/* CSS Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}


/* CSS Custom Properties for Theme */
:root {
    /* Colors - White Minimalist Theme */
    --primary-color: #1a1a1a;
    --secondary-color: #666666;
    --accent-color: #888888;
    --bg-primary: #ffffff;
    --bg-secondary: #fafafa;
    --bg-card: #ffffff;
    --text-primary: #1a1a1a;
    --text-secondary: #666666;
    --text-muted: #888888;

    /* Glassmorphism */
    --glass-bg: #ffffff;
    --glass-border: #e5e5e5;
    --glass-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);

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

    /* Typography */
    --font-primary: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    --font-display: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1.0625rem;
    --font-size-lg: 1.25rem;
    --font-size-xl: 1.375rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 2.25rem;
    --font-size-4xl: 3rem;
    --font-size-5xl: 4.125rem;

    /* Transitions */
    --transition-base: none;
    --transition-slow: none;

    /* Border Radius */
    --radius-sm: 0.25rem;
    --radius-md: 0.5rem;
    --radius-lg: 1rem;
    --radius-xl: 1.5rem;

    /* Z-index */
    --z-canvas: 1;
    --z-content: 10;
    --z-nav: 100;
    --z-menu: 500;
    --z-modal: 1000;
}

/* Base Styles */
html {
    scroll-behavior: smooth;
    font-synthesis: none;
    text-rendering: optimizeLegibility;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-primary);
    font-size: var(--font-size-base);
    line-height: 1.7;
    color: var(--text-primary);
    background-color: var(--bg-primary);
    overflow-x: hidden;
    position: relative;
    min-height: 100vh;
    font-weight: 400;
    font-size-adjust: 0.5116; /* Match Inter's aspect ratio to prevent layout shift */
}

body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    pointer-events: none;
    opacity: 0.03;
    background-image: url('data:image/svg+xml;utf8,<svg viewBox="0 0 200 200" xmlns="http://www.w3.org/2000/svg"><filter id="noise"><feTurbulence type="fractalNoise" baseFrequency="0.9" numOctaves="4" stitchTiles="stitch"/></filter><rect width="100%" height="100%" filter="url(%23noise)"/></svg>');
    background-repeat: repeat;
}

/* Background Effects Container */
#background-effects {
    display: none;
}

/* Container */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* Section Styles */
.section {
    padding: var(--spacing-2xl) 0;
    position: relative;
    z-index: var(--z-content);
    opacity: 1;
    transition: opacity 0.3s ease;
}

.section.hidden {
    display: none;
    opacity: 0;
}

/* View System */
.view {
    display: none !important;
    min-height: 100vh;
}

.view.active {
    display: block !important;
    animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.section-title {
    font-size: 6rem;
    font-weight: 300;
    text-align: left;
    margin-bottom: var(--spacing-xl);
    color: var(--text-primary);
    line-height: 1.3;
}

/* Add separator line for Portfolio section title */
.projects-overview .section-title {
    position: relative;
    padding-bottom: var(--spacing-lg);
}

.projects-overview .section-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 1px;
    background: linear-gradient(90deg,
        rgba(0, 0, 0, 0.2) 0%,
        rgba(0, 0, 0, 0.15) 50%,
        rgba(0, 0, 0, 0) 100%);
}

/* Glass Card Effect */
.glass-card {
    background: var(--glass-bg);
    border-radius: var(--radius-lg);
    border: 1px solid var(--glass-border);
    padding: var(--spacing-lg);
    box-shadow: var(--glass-shadow);
    transition: all 0.3s ease;
}

.glass-card:hover {
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.12);
    border-color: #d0d0d0;
}


/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    z-index: var(--z-nav);
    padding: var(--spacing-sm) 0;
    min-height: 60px;
    height: auto;
    transition: box-shadow 0.3s ease;
    border-bottom: 1px solid var(--glass-border);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
    contain: layout;
    will-change: box-shadow;
}

.nav-container {
    display: flex;
    justify-content: flex-end;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* Hamburger Button */
.hamburger-wrapper {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    border: 2px solid var(--text-primary);
    border-radius: var(--radius-md);
    padding: var(--spacing-xs) var(--spacing-sm);
    cursor: pointer;
    transition: all 0.3s ease;
}

.hamburger-wrapper:hover {
    background: var(--bg-secondary);
}

.menu-text {
    font-size: var(--font-size-base);
    color: var(--text-primary);
    font-weight: 400;
    line-height: 1;
}

.hamburger-btn {
    display: flex;
    flex-direction: column;
    gap: 4px;
    width: 18px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0;
    z-index: calc(var(--z-menu) + 10);
    position: relative;
    transition: all 0.3s ease;
}

.hamburger-line {
    width: 100%;
    height: 2px;
    background: var(--text-primary);
    transition: all 0.3s ease;
    transform-origin: center;
    display: block;
    flex-shrink: 0;
}

.hamburger-btn:hover .hamburger-line {
    background: var(--text-secondary);
}

.hamburger-btn:focus-visible {
    outline: 2px solid var(--text-primary);
    outline-offset: 4px;
    border-radius: var(--radius-sm);
}

.hamburger-btn.active .hamburger-line:nth-child(1) {
    transform: translateY(6px) rotate(45deg);
}

.hamburger-btn.active .hamburger-line:nth-child(2) {
    opacity: 0;
}

.hamburger-btn.active .hamburger-line:nth-child(3) {
    transform: translateY(-6px) rotate(-45deg);
}

/* Menu Panel - Full Screen Overlay */
.menu-panel {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: var(--z-menu);
    pointer-events: none;
    visibility: hidden;
}

.menu-panel.active {
    pointer-events: auto;
    visibility: visible;
}

.menu-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(255, 255, 255, 0.92);
    opacity: 0;
    transition: opacity 0.5s ease;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

.menu-panel.active .menu-overlay {
    opacity: 1;
}

.menu-content {
    position: relative;
    width: 100%;
    height: 100%;
    opacity: 0;
    transition: opacity 0.5s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-2xl);
}

.menu-panel.active .menu-content {
    opacity: 1;
}

.menu-inner {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-2xl);
    max-width: 1200px;
    width: 100%;
    align-items: center;
}

.menu-close-btn {
    position: absolute;
    top: var(--spacing-xl);
    right: var(--spacing-xl);
    width: 48px;
    height: 48px;
    background: none;
    border: none;
    cursor: pointer;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
    border-radius: 50%;
    z-index: 10;
}

.menu-close-btn:hover {
    background: var(--bg-secondary);
    transform: rotate(90deg);
}

.menu-close-btn:focus-visible {
    outline: 2px solid var(--text-primary);
    outline-offset: 2px;
}

.menu-nav {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
    justify-content: center;
}

.menu-link {
    font-size: 3.5rem;
    font-weight: 300;
    color: var(--text-primary);
    text-decoration: none;
    padding: var(--spacing-xs) 0;
    transition: all 0.4s ease;
    position: relative;
    display: inline-block;
    width: fit-content;
}

.menu-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 1px;
    background: var(--text-primary);
    transition: width 0.4s ease;
}

.menu-link:hover::after,
.menu-link.active::after {
    width: 100%;
}

.menu-link:hover {
    color: var(--text-secondary);
    transform: translateX(8px);
}

.menu-link:focus-visible {
    outline: 2px solid var(--text-primary);
    outline-offset: 4px;
    border-radius: var(--radius-sm);
}

/* Menu Contact Section */
.menu-contact {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    padding-left: var(--spacing-2xl);
    border-left: 1px solid var(--glass-border);
}

.contact-title {
    font-size: 3.5rem;
    font-weight: 300;
    color: var(--text-primary);
    margin-bottom: var(--spacing-xs);
}

.contact-subtitle {
    font-size: var(--font-size-base);
    font-weight: 300;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
}

.social-links {
    display: flex;
    flex-direction: row;
    gap: var(--spacing-lg);
}

.social-link {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: var(--font-size-lg);
    font-weight: 300;
    color: var(--text-primary);
    text-decoration: none;
    padding: var(--spacing-xs) 0;
    transition: all 0.3s ease;
    width: fit-content;
}

.social-link svg {
    width: 32px;
    height: 32px;
}

.social-link svg {
    transition: transform 0.3s ease;
}

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

.social-link:hover svg {
    transform: translateX(4px);
}

.social-link:focus-visible {
    outline: 2px solid var(--text-primary);
    outline-offset: 4px;
    border-radius: var(--radius-sm);
}

/* Responsive Menu */
@media (max-width: 768px) {
    .menu-inner {
        grid-template-columns: 1fr;
        gap: var(--spacing-xl);
    }

    .menu-contact {
        padding-left: 0;
        border-left: none;
        border-top: 1px solid var(--glass-border);
        padding-top: var(--spacing-xl);
    }

    .menu-link {
        font-size: 2.5rem;
    }

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

    .menu-close-btn {
        top: var(--spacing-md);
        right: var(--spacing-md);
    }
}

body.menu-open {
    overflow: hidden;
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: flex-end;
    justify-content: flex-start;
    padding-top: calc(var(--spacing-2xl) + 60px);
    padding-bottom: var(--spacing-2xl);
    position: relative;
}

.hero-content {
    display: flex;
    align-items: flex-end;
    justify-content: flex-start;
    max-width: 1200px;
    width: 100%;
    gap: var(--spacing-xl);
}

.hero-text-content {
    text-align: left;
}

.hero-title {
    font-size: 6rem;
    font-weight: 300;
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
    line-height: 1.1;
}

.hero-tagline {
    font-size: 1.75rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
    font-weight: 400;
    line-height: 1.5;
}

.hero-intro {
    font-size: var(--font-size-base);
    color: var(--text-secondary);
    line-height: 1.7;
    max-width: 550px;
    font-weight: 400;
}

.hero-image-container {
    position: absolute;
    bottom: var(--spacing-2xl);
    right: var(--spacing-2xl);
    width: 300px;
    height: 300px;
    border-radius: var(--radius-lg);
    overflow: hidden;
    border: 1px solid var(--glass-border);
    box-shadow: var(--glass-shadow);
}

.hero-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}


/* Featured Work Section in Home View */
.featured-work-section {
    margin-top: var(--spacing-2xl);
    padding-top: var(--spacing-2xl);
}

/* Minimal Project Cards for Home View */
.project-card-minimal {
    display: block;
    background: var(--bg-primary);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    text-decoration: none;
    transition: all 0.3s ease;
    cursor: pointer;
}

.project-card-minimal:hover {
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    border-color: #d0d0d0;
    transform: translateY(-2px);
}

.project-card-minimal:focus-visible {
    outline: 2px solid var(--text-primary);
    outline-offset: 2px;
}

.project-card-minimal-title {
    font-size: var(--font-size-xl);
    font-weight: 400;
    color: var(--text-primary);
    margin-bottom: var(--spacing-xs);
    line-height: 1.4;
}

.project-card-minimal-tagline {
    font-size: var(--font-size-base);
    color: var(--text-secondary);
    line-height: 1.6;
    margin: 0;
    font-weight: 400;
}

/* Intro Section with Black Background */
.intro-section {
    min-height: 100vh;
    display: none;
    align-items: center;
    justify-content: center;
    background: #000000;
    color: #ffffff;
    position: relative;
    opacity: 0;
}

.intro-section.visible {
    display: flex;
    animation: fadeInIntroSection 1s ease 0.3s forwards;
}

@keyframes fadeInIntroSection {
    from {
        opacity: 0;
        transform: scale(0.8);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

.intro-section.page-exit {
    animation: fadeOutIntroSection 500ms ease-out forwards;
}

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

.intro-content {
    max-width: 1800px;
    width: 96%;
    text-align: center;
    background: rgba(20, 20, 20, 0.8);
    padding: 4rem 8rem;
    border-radius: var(--radius-xl);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.intro-text {
    font-size: 1.625rem;
    line-height: 1.9;
    color: #e5e5e5;
    font-weight: 300;
    animation: fadeInText 900ms ease-out 0.5s forwards;
    opacity: 0;
}

@keyframes fadeInText {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.emoji-wave {
    display: inline-block;
    animation: wave 2s ease-in-out infinite;
    transform-origin: 70% 70%;
}

@keyframes wave {
    0%, 100% {
        transform: rotate(0deg);
    }
    10%, 30% {
        transform: rotate(14deg);
    }
    20%, 40% {
        transform: rotate(-8deg);
    }
    50% {
        transform: rotate(0deg);
    }
}

.highlight-badge {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    border-radius: var(--radius-md);
    font-weight: 500;
    transition: all 0.3s ease;
}

.highlight-green {
    background: rgba(16, 185, 129, 0.2);
    color: #34d399;
    border: 1px solid rgba(16, 185, 129, 0.3);
}

.highlight-purple {
    background: rgba(139, 92, 246, 0.2);
    color: #a78bfa;
    border: 1px solid rgba(139, 92, 246, 0.3);
}

.highlight-badge:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

/* Buttons */
.btn {
    display: inline-block;
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: var(--radius-md);
    text-decoration: none;
    font-weight: 600;
    position: relative;
    overflow: hidden;
    cursor: pointer;
    border: none;
    font-size: var(--font-size-base);
}

/* Focus visible for keyboard navigation */
.btn:focus-visible,
.project-link:focus-visible,
.institution-link:focus-visible {
    outline: 2px solid var(--text-primary);
    outline-offset: 2px;
}

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

.btn-primary:hover {
    background: var(--text-secondary);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.btn-secondary {
    background: transparent;
    color: var(--text-primary);
    border: 1px solid var(--glass-border);
}

.btn-secondary:hover {
    background: var(--bg-secondary);
    border-color: var(--text-secondary);
    color: var(--text-primary);
}

.btn-small {
    padding: var(--spacing-xs) var(--spacing-md);
    font-size: var(--font-size-sm);
    background: var(--text-primary);
    color: var(--bg-primary);
    border-radius: var(--radius-md);
    text-decoration: none;
    display: inline-block;
}

.btn-small:hover {
    background: var(--text-secondary);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

/* Section Divider */
.section-divider {
    border: none;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--glass-border), transparent);
    margin: var(--spacing-lg) 0;
}

/* Inline Links */
.inline-link {
    color: var(--text-primary);
    text-decoration: underline;
    transition: color 0.3s ease;
}

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

/* Project Buttons */
.project-buttons {
    display: flex;
    gap: var(--spacing-sm);
    margin-top: auto;
    flex-wrap: wrap;
}

/* Skills Icon Grid */
.skills-icon-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
}

.skill-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md);
    background: var(--bg-secondary);
    border-radius: var(--radius-md);
    border: 1px solid var(--glass-border);
    transition: background 0.3s ease, transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
    cursor: default;
    contain: layout style; /* Prevent layout shifts */
}

.skill-item:hover {
    background: #ffffff;
    transform: translateY(-3px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    border-color: #d0d0d0;
}

.skill-icon-img {
    width: 28px;
    height: 28px;
    flex-shrink: 0;
    object-fit: contain;
}

.skill-name {
    font-size: var(--font-size-base);
    color: var(--text-primary);
    font-weight: 500;
    line-height: 1.4;
    min-height: 1.4em; /* Prevent layout shift during font load */
}

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

/* About Section - Multi-Section Layout */
.about-multi-section {
    padding: 0;
}

.about-section {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-2xl) 0;
    position: relative;
    overflow: hidden;
}

/* Background overlay for animated colors */
.about-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: transparent;
    transition: background-color 0.8s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: -1;
}

/* Background colors when sections are in view */
.about-me-section.in-view::before {
    background-color: #f5f3f0;
}

.experience-section.in-view::before {
    background-color: #b8d4e3;
}

.education-section.in-view::before {
    background-color: #404040;
}

.interests-section.in-view::before {
    background-color: #c4a5d9;
}

/* Special padding for the first section */
.about-me-section {
    padding-top: calc(var(--spacing-2xl) + 60px);
}

/* Fade in animation for content when section comes into view */
.about-section .container {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease-out, transform 0.8s ease-out;
    transition-delay: 0.2s;
}

.about-section.in-view .container {
    opacity: 1;
    transform: translateY(0);
}

.about-section-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-2xl);
    align-items: center;
    max-width: 1200px;
    width: 100%;
    position: relative;
    z-index: 1;
}

.about-section-content-single {
    max-width: 900px;
    width: 100%;
    position: relative;
    z-index: 1;
}

.about-text-column {
    padding-right: var(--spacing-xl);
}

.about-section-title {
    font-size: 6rem;
    font-weight: 300;
    color: var(--text-primary);
    margin-bottom: var(--spacing-lg);
    line-height: 1.2;
}

.education-section.in-view .about-section-title,
.education-section.in-view .about-section-text,
.education-section.in-view .section-inline-link {
    color: #ffffff;
}

.interests-section .about-section-title {
    font-weight: 300;
}

.about-section-description {
    font-size: var(--font-size-lg);
    line-height: 1.7;
    color: var(--text-secondary);
    font-weight: 400;
}

.about-section-text {
    font-size: var(--font-size-lg);
    line-height: 1.8;
    color: var(--text-primary);
    font-weight: 400;
    margin-bottom: var(--spacing-lg);
}

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

.section-inline-link {
    color: var(--text-primary);
    text-decoration: underline;
    text-decoration-thickness: 2px;
    text-underline-offset: 3px;
    transition: all 0.3s ease;
    font-weight: 500;
}

.section-inline-link:hover {
    color: var(--text-secondary);
    text-decoration-thickness: 3px;
}

.education-section.in-view .section-inline-link {
    color: #ffffff;
    text-decoration-color: rgba(255, 255, 255, 0.6);
}

.education-section.in-view .section-inline-link:hover {
    color: #e5e5e5;
    text-decoration-color: rgba(255, 255, 255, 0.9);
}

.about-profile-card {
    background: #ffffff;
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
    text-align: center;
    max-width: 320px;
    margin-left: auto;
}

.profile-card-image {
    width: 180px;
    height: 180px;
    border-radius: 50%;
    object-fit: cover;
    margin-bottom: var(--spacing-md);
    border: 4px solid #f5f3f0;
}

.profile-card-name {
    font-size: var(--font-size-xl);
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
}

.profile-social-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: var(--bg-secondary);
    border-radius: 50%;
    color: var(--text-primary);
    transition: all 0.3s ease;
}

.profile-social-link:hover {
    background: var(--text-primary);
    color: #ffffff;
    transform: translateY(-2px);
}

.profile-social-link:focus-visible {
    outline: 2px solid var(--text-primary);
    outline-offset: 2px;
}

/* Services Multi-Section Layout */
.services-multi-section {
    padding: 0;
}

.services-breadcrumb-section {
    padding: calc(var(--spacing-xl) + 60px) 0 var(--spacing-sm) 0;
}

.services-header-section {
    padding: var(--spacing-lg) 0 var(--spacing-md) 0;
}

.services-main-title {
    font-size: 6rem;
    font-weight: 300;
    color: var(--text-primary);
    margin: 0;
    line-height: 1.1;
    text-align: left;
    font-family: var(--font-primary);
    letter-spacing: -0.02em;
    position: relative;
    padding-bottom: var(--spacing-md);
}

.services-main-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 1px;
    background: linear-gradient(90deg,
        rgba(0, 0, 0, 0.2) 0%,
        rgba(0, 0, 0, 0.15) 50%,
        rgba(0, 0, 0, 0) 100%);
}

.services-hero-section {
    padding: var(--spacing-lg) 0;
    background: var(--bg-primary);
}

.services-hero-title {
    font-size: 2.75rem;
    font-weight: 300;
    color: var(--text-primary);
    text-align: left;
    margin: 0;
    line-height: 1.2;
    font-family: var(--font-display);
    letter-spacing: -0.02em;
    position: relative;
    padding-bottom: var(--spacing-lg);
}

.services-hero-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 1px;
    background: linear-gradient(90deg,
        rgba(0, 0, 0, 0.18) 0%,
        rgba(0, 0, 0, 0.12) 50%,
        rgba(0, 0, 0, 0) 100%);
}

.services-boxes-section {
    padding: var(--spacing-lg) 0;
}

.services-boxes-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-lg);
    max-width: 1200px;
}

.service-box {
    background: transparent;
    border: none;
    border-radius: 0;
    padding: 0;
    text-align: left;
    transition: transform 0.3s ease;
    contain: layout style; /* Prevent layout shifts */
}

.service-box:hover {
    transform: translateX(5px);
}

.service-box-title {
    font-size: var(--font-size-xl);
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
    line-height: 1.3;
    min-height: 1.3em; /* Prevent layout shift during font load */
}

.service-box-description {
    font-size: var(--font-size-base);
    color: var(--text-secondary);
    line-height: 1.7;
    margin: 0;
}

.services-techstack-section {
    padding: var(--spacing-lg) 0;
    background: var(--bg-secondary);
}

.techstack-main-title {
    font-size: 6rem;
    font-weight: 300;
    color: var(--text-primary);
    text-align: left;
    margin-bottom: var(--spacing-sm);
    line-height: 1.2;
    font-family: var(--font-primary);
    letter-spacing: -0.02em;
    position: relative;
    padding-bottom: var(--spacing-md);
}

.techstack-main-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 1px;
    background: linear-gradient(90deg,
        rgba(0, 0, 0, 0.2) 0%,
        rgba(0, 0, 0, 0.15) 50%,
        rgba(0, 0, 0, 0) 100%);
}

.techstack-tagline {
    font-size: var(--font-size-lg);
    color: var(--text-secondary);
    text-align: left;
    margin-bottom: var(--spacing-xl);
    line-height: 1.6;
    font-weight: 400;
}

.skills-categories {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-2xl);
}

.skills-category {
    background: var(--bg-primary);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    box-shadow: var(--glass-shadow);
    transition: box-shadow 0.3s ease, border-color 0.3s ease, transform 0.3s ease;
    contain: layout style; /* Prevent layout shifts */
}

.skills-category:hover {
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.12);
    border-color: #d0d0d0;
}

.category-title {
    font-size: var(--font-size-xl);
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-lg);
    text-align: center;
    line-height: 1.3;
    min-height: 1.3em; /* Prevent layout shift during font load */
}

/* Breadcrumb Navigation */
.breadcrumb {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    margin-bottom: var(--spacing-xl);
    font-size: var(--font-size-sm);
    flex-wrap: wrap;
    padding-top: var(--spacing-sm);
}

.breadcrumb-link {
    color: var(--text-muted);
    text-decoration: none;
    transition: color 0.3s ease;
}

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

.breadcrumb-separator {
    color: var(--text-muted);
    user-select: none;
}

.breadcrumb-current {
    color: var(--text-primary);
    font-weight: 500;
}

.breadcrumb-dark .breadcrumb-link {
    color: rgba(255, 255, 255, 0.5);
}

.breadcrumb-dark .breadcrumb-link:hover {
    color: rgba(255, 255, 255, 0.9);
}

.breadcrumb-dark .breadcrumb-separator {
    color: rgba(255, 255, 255, 0.5);
}

.breadcrumb-dark .breadcrumb-current {
    color: #ffffff;
}

/* Projects Overview Section */
.projects-overview {
    background: var(--bg-primary);
    padding-top: calc(var(--spacing-2xl) + 60px);
}

.section-subtitle {
    text-align: center;
    color: var(--text-secondary);
    font-size: var(--font-size-base);
    margin-bottom: var(--spacing-xl);
    margin-top: calc(var(--spacing-md) * -1);
    font-weight: 400;
    line-height: 1.6;
}

.projects-list {
    max-width: 1400px;
    margin: 0 auto;
}

.project-item {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-2xl);
    align-items: center;
    padding: var(--spacing-2xl) 0;
}

.project-image-column {
    width: 100%;
}

.project-overview-image {
    width: 100%;
    height: auto;
    border-radius: var(--radius-lg);
    border: 1px solid var(--glass-border);
    box-shadow: var(--glass-shadow);
    object-fit: contain;
    display: block;
}

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

.project-item-title {
    font-size: var(--font-size-2xl);
    font-weight: 400;
    color: var(--text-primary);
    margin: 0;
    line-height: 1.3;
}

.project-item-summary {
    font-size: var(--font-size-base);
    color: var(--text-secondary);
    line-height: 1.7;
    margin: 0;
}

.project-view-link {
    font-size: var(--font-size-base);
    color: var(--text-primary);
    text-decoration: underline;
    text-decoration-thickness: 2px;
    text-underline-offset: 3px;
    font-weight: 500;
    transition: all 0.3s ease;
    width: fit-content;
}

.project-view-link:hover {
    color: var(--text-secondary);
    text-decoration-thickness: 3px;
}

.project-divider {
    border: none;
    height: 1px;
    background: var(--glass-border);
    margin: 0;
}

/* Project Detail Pages */
.project-detail {
    background: #1a1a1a;
    color: #ffffff;
    min-height: 100vh;
}

.project-detail .container {
    max-width: 1400px;
}

.project-detail-title {
    font-size: 3rem;
    font-weight: 300;
    color: #ffffff;
    margin-bottom: var(--spacing-md);
    line-height: 1.2;
    position: relative;
    padding-bottom: var(--spacing-lg);
}

.project-detail-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 1px;
    background: linear-gradient(90deg,
        rgba(255, 255, 255, 0.4) 0%,
        rgba(255, 255, 255, 0.25) 50%,
        rgba(255, 255, 255, 0) 100%);
}

.project-code-link {
    font-size: var(--font-size-lg);
    color: #10b981;
    text-decoration: underline;
    text-decoration-thickness: 2px;
    text-underline-offset: 4px;
    font-weight: 500;
    transition: all 0.3s ease;
    display: inline-block;
    margin-bottom: var(--spacing-2xl);
}

.project-code-link:hover {
    color: #34d399;
    text-decoration-thickness: 3px;
}

.project-detail-image-wrapper {
    width: 100%;
    margin-bottom: var(--spacing-2xl);
}

.project-detail-image {
    width: 100%;
    max-width: 100%;
    height: auto;
    border-radius: var(--radius-lg);
    border: 1px solid rgba(255, 255, 255, 0.1);
    object-fit: cover;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.3);
}

.project-tech-stack {
    margin-bottom: var(--spacing-2xl);
}

/* Tech stack separator */
.tech-stack-separator {
    margin: var(--spacing-xl) 0;
    border: none;
    border-top: 1px solid rgba(255, 255, 255, 0.15);
}

/* Project description under tech stack */
.project-description {
    color: rgba(255, 255, 255, 0.85);
    font-size: var(--font-size-lg);
    line-height: 1.7;
}

.project-description p {
    margin: 0;
}

.project-section-heading {
    font-size: var(--font-size-2xl);
    font-weight: 600;
    color: #ffffff;
    margin-bottom: var(--spacing-lg);
    line-height: 1.3;
    position: relative;
    padding-bottom: var(--spacing-sm);
}

.project-section-heading::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 1px;
    background: linear-gradient(90deg,
        rgba(255, 255, 255, 0.35) 0%,
        rgba(255, 255, 255, 0.2) 50%,
        rgba(255, 255, 255, 0) 100%);
}

.tech-stack-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: var(--spacing-md);
}

.tech-item {
    background: rgba(16, 185, 129, 0.15);
    color: #10b981;
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    text-align: center;
    font-size: var(--font-size-base);
    font-weight: 500;
    border: 1px solid rgba(16, 185, 129, 0.3);
    transition: all 0.3s ease;
}

.tech-item:hover {
    background: rgba(16, 185, 129, 0.25);
    transform: translateY(-2px);
}

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

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

.features-list li {
    font-size: var(--font-size-lg);
    color: #e5e5e5;
    line-height: 1.8;
    padding: var(--spacing-sm) 0;
    padding-left: var(--spacing-lg);
    position: relative;
}

.features-list li::before {
    content: '▸';
    position: absolute;
    left: 0;
    color: #10b981;
    font-weight: bold;
}

/* Timeline (Experience & Education) */
.timeline {
    position: relative;
    max-width: 900px;
    margin: 0 auto;
}

/* Experience Timeline - Horizontal Layout */
.experience .timeline {
    display: flex;
    justify-content: center;
    align-items: center;
}

.experience .timeline-item {
    position: relative;
    width: 100%;
}

.experience .timeline-content {
    width: 100%;
    margin: 0;
    padding: var(--spacing-lg);
}

/* Education Timeline - Keep Vertical */
.education .timeline::before {
    content: '';
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    width: 2px;
    height: 100%;
    background: var(--glass-border);
}

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

.education .timeline-item::before {
    content: '';
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    width: 20px;
    height: 20px;
    background: var(--text-primary);
    border-radius: 50%;
    border: 4px solid var(--bg-primary);
    z-index: 1;
}

.education .timeline-content {
    width: calc(50% - 30px);
    margin-left: auto;
}

.education .timeline-item:nth-child(even) .timeline-content {
    margin-left: 0;
    margin-right: auto;
}

.timeline-title {
    font-size: var(--font-size-xl);
    color: var(--text-primary);
    margin-bottom: var(--spacing-xs);
}

.timeline-company {
    font-size: var(--font-size-lg);
    color: var(--text-secondary);
    margin-bottom: var(--spacing-xs);
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.institution-link {
    display: inline-flex;
    align-items: center;
    color: var(--text-muted);
}

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

.link-icon {
    width: 16px;
    height: 16px;
}

.timeline-date {
    font-size: var(--font-size-sm);
    color: var(--text-muted);
    display: block;
    margin-bottom: var(--spacing-sm);
}

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

.timeline-points li {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-xs);
    padding-left: var(--spacing-md);
    position: relative;
}

.timeline-points li::before {
    content: '▸';
    position: absolute;
    left: 0;
    color: var(--text-primary);
}

/* Footer */
.footer {
    padding: var(--spacing-xl) 0;
    background: var(--bg-primary);
    color: var(--text-secondary);
    position: relative;
    z-index: var(--z-content);
    border-top: 1px solid var(--glass-border);
}

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

.footer-copyright {
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
}

.footer-links {
    display: flex;
    gap: var(--spacing-lg);
    flex-wrap: wrap;
}

.footer-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: var(--font-size-sm);
    transition: color 0.3s ease;
}

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

/* Responsive Design */

@media screen and (max-width: 768px) {
    :root {
        --font-size-base: 1rem;
        --font-size-xl: 1.25rem;
        --font-size-3xl: 1.875rem;
        --font-size-4xl: 2.25rem;
        --font-size-5xl: 2.75rem;
    }

    .hero {
        align-items: center;
        padding-bottom: var(--spacing-xl);
    }

    .hero-title {
        font-size: 3rem;
    }

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

    .hero-text-content {
        text-align: left;
    }

    .hero-content {
        flex-direction: column;
        align-items: flex-start;
    }

    .hero-image-container {
        position: static;
        width: 100%;
        max-width: 250px;
        height: 250px;
        margin-top: var(--spacing-lg);
    }

    .intro-content {
        padding: var(--spacing-lg);
    }

    .intro-text {
        font-size: var(--font-size-base);
    }

    .highlight-badge {
        padding: 0.2rem 0.5rem;
        font-size: 0.9rem;
    }

    .about-section-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-xl);
    }

    .about-text-column {
        padding-right: 0;
    }

    .section-title,
    .about-section-title {
        font-size: 3rem;
    }

    .about-section-description,
    .about-section-text {
        font-size: var(--font-size-base);
    }

    .about-profile-card {
        max-width: 100%;
        margin: 0 auto;
    }

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

    .project-detail-title {
        font-size: 2rem;
    }

    .tech-stack-grid {
        grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    }

    .skills-category {
        padding: var(--spacing-lg);
    }

    .category-title {
        font-size: var(--font-size-lg);
    }

    .skills-icon-grid {
        grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
        gap: var(--spacing-sm);
    }

    .skill-item {
        padding: var(--spacing-sm);
        gap: 0.625rem;
    }

    .skill-icon-img {
        width: 24px;
        height: 24px;
    }

    .skill-name {
        font-size: var(--font-size-sm);
    }

    .services-main-title {
        font-size: 3rem;
    }

    .services-hero-title {
        font-size: 1.75rem;
    }

    .techstack-main-title {
        font-size: 3rem;
    }

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

    .service-box {
        padding: var(--spacing-lg);
    }

    .service-box-title {
        font-size: var(--font-size-xl);
    }

    .education .timeline::before {
        left: 30px;
    }

    .education .timeline-item::before {
        left: 30px;
    }

    .timeline-content {
        width: calc(100% - 60px);
        margin-left: 60px !important;
    }

    .experience .timeline-content {
        width: 100%;
        margin: 0 !important;
    }
}

@media screen and (max-width: 480px) {
    :root {
        --font-size-base: 0.9375rem;
        --font-size-xl: 1.125rem;
        --font-size-3xl: 1.5rem;
        --font-size-5xl: 2.25rem;
        --spacing-xl: 2rem;
        --spacing-2xl: 3rem;
    }

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

    .skills-icon-grid {
        grid-template-columns: 1fr;
    }

    .skill-item {
        justify-content: flex-start;
    }
}

/* Project Card Hover Effects */
.project-card {
    position: relative;
    overflow: hidden;
}

.project-card > * {
    position: relative;
    z-index: 1;
}

.project-card:hover {
    border-color: var(--glass-border);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.12);
}

/* Button Hover Animations */
.btn {
    position: relative;
    overflow: hidden;
}