/* Root Variables */
:root {
    --primary: #0f766e;
    --primary-light: #14b8a6;
    --primary-dark: #0d5f57;
    --secondary: #1e293b;
    --text: #1e293b;
    --text-light: #64748b;
    --bg: #ffffff;
    --bg-light: #f8fafc;
    --border: #e2e8f0;
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;
}

@media (prefers-color-scheme: dark) {
    :root {
        --primary: #14b8a6;
        --primary-light: #2dd4bf;
        --primary-dark: #0d7c66;
        --secondary: #e2e8f0;
        --text: #f1f5f9;
        --text-light: #cbd5e1;
        --bg: #0f172a;
        --bg-light: #1e293b;
        --border: #334155;
    }
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    font-size: 1rem;
    line-height: 1.6;
    color: var(--text);
    background-color: var(--bg);
}

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

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

h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.2;
    margin-bottom: var(--spacing-md);
}

h1 {
    font-size: 2.5rem;
}

h2 {
    font-size: 2rem;
}

h3 {
    font-size: 1.5rem;
}

h4 {
    font-size: 1.25rem;
}

p {
    margin-bottom: var(--spacing-md);
    color: var(--text-light);
}

ul {
    margin-left: var(--spacing-lg);
    margin-bottom: var(--spacing-md);
}

ul li {
    margin-bottom: var(--spacing-xs);
    color: var(--text-light);
}

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

/* Header */
.header {
    background-color: var(--bg);
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-md) 0;
}

.logo {
    display: flex;
    align-items: center;
    transition: opacity 0.2s;
}

.logo:hover {
    opacity: 0.8;
}

.logo-image {
    height: 50px;
    width: auto;
    display: block;
}

/* Navigation */
.nav {
    display: flex;
    gap: var(--spacing-lg);
    align-items: center;
}

.nav-link {
    color: var(--text-light);
    font-weight: 500;
    transition: color 0.2s;
    position: relative;
}

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

.nav-link.active {
    color: var(--primary);
}

.nav-link.active::after {
    content: '';
    position: absolute;
    bottom: -0.5rem;
    left: 0;
    right: 0;
    height: 2px;
    background-color: var(--primary);
}

/* Hero Section */
.hero {
    padding: var(--spacing-2xl) var(--spacing-lg);
    text-align: center;
    background: linear-gradient(135deg, var(--bg-light), var(--bg));
}

.hero-title {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--text-light);
    margin-bottom: var(--spacing-lg);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.hero-cta {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    flex-wrap: wrap;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    border-radius: 0.375rem;
    font-weight: 600;
    transition: all 0.2s;
    text-decoration: none;
    border: none;
    cursor: pointer;
    font-size: 1rem;
}

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

.btn-primary:hover {
    background-color: var(--primary-dark);
    transform: translateY(-2px);
}

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

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

/* Sections */
section {
    padding: var(--spacing-2xl) 0;
}

/* Positioning Band */
.positioning-band {
    padding: var(--spacing-xl) 0;
    text-align: center;
    background: linear-gradient(135deg, var(--bg-light), var(--bg));
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
}

.positioning-band p {
    font-size: 1.35rem;
    font-weight: 600;
    color: var(--text);
    margin-bottom: 0;
}

/* Founder Section */
.founder-section {
    padding: var(--spacing-2xl) 0;
}

.founder-section h2 {
    text-align: center;
}

.founder-grid {
    display: grid;
    grid-template-columns: auto 1fr;
    gap: var(--spacing-xl);
    align-items: start;
}

.founder-grid.founder-grid-full {
    grid-template-columns: auto 1fr;
}

.avatar-placeholder {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 140px;
    height: 140px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    color: white;
    font-size: 2.5rem;
    font-weight: 700;
    flex-shrink: 0;
}

.avatar-placeholder.avatar-large {
    width: 200px;
    height: 200px;
    font-size: 3.5rem;
}

.founder-photo-img {
    width: 140px;
    height: 140px;
    border-radius: 50%;
    object-fit: cover;
    flex-shrink: 0;
}

.founder-photo-img.avatar-large {
    width: 200px;
    height: 200px;
}

.founder-name {
    font-weight: 700;
    color: var(--text);
    margin-bottom: var(--spacing-xs);
}

.founder-title {
    color: var(--primary);
    font-weight: 600;
    margin-bottom: var(--spacing-md);
}

.founder-bio p {
    margin-bottom: var(--spacing-md);
}

.founder-expertise {
    margin-top: var(--spacing-lg);
}

.founder-link {
    margin-top: var(--spacing-md);
    display: inline-block;
    font-weight: 600;
}

/* Publications */
.publications-preview,
.publications-full-section {
    padding: var(--spacing-2xl) 0;
}

.publications-preview h2,
.publications-full-section h2 {
    text-align: center;
}

.section-intro {
    text-align: center;
    max-width: 700px;
    margin: 0 auto var(--spacing-xl);
}

.publications-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.publication-card {
    padding: var(--spacing-lg);
    background-color: var(--bg-light);
    border: 1px solid var(--border);
    border-radius: 0.5rem;
    transition: all 0.2s;
}

.publication-card:hover {
    border-color: var(--primary);
}

.publication-title {
    font-size: 1.1rem;
    margin-bottom: var(--spacing-xs);
    color: var(--text);
}

.publication-meta {
    font-size: 0.9rem;
    color: var(--text-light);
    margin-bottom: var(--spacing-sm);
}

.publication-blurb {
    margin-bottom: var(--spacing-sm);
}

.publication-authors {
    font-size: 0.9rem;
    color: var(--text-light);
    margin-bottom: var(--spacing-sm);
}

.publication-links a {
    font-weight: 600;
    font-size: 0.9rem;
}

.pub-badge {
    display: inline-block;
    background: var(--bg-light);
    border: 1px solid var(--border);
    border-radius: 999px;
    padding: 0.15rem 0.6rem;
    font-size: 0.75rem;
    color: var(--primary);
    font-weight: 600;
    vertical-align: middle;
}

.cv-entry {
    margin-bottom: var(--spacing-xl);
    padding-bottom: var(--spacing-xl);
    border-bottom: 1px solid var(--border);
}

.cv-entry:last-child {
    border-bottom: none;
    margin-bottom: 0;
    padding-bottom: 0;
}

.cv-entry h3 {
    color: var(--primary);
    margin-bottom: var(--spacing-xs);
}

.cv-entry-meta {
    color: var(--text-light);
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
}

.cv-entry ul {
    list-style: none;
    margin-left: 0;
}

.cv-entry ul li {
    padding-left: var(--spacing-lg);
    position: relative;
    margin-bottom: var(--spacing-sm);
}

.cv-entry ul li:before {
    content: '→';
    position: absolute;
    left: 0;
    color: var(--primary);
    font-weight: bold;
}

.pub-year-group {
    margin-bottom: var(--spacing-2xl);
}

.pub-year-group h2 {
    color: var(--primary);
    border-bottom: 2px solid var(--border);
    padding-bottom: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
}

.publications-fallback {
    text-align: center;
    color: var(--text-light);
}

.page-header {
    padding: var(--spacing-2xl) var(--spacing-lg);
    background: linear-gradient(135deg, var(--bg-light), var(--bg));
    text-align: center;
    margin-bottom: var(--spacing-2xl);
}

.page-header h1 {
    color: var(--text);
}

.page-header p {
    font-size: 1.25rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.about-section {
    padding: var(--spacing-2xl) 0;
}

.about-section h2 {
    text-align: center;
    margin-bottom: var(--spacing-xl);
}

/* Services Grid */
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.service-card {
    padding: var(--spacing-lg);
    background-color: var(--bg-light);
    border: 1px solid var(--border);
    border-radius: 0.5rem;
    transition: all 0.2s;
}

.service-card:hover {
    border-color: var(--primary);
    transform: translateY(-4px);
    box-shadow: 0 4px 12px rgba(15, 118, 110, 0.1);
}

.service-card h3 {
    color: var(--primary);
    margin-bottom: var(--spacing-sm);
}

.service-card p {
    color: var(--text-light);
}

.services-preview h2 {
    text-align: center;
    margin-bottom: var(--spacing-xl);
}

.section-cta {
    text-align: center;
    margin-top: var(--spacing-xl);
}

/* Services Detailed */
.services-detailed {
    max-width: 900px;
    margin: 0 auto;
    padding: var(--spacing-2xl) var(--spacing-lg);
}

.service-detail {
    margin-bottom: var(--spacing-2xl);
    padding-bottom: var(--spacing-2xl);
    border-bottom: 1px solid var(--border);
}

.service-detail:last-child {
    border-bottom: none;
}

.service-detail h2 {
    color: var(--primary);
    margin-bottom: var(--spacing-md);
}

.service-detail p {
    margin-bottom: var(--spacing-md);
}

.service-detail ul {
    list-style-type: none;
    margin-left: 0;
}

.service-detail ul li {
    padding-left: var(--spacing-lg);
    position: relative;
    margin-bottom: var(--spacing-sm);
}

.service-detail ul li:before {
    content: '→';
    position: absolute;
    left: 0;
    color: var(--primary);
    font-weight: bold;
}

/* Approach Steps */
.approach h2 {
    text-align: center;
    margin-bottom: var(--spacing-xl);
}

.approach-steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
}

.step {
    text-align: center;
    padding: var(--spacing-lg);
}

.step-number {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 3rem;
    height: 3rem;
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    color: white;
    border-radius: 50%;
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: var(--spacing-md);
}

.step h3 {
    color: var(--text);
    margin-bottom: var(--spacing-sm);
}

.step p {
    color: var(--text-light);
    font-size: 0.95rem;
}

/* Principles */
.principles h2 {
    text-align: center;
    margin-bottom: var(--spacing-xl);
}

.principles-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
}

.principle {
    padding: var(--spacing-lg);
    background-color: var(--bg-light);
    border-left: 4px solid var(--primary);
    border-radius: 0.375rem;
}

.principle h3 {
    color: var(--primary);
    margin-bottom: var(--spacing-sm);
}

/* Philosophy Grid */
.philosophy-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
}

.philosophy-item {
    padding: var(--spacing-lg);
}

.philosophy-item h3 {
    color: var(--primary);
    margin-bottom: var(--spacing-sm);
}

/* Expertise Grid */
.expertise-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-lg);
    margin-top: var(--spacing-lg);
}

.expertise-box {
    padding: var(--spacing-lg);
    background-color: var(--bg-light);
    border: 1px solid var(--border);
    border-radius: 0.5rem;
}

.expertise-box h3 {
    color: var(--primary);
    margin-bottom: var(--spacing-sm);
}

/* Contact Section */
.contact-section {
    max-width: 1000px;
    margin: 0 auto;
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-2xl);
    align-items: start;
}

.contact-info h2 {
    margin-bottom: var(--spacing-lg);
}

.contact-item {
    margin-bottom: var(--spacing-lg);
}

.contact-item h3 {
    color: var(--primary);
    margin-bottom: var(--spacing-sm);
    font-size: 1rem;
}

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

/* Contact Email Box */
.contact-email-wrapper h2 {
    margin-bottom: var(--spacing-lg);
}

.contact-email-wrapper p {
    margin-bottom: var(--spacing-md);
}

.email-box {
    background-color: var(--bg-light);
    padding: var(--spacing-lg);
    border: 2px solid var(--border);
    border-radius: 0.5rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.email-text {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--primary);
    word-break: break-all;
}

.copy-email-btn {
    white-space: nowrap;
    flex-shrink: 0;
}

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

.email-note {
    font-size: 0.95rem;
    color: var(--text-light);
}

/* CTA Section */
.cta-section {
    text-align: center;
    padding: var(--spacing-2xl) var(--spacing-lg);
    background: linear-gradient(135deg, var(--bg-light), var(--bg));
    border-radius: 0.5rem;
}

.cta-section h2 {
    margin-bottom: var(--spacing-md);
}

.cta-section p {
    margin-bottom: var(--spacing-lg);
    font-size: 1.1rem;
}

/* Footer */
.footer {
    background-color: var(--secondary);
    color: #e2e8f0;
    padding: var(--spacing-2xl) 0 var(--spacing-lg);
    margin-top: var(--spacing-2xl);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.footer-section h4 {
    color: #f1f5f9;
    margin-bottom: var(--spacing-sm);
}

.footer-section p {
    color: #cbd5e1;
    margin-bottom: var(--spacing-sm);
}

.footer-section a {
    color: #cbd5e1;
    transition: color 0.2s;
}

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

.footer-nav {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.footer-bottom {
    padding-top: var(--spacing-lg);
    border-top: 1px solid #334155;
    text-align: center;
    color: #cbd5e1;
    font-size: 0.9rem;
}

/* Responsive */
@media (max-width: 768px) {
    h1 {
        font-size: 2rem;
    }

    h2 {
        font-size: 1.5rem;
    }

    h3 {
        font-size: 1.25rem;
    }

    .container {
        padding: 0 var(--spacing-md);
    }

    .header-content {
        flex-wrap: wrap;
        gap: var(--spacing-md);
    }

    .logo-text {
        width: 2rem;
        height: 2rem;
        font-size: 0.875rem;
    }

    .nav {
        gap: var(--spacing-md);
        order: 3;
        width: 100%;
    }

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

    .hero-subtitle {
        font-size: 1rem;
    }

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

    .btn {
        min-width: 200px;
    }

    .contact-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }

    .email-box {
        flex-direction: column;
        align-items: flex-start;
    }

    .founder-grid {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .founder-grid .avatar-placeholder,
    .founder-grid .founder-photo-img {
        margin: 0 auto;
    }

    .positioning-band p {
        font-size: 1.1rem;
    }

    .page-header {
        padding: var(--spacing-xl) var(--spacing-md);
    }

    section {
        padding: var(--spacing-xl) 0;
    }
}

@media (max-width: 480px) {
    h1 {
        font-size: 1.5rem;
    }

    h2 {
        font-size: 1.25rem;
    }

    h3 {
        font-size: 1.1rem;
    }

    .hero {
        padding: var(--spacing-xl) var(--spacing-md);
    }

    .hero-title {
        font-size: 1.5rem;
    }

    .hero-subtitle {
        font-size: 0.95rem;
    }

    .step-number {
        width: 2.5rem;
        height: 2.5rem;
        font-size: 1.25rem;
    }

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

    .approach-steps {
        grid-template-columns: 1fr;
    }

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

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

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