/* ========================================
   TYPOGRAPHY & GLOBAL STYLES
   ======================================== */

* {
    font-family: 'Outfit', sans-serif;
}

h1, h2, h3, h4, h5, h6 {
    font-family: 'Outfit', sans-serif;
    letter-spacing: -0.02em;
}

h1 {
    font-size: 3.75rem;
    font-weight: 300;
}

h2 {
    font-size: 2.5rem;
    font-weight: 400;
}

body {
    font-size: 1.25rem;
    line-height: 1.7;
}

html {
    scroll-behavior: smooth;
}

/* ========================================
   LIGHT MODE - DEFAULT (TEAL/PURPLE SCHEME)
   ======================================== */

body {
    background-color: #F8FAFC;
    color: #0F172A;
    font-size: 1.25rem;
    line-height: 1.7;
}

h1, h2, h3, h4, h5, h6 {
    color: #0F172A;
    font-family: 'Outfit', sans-serif;
    letter-spacing: -0.02em;
}

h1 {
    font-size: 3.75rem;
    font-weight: 300;
}

h2 {
    font-size: 2.5rem;
    font-weight: 400;
}

a {
    color: #0D9488;
}

a:hover {
    color: #0F766E;
}

section {
    background-color: #F8FAFC;
}

nav {
    background-color: #F8FAFC;
    border-color: #E2E8F0;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

footer {
    background-color: #F1F5F9;
    border-color: #E2E8F0;
    color: #475569;
}

.border-b {
    border-color: #E2E8F0;
}

.text-secondary {
    color: #475569;
}

.bg-card {
    background-color: #F1F5F9;
}

/* Hero section background variation - Light Mode */
#home {
    background: linear-gradient(135deg, #F8FAFC 0%, #F1F5F9 100%);
}

/* ========================================
   DARK MODE (TEAL SCHEME)
   ======================================== */

html.dark-mode {
    color-scheme: dark;
}

html.dark-mode body {
    background-color: #0B0F19;
    color: #F9FAFB;
}

html.dark-mode h1, html.dark-mode h2, html.dark-mode h3, 
html.dark-mode h4, html.dark-mode h5, html.dark-mode h6 {
    color: #F9FAFB;
}

html.dark-mode a {
    color: #2DD4BF;
}

html.dark-mode a:hover {
    color: #5EEAD4;
}

html.dark-mode section {
    background-color: #0B0F19;
}

html.dark-mode nav {
    background-color: #111827;
    border-color: #1F2937;
}

html.dark-mode footer {
    background-color: #111827;
    border-color: #1F2937;
    color: #9CA3AF;
}

html.dark-mode .border-b {
    border-color: #2DD4BF;
}

html.dark-mode .text-secondary {
    color: #9CA3AF;
}

html.dark-mode .bg-card {
    background-color: #1F2937;
}

/* Hero section background variation - Dark Mode */
html.dark-mode #home {
    background: linear-gradient(135deg, #111827 0%, #0B0F19 50%, #1a1f2e 100%), linear-gradient(90deg, rgba(13, 148, 136, 0.1) 0%, rgba(124, 58, 237, 0.1) 100%);
}

/* ========================================
   NAVIGATION
   ======================================== */

.logo {
    font-weight: 700;
    font-size: 1.5rem;
    letter-spacing: -0.5px;
    color: #0D9488;
}

.nav-link {
    transition: color 0.3s ease;
    font-weight: 500;
    font-size: 0.875rem;
    color: #475569;
}

.nav-link:hover {
    color: #0D9488;
}

.search-input {
    background-color: transparent;
    border: none;
    outline: none;
    width: 100%;
    font-size: 1.125rem;
    color: #0F172A;
}

html.dark-mode .search-input {
    color: #F9FAFB;
}

.search-input::placeholder {
    color: #94A3B8;
}

html.dark-mode .search-input::placeholder {
    color: #9CA3AF;
}

.theme-toggle {
    transition: all 0.3s ease;
    background-color: #E0F2FE;
    color: #0D9488;
}

.theme-toggle:hover {
    background-color: #CCFBF1;
    color: #0F766E;
}

/* ========================================
   PROFILE & SOCIAL ICONS
   ======================================== */

.profile-image {
    width: 220px;
    height: 220px;
    border-radius: 50%;
    object-fit: cover;
    
}

html.dark-mode .profile-image {
    border-color: #2DD4BF;
}

.social-icon {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 6px;
    transition: all 0.3s ease;
    cursor: pointer;
    background-color: #E0F2FE;
    color: #0D9488;
}

html.dark-mode .social-icon {
    background-color: #1F2937;
    color: #2DD4BF;
}

.social-icon:hover {
    background-color: #CCFBF1;
    color: #0F766E;
}

/* ========================================
   TYPOGRAPHY & SECTIONS
   ======================================== */

.section-heading {
    font-size: 2.5rem;
    font-weight: 400;
    margin-bottom: 32px;
    letter-spacing: -0.02em;
    color: #0f172a;
}

html.dark-mode .section-heading {
    color: #ffffff;
}

.bio-section {
    line-height: 1.7;
    font-size: 1.25rem;
}

.bio-section p {
    color: #4b5563;
    margin-bottom: 1rem;
}

html.dark-mode .bio-section p {
    color: #d1d5db;
}

/* ========================================
   EXPERIENCE SECTION
   ======================================== */

#experience {
    background-color: #ffffff;
}

html.dark-mode #experience {
    background-color: #0f172a;
}

.experience-card {
    background-color: #ffffff;
    border-color: #e2e8f0;
    color: #1e293b;
}

.experience-card:hover {
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.07);
}

html.dark-mode .experience-card {
    background-color: #111827;
    border-color: #1f2937;
    color: #f1f5f9;
}

html.dark-mode .experience-card:hover {
    box-shadow: 0 20px 25px rgba(0, 0, 0, 0.3);
}

.experience-badge {
    background-color: #f1f5f9;
    color: #0D9488;
}

html.dark-mode .experience-badge {
    background-color: #1f2937;
    color: #0D9488;
}

.experience-title {
    color: #1e293b;
    font-weight: 600;
}

html.dark-mode .experience-title {
    color: #ffffff;
}

.experience-company {
    color: #64748b;
}

html.dark-mode .experience-company {
    color: #9ca3af;
}

.experience-meta {
    color: #9ca3af;
}

html.dark-mode .experience-meta {
    color: #9ca3af;
}

.timeline-line {
    background-color: #e5e7eb;
}

html.dark-mode .timeline-line {
    background-color: #374151;
}

.timeline-placeholder {
    background-color: #f8fafc;
    border-color: #cbd5e1;
    color: #a8b0b8;
}

html.dark-mode .timeline-placeholder {
    background-color: #1e293b;
    border-color: #475569;
    color: #64748b;
}

/* ========================================
   LISTS & ITEMS
   ======================================== */

.list-item {
    display: flex;
    gap: 12px;
    margin-bottom: 12px;
    font-size: 1.125rem;
    line-height: 1.7;
}

.list-icon {
    flex-shrink: 0;
    width: 20px;
    height: 20px;
    margin-top: 2px;
    color: #0D9488;
}

html.dark-mode .list-icon {
    color: #2DD4BF;
}

/* ========================================
   EDUCATION SECTION
   ======================================== */

.interests-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 48px;
}

@media (max-width: 768px) {
    .interests-grid {
        grid-template-columns: 1fr;
        gap: 32px;
    }
}

.education-item {
    margin-bottom: 28px;
}

.education-degree {
    font-weight: 600;
    margin-bottom: 4px;
    font-size: 1.125rem;
}

.education-school {
    font-size: 1.125rem;
    color: #666666;
}

html.dark-mode .education-school {
    color: #a0a0a0;
}

.education-info {
    font-size: 1.125rem;
    margin-top: 4px;
    color: #999999;
}

html.dark-mode .education-info {
    color: #9ca3af;
}

/* ========================================
   PUBLICATION CARDS
   ======================================== */

.publication-card {
    padding: 20px;
    margin-bottom: 20px;
    border-radius: 8px;
    transition: all 0.3s ease;
    background-color: #F1F5F9;
}

html.dark-mode .publication-card {
    background-color: #1F2937;
}

.publication-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
}

html.dark-mode .publication-card:hover {
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.3);
}

.publication-year {
    display: inline-block;
    font-size: 1.125rem;
    font-weight: 600;
    padding: 4px 10px;
    border-radius: 4px;
    margin-left: 8px;
    background-color: #E0F2FE;
    color: #0D9488;
}

html.dark-mode .publication-year {
    background-color: #0B0F19;
    color: #2DD4BF;
}

/* ========================================
   RESEARCH AREAS BULLETS
   ======================================== */

.research-bullet {
    background-color: #0D9488;
}

html.dark-mode .research-bullet {
    background-color: #2DD4BF;
}