@import url('https://fonts.googleapis.com/css2?family=DM+Sans:wght@400;500;600;700&family=EB+Garamond:wght@400;500;600;700&display=swap');

/* ============================================
   CSS Variables & Reset
   ============================================ */

:root {
    --font-body: 'EB Garamond', serif;
    --font-heading: 'DM Sans', sans-serif;

    /* Dark mode (default) */
    --bg: #0f0f12;
    --text: #f9fafb;
    --card-bg: #18181b;
    --accent: #2563EB;
    --border: #2a2a2e;
    
    /* Additional dark mode colors */
    --primary-color: #2563EB;
    --primary-dark: #1D4ED8;
    --primary-light: #60A5FA;
    --text-primary: #f9fafb;
    --text-secondary: #d1d5db;
    --text-light: #9ca3af;
    --bg-primary: #0f0f12;
    --bg-secondary: #18181b;
    --bg-alt: #1f1f23;
    --border-color: #2a2a2e;
    
    /* Shadows for dark mode */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.5);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.6);
    
    /* Layout */
    --max-width: 1100px;
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 3rem;
    --spacing-xl: 4rem;
    --border-radius: 0.5rem;
    --transition: all 0.25s ease;
}

/* Light mode override */
.light-mode {
    --bg: #ffffff;
    --text: #111827;
    --card-bg: #f3f4f6;
    --accent: #2563EB;
    --border: #e5e7eb;
    
    --text-primary: #111827;
    --text-secondary: #6b7280;
    --text-light: #9ca3af;
    --bg-primary: #ffffff;
    --bg-secondary: #f9fafb;
    --bg-alt: #f3f4f6;
    --border-color: #e5e7eb;
    
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
}

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

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

body {
    font-family: var(--font-body);
    color: var(--text);
    background-color: var(--bg);
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    transition: background-color 0.25s ease, color 0.25s ease;
}

/* ============================================
   Typography
   ============================================ */

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 600;
    line-height: 1.2;
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
}

h1 {
    font-size: 3rem;
    font-weight: 700;
}

h2 {
    font-size: 2.25rem;
}

h3 {
    font-size: 1.5rem;
}

p {
    margin-bottom: var(--spacing-sm);
    color: var(--text-secondary);
}

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

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

/* ============================================
   Container & Layout
   ============================================ */

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

@media (max-width: 768px) {
    .container {
        padding: 0 var(--spacing-sm);
    }
}

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

.navbar {
    position: sticky;
    top: 0;
    background-color: rgba(15, 15, 18, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border);
    z-index: 1000;
    padding: var(--spacing-sm) 0;
    transition: background-color 0.25s ease, border-color 0.25s ease;
}

.light-mode .navbar {
    background-color: rgba(255, 255, 255, 0.95);
}

.navbar .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
}

.nav-logo {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text);
    transition: color 0.25s ease;
}

.nav-logo:hover {
    color: var(--accent);
}

/* Dark Mode Toggle */
.theme-toggle {
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text);
    transition: color 0.25s ease, transform 0.25s ease;
    margin-left: var(--spacing-sm);
}

.theme-toggle:hover {
    color: var(--accent);
    transform: rotate(15deg);
}

.theme-toggle svg {
    width: 20px;
    height: 20px;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: var(--spacing-md);
    align-items: center;
    margin-left: auto;
    flex-wrap: wrap;
    justify-content: flex-end;
}

.nav-menu li {
    list-style: none;
}

.nav-menu a {
    color: var(--text-secondary);
    font-weight: 500;
    font-size: 0.95rem;
    padding: var(--spacing-xs) 0;
    position: relative;
}

.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--primary-color);
    transition: width 0.3s ease;
}

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

.nav-menu a:hover::after {
    width: 100%;
}

.nav-menu a.active {
    color: var(--accent);
    font-weight: 600;
}

.nav-menu a.active::after {
    width: 100%;
    background-color: var(--accent);
}


@media (max-width: 768px) {
    .navbar .container {
        justify-content: center;
    }

    .nav-menu {
        width: 100%;
        justify-content: center;
        margin-left: 0;
        gap: var(--spacing-sm);
    }

    .theme-toggle {
        margin-left: 0;
    }
}

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

.hero {
    padding: var(--spacing-xl) 0;
    background: linear-gradient(180deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
    scroll-margin-top: 80px;
}

.hero-content {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
    max-width: 1200px;
    margin: 0 auto;
}

.hero-image-container {
    flex: 0 0 auto;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    position: relative;
    gap: var(--spacing-md);
}


.hero-profile-image {
    width: 200px;
    height: 200px;
    border-radius: 50%;
    object-fit: cover;
    border: 4px solid var(--border);
    box-shadow: var(--shadow-lg);
    background-color: var(--bg-alt);
    transition: var(--transition);
}

.hero-profile-image:hover {
    transform: scale(1.05);
    box-shadow: var(--shadow-xl);
}

.hero-profile-image:not([src]),
.hero-profile-image[src=""] {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-light) 100%);
    opacity: 0.2;
}

.hero-social-icons {
    display: flex;
    gap: var(--spacing-md);
    align-items: center;
    justify-content: center;
}

.hero-social-icon {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background-color: var(--card-bg);
    border: 2px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text);
    text-decoration: none;
    transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease, background-color 0.25s ease;
    box-shadow: var(--shadow-sm);
}

.hero-social-icon:hover {
    transform: translateY(-4px) scale(1.1);
    box-shadow: var(--shadow-lg);
    border-color: var(--accent);
    background-color: rgba(37, 99, 235, 0.1);
    color: var(--accent);
}

.hero-social-icon svg {
    width: 20px;
    height: 20px;
}

.hero-image-container::after {
    content: '';
    position: absolute;
    width: 200px;
    height: 200px;
    border-radius: 50%;
    background-color: var(--bg-alt);
    border: 4px solid var(--border);
    box-shadow: var(--shadow-lg);
    z-index: -1;
    pointer-events: none;
}

.hero-divider {
    width: 1px;
    height: 300px;
    background-color: var(--border);
    opacity: 0.5;
    flex-shrink: 0;
}

.hero-text {
    flex: 1;
    text-align: left;
}

.hero-title {
    font-size: 4rem;
    margin-bottom: var(--spacing-sm);
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-light) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-align: left;
}

.hero-subtitle {
    font-size: 1.5rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
    font-weight: 400;
    text-align: left;
}

.hero-bio {
    max-width: 700px;
    margin: 0 0 var(--spacing-lg) 0;
    font-size: 1.125rem;
    line-height: 1.8;
    color: var(--text-secondary);
    text-align: left;
}

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

@media (max-width: 968px) {
    .hero-content {
        flex-direction: column;
        text-align: center;
    }

    .hero-divider {
        width: 200px;
        height: 1px;
        margin: var(--spacing-md) 0;
    }

    .hero-text {
        text-align: center;
    }

    .hero-title {
        text-align: center;
    }

    .hero-subtitle {
        text-align: center;
    }

    .hero-bio {
        text-align: center;
        margin: 0 auto var(--spacing-lg);
    }

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

@media (max-width: 768px) {
    .navbar .container {
        flex-direction: column;
        gap: var(--spacing-sm);
    }

    .nav-menu {
        width: 100%;
        justify-content: center;
        flex-wrap: wrap;
        gap: var(--spacing-xs);
    }

    .nav-menu a {
        font-size: 0.85rem;
    }

    .hero-content {
        flex-direction: column;
        text-align: center;
    }

    .hero-divider {
        display: none;
    }

    .hero-profile-image {
        width: 140px;
        height: 140px;
    }

    .hero-image-container::after {
        width: 140px;
        height: 140px;
    }

    .hero-text,
    .hero-title,
    .hero-subtitle,
    .hero-bio {
        text-align: center;
    }

    .hero-title {
        font-size: 2.25rem;
    }

    .hero-subtitle {
        font-size: 1.1rem;
    }

    .hero-bio {
        font-size: 1rem;
        margin: 0 auto var(--spacing-lg);
    }

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

    .home-experience-timeline {
        padding-left: 0;
    }

    .home-experience-card {
        margin-left: 0;
    }

    .education-logo-wrapper {
        width: 40px;
        height: 40px;
    }

    .education-card-header {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-xs);
    }

    .education-item:hover {
        transform: none;
        box-shadow: var(--shadow-sm);
        border-color: var(--border);
    }

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

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

    .contact-options {
        gap: var(--spacing-sm);
    }
}

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

.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    font-weight: 500;
    border-radius: var(--border-radius);
    transition: var(--transition);
    cursor: pointer;
    border: none;
    font-size: 1rem;
    text-align: center;
}

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

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

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

.btn-secondary:hover {
    background-color: var(--primary-color);
    color: white;
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

/* ============================================
   Sections
   ============================================ */

.section {
    padding: var(--spacing-xl) 0;
    scroll-margin-top: 80px;
}

.section-alt {
    background-color: var(--bg-secondary);
}

.section-title {
    text-align: center;
    margin-bottom: var(--spacing-lg);
    font-size: 2.5rem;
}

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

/* ============================================
   Projects Grid
   ============================================ */

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

.project-card {
    background-color: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: var(--border-radius);
    padding: var(--spacing-md);
    transition: var(--transition);
    box-shadow: var(--shadow-sm);
}

.project-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-xl);
    border-color: var(--accent);
}

.project-card-content {
    display: flex;
    flex-direction: column;
    height: 100%;
}

.project-title {
    font-size: 1.5rem;
    margin-bottom: 0.25rem;
    color: var(--text-primary);
}

.project-date {
    font-size: 0.9rem;
    color: var(--text-light);
    margin-bottom: var(--spacing-sm);
    font-weight: 400;
}

.project-description {
    flex-grow: 1;
    margin-bottom: var(--spacing-md);
    color: var(--text-secondary);
    line-height: 1.6;
}

.project-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
    margin-bottom: var(--spacing-md);
}

.tag {
    display: inline-block;
    padding: 0.35rem 0.85rem;
    background: rgba(37, 99, 235, 0.1);
    color: var(--accent);
    border-radius: 999px;
    font-size: 0.85rem;
    font-weight: 500;
    border: 1px solid rgba(37, 99, 235, 0.2);
    transition: transform 0.2s ease, box-shadow 0.2s ease, background-color 0.2s ease;
}

.tag:hover {
    background: rgba(37, 99, 235, 0.2);
    box-shadow: 0 0 12px rgba(37, 99, 235, 0.25);
    transform: translateY(-2px);
}

.project-link {
    color: var(--primary-color);
    font-weight: 500;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.project-link:hover {
    color: var(--primary-dark);
    gap: 0.75rem;
}

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

/* ============================================
   Skills Section
   ============================================ */

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

.skill-category {
    background-color: var(--card-bg);
    padding: var(--spacing-md);
    border-radius: var(--border-radius);
    border: 1px solid var(--border);
    transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
    box-shadow: var(--shadow-sm);
}

.skill-category:hover {
    transform: translateY(-6px) scale(1.01);
    box-shadow: var(--shadow-xl);
    border-color: rgba(37, 99, 235, 0.6);
}

.skill-category-title {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
}

.skill-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
}

.skill-tag {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.35rem 0.85rem;
    background: rgba(37, 99, 235, 0.1);
    color: var(--accent);
    border-radius: 999px;
    font-size: 0.85rem;
    font-weight: 500;
    border: 1px solid rgba(37, 99, 235, 0.2);
    transition: transform 0.2s ease, box-shadow 0.2s ease, background-color 0.2s ease;
}

.skill-tag:hover {
    background: rgba(37, 99, 235, 0.2);
    box-shadow: 0 0 12px rgba(37, 99, 235, 0.25);
    transform: translateY(-2px);
}

.skill-icon {
    width: 20px;
    height: 20px;
    object-fit: contain;
    flex-shrink: 0;
}

/* ============================================
   Experience Preview
   ============================================ */

.experience-preview {
    max-width: 800px;
    margin: 0 auto;
}

.experience-item {
    background-color: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: var(--border-radius);
    padding: var(--spacing-md);
    margin-bottom: var(--spacing-md);
    transition: var(--transition);
}

.experience-item:hover {
    box-shadow: var(--shadow-md);
    border-color: var(--accent);
}

.experience-header {
    display: flex;
    flex-wrap: wrap;
    align-items: baseline;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
}

.experience-title {
    font-size: 1.25rem;
    margin: 0;
    color: var(--text-primary);
}

.experience-company {
    color: var(--primary-color);
    font-weight: 500;
}

.experience-date {
    color: var(--text-light);
    font-size: 0.9rem;
    margin-left: auto;
}

.experience-description {
    color: var(--text-secondary);
    line-height: 1.7;
    margin: 0;
}

.home-experience {
    position: relative;
}

.home-experience-timeline {
    position: relative;
    max-width: 1100px;
    margin: 0 auto;
}

.home-experience-item {
    position: relative;
    margin-bottom: var(--spacing-xl);
}

.home-experience-card {
    margin-left: 0;
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: var(--border-radius);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-sm);
    transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
    width: 100%;
}

.home-experience-item:hover .home-experience-card {
    transform: translateY(-6px) scale(1.01);
    box-shadow: var(--shadow-xl);
    border-color: rgba(37, 99, 235, 0.6);
}

.home-experience-card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-sm);
}

.home-experience-company-block {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.home-experience-logo-wrapper {
    width: 48px;
    height: 48px;
    border-radius: 0.4rem;
    overflow: hidden;
    border: 2px solid var(--border);
    box-shadow: var(--shadow-sm);
    background: var(--bg-alt);
}

.home-experience-logo {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.korrus-logo-wrapper {
    width: 56px;
    height: 48px;
    background-color: white;
    padding: 4px;
}

.korrus-logo {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.home-experience-company {
    margin: 0;
    font-weight: 600;
    font-size: 1.4rem;
    color: var(--accent);
}

.home-experience-date {
    margin: 0;
    font-size: 0.95rem;
    color: var(--text-light);
}

.home-experience-role-location {
    display: flex;
    gap: var(--spacing-sm);
    align-items: baseline;
    flex-wrap: wrap;
    margin-bottom: var(--spacing-sm);
}

.home-experience-role {
    font-size: 1.25rem;
    font-weight: 600;
    margin: 0;
    color: var(--text);
}

.home-experience-location {
    margin: 0;
    color: var(--text-secondary);
    font-size: 0.95rem;
}

.home-experience-list {
    margin: 0 0 var(--spacing-md) 0;
    padding-left: 1.2rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

.home-experience-tags {
    display: flex;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
}

.experience-skill-tag {
    padding: 0.35rem 0.85rem;
    border-radius: 999px;
    background: rgba(37, 99, 235, 0.1);
    color: var(--accent);
    font-size: 0.85rem;
    font-weight: 500;
    border: 1px solid rgba(37, 99, 235, 0.2);
    transition: transform 0.2s ease, box-shadow 0.2s ease, background-color 0.2s ease;
}

.experience-skill-tag:hover {
    background: rgba(37, 99, 235, 0.2);
    box-shadow: 0 0 12px rgba(37, 99, 235, 0.25);
    transform: translateY(-2px);
}


/* ============================================
   Education Section
   ============================================ */

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

.education-item {
    background-color: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: var(--border-radius);
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
    transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
}

.education-item:hover {
    transform: translateY(-6px) scale(1.01);
    box-shadow: var(--shadow-xl);
    border-color: rgba(37, 99, 235, 0.6);
}

.education-card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-sm);
}

.education-school-block {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.education-logo-wrapper {
    width: 48px;
    height: 48px;
    border-radius: 0.4rem;
    overflow: hidden;
    border: 2px solid var(--border);
    box-shadow: var(--shadow-sm);
    background: var(--bg-alt);
    flex-shrink: 0;
}

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

.education-school-name {
    margin: 0;
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text);
}

.education-date {
    margin: 0;
    font-size: 0.95rem;
    color: var(--text-light);
    white-space: nowrap;
}

.education-degree {
    font-size: 1.1rem;
    margin: 0 0 var(--spacing-md) 0;
    color: var(--text-secondary);
    font-weight: 500;
}

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

.education-category {
    margin: 0;
}

.education-category-title {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--accent);
    margin: 0 0 0.25rem 0;
    display: inline-block;
}

.education-category-content {
    color: var(--text-secondary);
    line-height: 1.6;
    margin: 0;
    font-size: 0.9rem;
}

/* ============================================
   Resume & Contact Section
   ============================================ */

.resume-contact-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
    max-width: 800px;
    margin: 0 auto;
}

.resume-contact-item {
    background-color: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: var(--border-radius);
    padding: var(--spacing-lg);
    text-align: center;
    transition: var(--transition);
}

.resume-contact-item:hover {
    box-shadow: var(--shadow-lg);
    border-color: var(--accent);
    transform: translateY(-4px);
}

.resume-contact-title {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-sm);
    color: var(--text);
}

.resume-contact-description {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
    line-height: 1.6;
}

/* ============================================
   Timeline (Experience Page)
   ============================================ */

.timeline {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
    padding: var(--spacing-lg) 0;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 30px;
    top: 0;
    bottom: 0;
    width: 2px;
    background-color: var(--border-color);
}

.timeline-item {
    position: relative;
    padding-left: 80px;
    margin-bottom: var(--spacing-xl);
}

.timeline-item::before {
    content: '';
    position: absolute;
    left: 22px;
    top: 0;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background-color: var(--accent);
    border: 3px solid var(--bg);
    box-shadow: 0 0 0 3px var(--border);
}

.timeline-content {
    background-color: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: var(--border-radius);
    padding: var(--spacing-md);
    box-shadow: var(--shadow-sm);
}

.timeline-header {
    display: flex;
    flex-wrap: wrap;
    align-items: baseline;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
}

.timeline-title {
    font-size: 1.5rem;
    margin: 0;
}

.timeline-company {
    color: var(--primary-color);
    font-weight: 600;
    font-size: 1.125rem;
}

.timeline-date {
    color: var(--text-light);
    font-size: 0.9rem;
    margin-left: auto;
}

.timeline-description {
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: var(--spacing-sm);
}

.timeline-highlights {
    list-style: none;
    padding-left: 0;
}

.timeline-highlights li {
    padding-left: 1.5rem;
    position: relative;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-xs);
    line-height: 1.6;
}

.timeline-highlights li::before {
    content: '→';
    position: absolute;
    left: 0;
    color: var(--accent);
    font-weight: 600;
}

@media (max-width: 768px) {
    .timeline::before {
        left: 15px;
    }

    .timeline-item {
        padding-left: 50px;
    }

    .timeline-item::before {
        left: 7px;
        width: 16px;
        height: 16px;
    }
}

/* ============================================
   Project Detail Page
   ============================================ */

.project-header {
    padding: var(--spacing-xl) 0;
    text-align: center;
    background: linear-gradient(180deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
}

.project-header-title {
    font-size: 3rem;
    margin-bottom: var(--spacing-md);
}

.project-header-badges {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
    justify-content: center;
    margin-bottom: var(--spacing-md);
}

.project-badge {
    padding: 0.5rem 1rem;
    background-color: var(--primary-color);
    color: white;
    border-radius: var(--border-radius);
    font-size: 0.9rem;
    font-weight: 500;
}

.project-summary {
    max-width: 700px;
    margin: 0 auto;
    font-size: 1.125rem;
    line-height: 1.8;
    color: var(--text-secondary);
}

.project-content {
    max-width: 900px;
    margin: 0 auto;
    padding: var(--spacing-xl) 0;
}

.project-section {
    margin-bottom: var(--spacing-xl);
}

.project-section-title {
    font-size: 2rem;
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
    border-bottom: 2px solid var(--border-color);
    padding-bottom: var(--spacing-xs);
}

.project-section-content {
    color: var(--text-secondary);
    line-height: 1.8;
    font-size: 1.0625rem;
}

.project-section-content p {
    margin-bottom: var(--spacing-md);
}

.project-architecture {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: var(--spacing-lg);
    text-align: center;
    margin: var(--spacing-md) 0;
    min-height: 300px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-light);
}

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

/* ============================================
   Resume Page
   ============================================ */

.resume-container {
    max-width: 900px;
    margin: 0 auto;
    padding: var(--spacing-xl) 0;
}

.resume-header {
    text-align: center;
    margin-bottom: var(--spacing-lg);
}

.resume-pdf-container {
    width: 100%;
    height: 800px;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
    margin-bottom: var(--spacing-md);
}

.resume-pdf-container iframe {
    width: 100%;
    height: 100%;
    border: none;
}

.resume-download {
    text-align: center;
}

/* ============================================
   Contact Page
   ============================================ */

.contact-container {
    max-width: 600px;
    margin: 0 auto;
    padding: var(--spacing-xl) 0;
    text-align: center;
}

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

.contact-description {
    font-size: 1.125rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-xl);
    line-height: 1.8;
}

.contact-options {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
}

.contact-option {
    background-color: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: var(--border-radius);
    padding: var(--spacing-md);
    transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease, background-color 0.25s ease;
    display: flex;
    align-items: center;
    justify-content: flex-start;
    gap: var(--spacing-sm);
    text-decoration: none;
    color: var(--text);
}

.contact-option:hover {
    background-color: rgba(37, 99, 235, 0.1);
    border-color: var(--accent);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.contact-option svg {
    width: 24px;
    height: 24px;
}

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

.footer {
    background-color: var(--bg-alt);
    border-top: 1px solid var(--border);
    padding: var(--spacing-lg) 0;
    margin-top: var(--spacing-xl);
    transition: background-color 0.25s ease, border-color 0.25s ease;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

.footer-text {
    color: var(--text-light);
    margin: 0;
    font-size: 0.9rem;
}

.footer-social {
    display: flex;
    gap: var(--spacing-md);
}

.social-link {
    color: var(--text-secondary);
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
}

.social-link:hover {
    color: var(--primary-color);
    transform: translateY(-2px);
}

@media (max-width: 768px) {
    .footer-content {
        flex-direction: column;
        text-align: center;
    }
}

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

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in {
    animation: fadeInUp 0.6s ease-out;
}

/* ============================================
   Back to Top Button
   ============================================ */

.back-to-top {
    position: fixed;
    top: 100px;
    right: 2rem;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background-color: var(--accent);
    color: white;
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-lg);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-20px);
    transition: opacity 0.3s ease, visibility 0.3s ease, transform 0.3s ease, background-color 0.25s ease;
    z-index: 1000;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.back-to-top:hover {
    background-color: var(--primary-dark);
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
}

.back-to-top svg {
    width: 20px;
    height: 20px;
}

/* ============================================
   Mobile Prank Popup (Temporary)
   ============================================ */

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

.text-center {
    text-align: center;
}

.mt-sm {
    margin-top: var(--spacing-sm);
}

.mt-md {
    margin-top: var(--spacing-md);
}

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

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

.mb-md {
    margin-bottom: var(--spacing-md);
}

.mb-lg {
    margin-bottom: var(--spacing-lg);
}
.nav-logo,
.section-title,
.project-title,
.skill-category-title,
.experience-title,
.home-experience-company,
.home-experience-role,
.education-school-name,
.education-category-title,
.resume-contact-title,
.timeline-title,
.timeline-company,
.project-header-title,
.project-section-title {
    font-family: var(--font-heading);
}