================================================ */

.blog-listing-section {
    padding-top: calc(var(--space-3xl) + 80px);
    min-height: 70vh;
}

.blog-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-lg);
    margin-top: var(--space-2xl);
}

.blog-card {
    display: block;
    padding: var(--space-xl);
    border: 1px solid var(--color-border);
    border-radius: 12px;
    background: var(--color-bg);
    text-decoration: none;
    color: inherit;
    transition: border-color 0.2s, box-shadow 0.2s, transform 0.2s;
}

.blog-card:hover {
    border-color: var(--color-primary);
    box-shadow: 0 4px 20px rgba(99, 102, 241, 0.08);
    transform: translateY(-2px);
}

.blog-card-meta {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    margin-bottom: var(--space-sm);
}

.blog-date {
    font-size: 0.85rem;
    color: var(--color-text-muted);
    font-weight: 500;
}

.blog-tag {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--color-primary);
    background: var(--color-primary-light);
    padding: 2px 10px;
    border-radius: 20px;
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.blog-card-title {
    font-size: 1.35rem;
    font-weight: 700;
    color: var(--color-secondary);
    margin-bottom: var(--space-sm);
    line-height: 1.3;
}

.blog-card-excerpt {
    font-size: 0.95rem;
    color: var(--color-text-light);
    line-height: 1.6;
    margin-bottom: var(--space-md);
}

.blog-read-more {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--color-primary);
}

/* Article page */

.blog-article {
    padding-top: calc(var(--space-3xl) + 80px);
    padding-bottom: var(--space-3xl);
}

.container-narrow {
    max-width: 740px;
    margin: 0 auto;
    padding: 0 var(--space-lg);
}

.article-header {
    margin-bottom: var(--space-2xl);
}

.article-meta {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    margin-bottom: var(--space-lg);
    flex-wrap: wrap;
}

.article-back {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--color-primary);
    text-decoration: none;
    margin-right: auto;
}

.article-back:hover { text-decoration: underline; }

.article-title {
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    font-weight: 800;
    color: var(--color-secondary);
    line-height: 1.2;
    letter-spacing: -0.02em;
}

.article-body {
    font-family: 'Lora', Georgia, serif;
    font-size: 1.1rem;
    line-height: 1.8;
    color: var(--color-text);
}

.article-body p {
    margin-bottom: 1.5em;
}

.article-lead {
    font-size: 1.2rem;
    font-weight: 400;
    color: var(--color-secondary);
    border-left: 3px solid var(--color-primary);
    padding-left: var(--space-lg);
    margin-bottom: var(--space-xl) !important;
}

.article-body h2 {
    font-family: 'Inter', sans-serif;
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--color-secondary);
    margin-top: 2.5em;
    margin-bottom: 0.75em;
    letter-spacing: -0.01em;
}

.article-body ul {
    padding-left: 1.5em;
    margin-bottom: 1.5em;
}

.article-body li {
    margin-bottom: 0.5em;
}

.article-body strong { color: var(--color-secondary); }

.article-cta-text {
    font-size: 1.15rem;
    font-weight: 500;
    color: var(--color-secondary);
}

.article-footer .btn-primary {
    background: linear-gradient(135deg, #E05C1A 0%, #5B21B6 55%, #2D7A4F 100%);
    box-shadow: 0 2px 8px rgba(224, 92, 26, 0.35), inset 0 1px 0 rgba(255,255,255,0.15);
}

.article-footer .btn-primary:hover {
    background: linear-gradient(135deg, #c44d12 0%, #4a1a99 55%, #1f5c38 100%);
    box-shadow: 0 4px 16px rgba(224, 92, 26, 0.45), inset 0 1px 0 rgba(255,255,255,0.15);
    filter: none;
}

.article-footer {
    display: flex;
    gap: var(--space-md);
    margin-top: var(--space-2xl);
    padding-top: var(--space-xl);
    border-top: 1px solid var(--color-border);
    flex-wrap: wrap;
}

.nav-active {
    color: var(--color-primary) !important;
    font-weight: 600;
}

/* Navbar CTA button */
.navbar .btn-primary {
    background: linear-gradient(135deg, #E05C1A 0%, #5B21B6 55%, #2D7A4F 100%);
    color: white !important;
    padding: 0.45rem 1.2rem;
    font-size: 0.875rem;
    font-weight: 600;
    border-radius: 8px;
    border: none;
    box-shadow: 0 2px 8px rgba(224, 92, 26, 0.35), inset 0 1px 0 rgba(255,255,255,0.15);
    letter-spacing: 0.02em;
    transition: all 0.2s ease;
}

.navbar .btn-primary:hover {
    background: linear-gradient(135deg, #c44d12 0%, #4a1a99 55%, #1f5c38 100%);
    color: white !important;
    box-shadow: 0 4px 16px rgba(224, 92, 26, 0.45), inset 0 1px 0 rgba(255,255,255,0.15);
    transform: translateY(-1px);
    filter: none;
}