/* Import Google Fonts */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=JetBrains+Mono:wght@400;500&display=swap');

:root {
    /* Modern Color System */
    --color-primary: #3B82F6;
    --color-primary-dark: #2563EB;
    --color-accent: #10B981;
    --color-accent-dark: #059669;
    
    /* Neutral Colors */
    --color-background: #FFFFFF;
    --color-surface: #F8FAFC;
    --color-surface-elevated: #FFFFFF;
    --color-border: #E2E8F0;
    --color-border-hover: #CBD5E1;
    
    /* Text Colors */
    --color-text-primary: #0F172A;
    --color-text-secondary: #475569;
    --color-text-tertiary: #64748B;
    --color-text-muted: #94A3B8;
    
    /* Typography */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', Consolas, monospace;
    
    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    --spacing-3xl: 4rem;
    --spacing-4xl: 6rem;
    
    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    
    /* Transitions */
    --transition-fast: 150ms ease-in-out;
    --transition-normal: 250ms ease-in-out;
    --transition-slow: 350ms ease-in-out;
}

:root[data-theme="light"] {
    --color-background: #F6F1E9;
    --color-surface: #FFFFFF;
    --color-surface-elevated: #FFFFFF;
    --color-border: rgba(15, 23, 42, 0.10);
    --color-border-hover: rgba(15, 23, 42, 0.16);
    --color-text-primary: #0B1220;
    --color-text-secondary: #334155;
    --color-text-tertiary: #475569;
    --color-text-muted: #64748B;
}

:root[data-theme="dark"] {
    --color-background: #0B1220;
    --color-surface: #0F1B2D;
    --color-surface-elevated: #0F172A;
    --color-border: rgba(148, 163, 184, 0.28);
    --color-border-hover: rgba(148, 163, 184, 0.42);
    --color-text-primary: #F1F5F9;
    --color-text-secondary: #CBD5E1;
    --color-text-tertiary: #94A3B8;
    --color-text-muted: #64748B;
}

:root[data-theme="dark"] .hero {
    background: radial-gradient(1200px 600px at 50% -10%, rgba(59, 130, 246, 0.22) 0%, rgba(15, 23, 42, 0) 55%),
        linear-gradient(135deg, var(--color-background) 0%, var(--color-surface) 100%);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    line-height: 1.6;
    color: var(--color-text-secondary);
    background-color: var(--color-background);
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

:root[data-theme="light"] .hero {
    background: radial-gradient(1200px 600px at 50% -10%, rgba(59, 130, 246, 0.18) 0%, rgba(246, 241, 233, 0) 55%),
        linear-gradient(135deg, var(--color-background) 0%, #F1E9DD 100%);
}

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

h1 {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 700;
    letter-spacing: -0.02em;
}

h2 {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 600;
    letter-spacing: -0.01em;
}

h3 {
    font-size: clamp(1.5rem, 3vw, 2rem);
    font-weight: 600;
}

h4 {
    font-size: 1.25rem;
    font-weight: 500;
}

p {
    margin-bottom: var(--spacing-md);
    max-width: 65ch;
}

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

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

code {
    font-family: var(--font-mono);
    background-color: var(--color-surface);
    padding: 0.125rem 0.25rem;
    border-radius: var(--radius-sm);
    font-size: 0.875em;
}

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

.container-sm {
    max-width: 800px;
    margin: 0 auto;
    padding: 0 var(--spacing-xl);
}

.section {
    padding: var(--spacing-4xl) 0;
}

.section-sm {
    padding: var(--spacing-3xl) 0;
}

/* Navigation */
nav {
    background-color: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--color-border);
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    transition: all var(--transition-normal);
}

:root[data-theme="dark"] nav {
    background-color: rgba(15, 23, 42, 0.85);
    border-bottom: 1px solid var(--color-border);
}

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

.nav-logo {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--color-text-primary);
    text-decoration: none;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: var(--spacing-xl);
    align-items: center;
}

.navbar {
    position: relative;
    min-height: 72px;
    display: flex;
    align-items: center;
    justify-content: center;
}

#nav-links {
    width: min(760px, 100%);
    display: flex;
    justify-content: space-evenly;
    align-items: center;
    gap: var(--spacing-lg);
}

.nav-link {
    color: var(--color-text-secondary);
    font-weight: 500;
    font-size: 0.95rem;
    transition: color var(--transition-fast);
    position: relative;
}

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

.nav-link::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: -4px;
    left: 50%;
    background-color: var(--color-primary);
    transition: all var(--transition-fast);
    transform: translateX(-50%);
}

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

.mobile-menu-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--spacing-sm);
}

.hamburger {
    width: 24px;
    height: 2px;
    background-color: var(--color-text-primary);
    position: relative;
    transition: all var(--transition-fast);
}

.hamburger::before,
.hamburger::after {
    content: '';
    position: absolute;
    width: 24px;
    height: 2px;
    background-color: var(--color-text-primary);
    transition: all var(--transition-fast);
}

.hamburger::before {
    top: -8px;
}

.hamburger::after {
    bottom: -8px;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-lg);
    border: none;
    border-radius: var(--radius-md);
    font-family: inherit;
    font-size: 0.95rem;
    font-weight: 500;
    text-decoration: none;
    cursor: pointer;
    transition: all var(--transition-fast);
    white-space: nowrap;
}

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

.btn-primary:hover {
    background-color: var(--color-primary-dark);
    color: white;
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

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

.btn-secondary:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
    transform: translateY(-1px);
}

.btn-ghost {
    background-color: transparent;
    color: var(--color-text-secondary);
    padding: var(--spacing-sm) var(--spacing-md);
}

.btn-ghost:hover {
    background-color: var(--color-surface);
    color: var(--color-text-primary);
}

/* Cards */
.card {
    background-color: var(--color-surface-elevated);
    border: none;
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-normal);
    position: relative;
}

.card:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-2px);
}

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

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

.card-subtitle {
    color: var(--color-text-tertiary);
    font-size: 0.9rem;
    margin-bottom: var(--spacing-md);
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    position: relative;
    background: linear-gradient(135deg, var(--color-background) 0%, var(--color-surface) 100%);
    padding-top: 80px;
}

.hero-content {
    max-width: 800px;
    padding: var(--spacing-2xl);
}

.hero-subtitle {
    font-size: 1.1rem;
    color: var(--color-primary);
    font-weight: 500;
    margin-bottom: var(--spacing-md);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    min-height: 1.5em;
}

#cursor {
    color: var(--color-primary);
    animation: blink 1s infinite;
    font-weight: 400;
}

@keyframes blink {
    0%, 50% { opacity: 1; }
    51%, 100% { opacity: 0; }
}

.hero-title {
    margin-bottom: var(--spacing-lg);
    background: linear-gradient(135deg, var(--color-text-primary) 0%, var(--color-primary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-description {
    font-size: 1.25rem;
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-2xl);
    max-width: none;
}

.hero-actions {
    display: flex;
    gap: var(--spacing-lg);
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: var(--spacing-2xl);
}

.hero-social {
    display: flex;
    gap: var(--spacing-lg);
    justify-content: center;
}

.social-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    background-color: var(--color-surface);
    border: 2px solid var(--color-border);
    border-radius: var(--radius-md);
    color: var(--color-text-secondary);
    transition: all var(--transition-fast);
}

/* Theme toggle */
.theme-toggle {
    position: fixed;
    top: 16px;
    right: 16px;
    z-index: 1100;
    padding: 0;
    border-radius: 999px;
    border: 2px solid rgba(96, 165, 250, 0.55);
    background: rgba(255, 255, 255, 0.75);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    color: var(--color-text-primary);
    cursor: pointer;
    transition: all var(--transition-fast);
    box-shadow: 0 10px 25px rgba(2, 6, 23, 0.10);
}

.theme-toggle:hover {
    border-color: rgba(96, 165, 250, 0.9);
    transform: translateY(-1px);
}

.theme-toggle:focus-visible {
    outline: 3px solid rgba(59, 130, 246, 0.45);
    outline-offset: 3px;
}

:root[data-theme="dark"] .theme-toggle {
    background: rgba(15, 23, 42, 0.7);
    box-shadow: 0 12px 30px rgba(0, 0, 0, 0.35);
}

@media (max-width: 768px) {
    .theme-toggle {
        top: 12px;
        right: 12px;
    }
}

.theme-toggle-track {
    width: 54px;
    height: 30px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    align-items: center;
    padding: 0 8px;
    position: relative;
    border-radius: 999px;
    background: rgba(15, 23, 42, 0.06);
    box-shadow: inset 0 0 0 1px rgba(15, 23, 42, 0.08);
}

:root[data-theme="dark"] .theme-toggle-track {
    background: rgba(148, 163, 184, 0.10);
    box-shadow: inset 0 0 0 1px rgba(148, 163, 184, 0.16);
}

.theme-toggle-thumb {
    width: 22px;
    height: 22px;
    border-radius: 999px;
    background: linear-gradient(135deg, #93C5FD 0%, #3B82F6 60%, #2563EB 100%);
    box-shadow: 0 6px 14px rgba(37, 99, 235, 0.25);
    position: absolute;
    top: 50%;
    left: 4px;
    transform: translateY(-50%);
    transition: transform var(--transition-normal);
}

.theme-toggle-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 18px;
    height: 18px;
    color: var(--color-text-tertiary);
    transition: color var(--transition-fast), opacity var(--transition-fast);
    opacity: 0.9;
}

:root[data-theme="dark"] .theme-toggle-icon--moon {
    color: #93C5FD;
    opacity: 1;
}

:root[data-theme="dark"] .theme-toggle-icon--sun {
    color: var(--color-text-tertiary);
    opacity: 0.6;
}

:root[data-theme="light"] .theme-toggle-icon--sun,
:root:not([data-theme]) .theme-toggle-icon--sun {
    color: #2563EB;
    opacity: 1;
}

:root[data-theme="light"] .theme-toggle-icon--moon,
:root:not([data-theme]) .theme-toggle-icon--moon {
    color: var(--color-text-tertiary);
    opacity: 0.6;
}

:root[data-theme="dark"] .theme-toggle-thumb {
    transform: translateY(-50%) translateX(24px);
}

@media (prefers-reduced-motion: reduce) {
    .theme-toggle-thumb,
    .theme-toggle-icon {
        transition: none;
    }
}

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

/* Experience Section */
.experience-grid {
    display: grid;
    gap: var(--spacing-xl);
}

.experience-logo {
    width: 96px;
    height: 96px;
    max-width: 100%;
    object-fit: contain;
    flex: 0 0 auto;
    border-radius: var(--radius-md);
}

.experience-logo--centered {
    margin-top: auto;
    margin-bottom: auto;
}

.experience-body {
    display: flex;
    align-items: flex-start;
}

.experience-item {
    display: flex;
    gap: var(--spacing-lg);
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    border: none;
    transition: all var(--transition-normal);
    position: relative;
}

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

.experience-date {
    flex-shrink: 0;
    width: 170px;
    color: var(--color-text-tertiary);
    font-size: 0.9rem;
    font-weight: 500;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-sm);
    text-align: center;
}

.experience-date > div {
    white-space: nowrap;
}

.experience-content h4 {
    color: var(--color-primary);
    margin-bottom: var(--spacing-xs);
}

.experience-company-link {
    color: inherit;
    text-decoration: none;
}

.experience-company-link:hover {
    text-decoration: underline;
}

.experience-company-link:focus-visible {
    outline: 3px solid rgba(59, 130, 246, 0.45);
    outline-offset: 3px;
    border-radius: var(--radius-sm);
}

.experience-content h3 {
    margin-bottom: var(--spacing-sm);
}

.experience-content p {
    max-width: none;
    margin-bottom: 0;
}

/* Projects Section */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--spacing-xl);
}

.project-card {
    background-color: var(--color-surface-elevated);
    border: none;
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: all var(--transition-normal);
    position: relative;
}

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

/* Gradient border for cards */
.card::before,
.experience-item::before,
.project-card::before {
    content: '';
    position: absolute;
    inset: 0;
    padding: 2px;
    border-radius: inherit;
    background: linear-gradient(135deg, #60A5FA 0%, #3B82F6 45%, #2563EB 100%);
    pointer-events: none;
    z-index: 0;
    -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    -webkit-mask-composite: xor;
    mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    mask-composite: exclude;
}

.card:hover::before,
.experience-item:hover::before,
.project-card:hover::before {
    background: linear-gradient(135deg, #93C5FD 0%, #60A5FA 45%, #3B82F6 100%);
}

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

.project-image {
    display: block;
    width: calc(100% - (var(--spacing-lg) * 2));
    height: 160px;
    margin: var(--spacing-lg) auto 0;
    border-radius: var(--radius-md);
    object-fit: contain;
    background-color: var(--color-surface);
}

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

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

.project-description {
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-lg);
}

.project-tech {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
    justify-content: center;
}

.tech-tag {
    background-color: var(--color-surface);
    color: var(--color-text-tertiary);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-sm);
    font-size: 0.875rem;
    border: 1px solid var(--color-border);
}

.project-links {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
}

/* Skills Section */
.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-xl);
}

.skill-category {
    background-color: var(--color-surface-elevated);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    position: relative;
}

.skill-category::before {
    content: '';
    position: absolute;
    inset: 0;
    padding: 2px;
    border-radius: inherit;
    background: linear-gradient(135deg, #60A5FA 0%, #3B82F6 45%, #2563EB 100%);
    pointer-events: none;
    z-index: 0;
    -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    -webkit-mask-composite: xor;
    mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    mask-composite: exclude;
}

.skill-category > * {
    position: relative;
    z-index: 1;
}

.skill-category h3 {
    margin-bottom: var(--spacing-lg);
    color: var(--color-primary);
}

.skill-list {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

.skill-item {
    background-color: var(--color-surface);
    border: 1px solid var(--color-border);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-md);
    font-size: 0.9rem;
    font-weight: 500;
    transition: all var(--transition-fast);
}

.skill-item:hover {
    background-color: var(--color-primary);
    color: white;
    border-color: var(--color-primary);
    transform: translateY(-1px);
}

/* About Section */
.about-content {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.about-content p {
    font-size: 1.1rem;
    max-width: none;
    margin-bottom: var(--spacing-lg);
}

.education-card {
    background-color: var(--color-surface);
    border: 2px solid var(--color-primary);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    margin: var(--spacing-2xl) auto;
    max-width: 600px;
    text-align: center;
}

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

.education-card .gpa {
    font-weight: 600;
    color: var(--color-accent);
}

/* Contact Section */
.contact-content {
    text-align: center;
    max-width: 600px;
    margin: 0 auto;
}

.contact-icons {
    display: flex;
    justify-content: center;
    gap: var(--spacing-2xl);
    margin-top: var(--spacing-2xl);
}

.contact-icon-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 60px;
    height: 60px;
    background-color: var(--color-surface);
    border: 2px solid var(--color-border);
    border-radius: var(--radius-md);
    color: var(--color-text-secondary);
    transition: all var(--transition-fast);
}

.contact-icon-link:hover {
    background-color: var(--color-primary);
    border-color: var(--color-primary);
    color: white;
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

/* Footer */
footer {
    background-color: var(--color-surface-elevated);
    color: var(--color-text-tertiary);
    text-align: center;
    padding: var(--spacing-2xl) 0;
    border-top: 1px solid var(--color-border);
}

footer p {
    max-width: none;
    margin-bottom: 0;
}

/* Mobile Navigation */
@media (max-width: 768px) {
    .navbar {
        justify-content: flex-end;
        min-height: 64px;
    }

    #mobile-menu-toggle {
        position: relative;
        z-index: 1001;
    }

    #nav-links {
        width: 100%;
        justify-content: flex-start;
    }

    .nav-links {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background-color: rgba(255, 255, 255, 0.95);
        backdrop-filter: blur(12px);
        -webkit-backdrop-filter: blur(12px);
        border-top: 1px solid var(--color-border);
        flex-direction: column;
        gap: 0;
        padding: var(--spacing-md) 0;
    }
    
    .nav-links.active {
        display: flex;
    }
    
    .nav-links li {
        margin: 0;
    }
    
    .nav-link {
        padding: var(--spacing-md) var(--spacing-xl);
        display: block;
        border-bottom: 1px solid var(--color-border);
    }
    
    .nav-link:last-child {
        border-bottom: none;
    }
    
    .mobile-menu-toggle {
        display: block;
    }
    
    .container,
    .container-sm {
        padding: 0 var(--spacing-md);
    }
    
    .section {
        padding: var(--spacing-2xl) 0;
    }
    
    .hero-actions {
        flex-direction: column;
        align-items: center;
    }
    
    .hero-social {
        gap: var(--spacing-md);
    }
    
    .projects-grid {
        grid-template-columns: 1fr;
    }
    
    .skills-grid {
        grid-template-columns: 1fr;
    }
    
    .experience-item {
        flex-direction: column;
        gap: var(--spacing-md);
    }
    
    .experience-date {
        width: auto;
    }
    
    .contact-info {
        flex-direction: column;
        gap: var(--spacing-lg);
    }
}

@media (max-width: 480px) {
    .hero-content {
        padding: var(--spacing-md);
    }
    
    .card {
        padding: var(--spacing-lg);
    }
    
    .project-content {
        padding: var(--spacing-lg);
    }
}

/* Project Detail Pages */
.project-meta {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: var(--spacing-lg);
    padding: var(--spacing-xl);
    background-color: var(--color-surface);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
}

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

.meta-item h4 {
    color: var(--color-primary);
    font-size: 0.9rem;
    margin-bottom: var(--spacing-xs);
}

.meta-item p {
    margin-bottom: 0;
    font-weight: 500;
}

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

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

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

.feature-card {
    background-color: var(--color-surface);
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
}

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

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

.tech-card {
    background-color: var(--color-surface-elevated);
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
}

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

.challenges-section {
    max-width: 800px;
    margin: 0 auto;
}

.challenge-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: var(--spacing-lg);
}

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

.challenge-item h4 {
    color: var(--color-accent);
    margin-bottom: var(--spacing-sm);
}

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

.improvement-item {
    background-color: var(--color-surface);
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
}

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

/* Responsive adjustments for project pages */
@media (max-width: 768px) {
    .project-demo {
        grid-template-columns: 1fr;
        gap: var(--spacing-xl);
    }
    
    .project-meta {
        grid-template-columns: 1fr;
        text-align: left;
    }
    
    .meta-item {
        text-align: left;
    }
    
    .challenge-grid {
        grid-template-columns: 1fr;
    }
}

/* Utility Classes */
.text-center {
    text-align: center;
}

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

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

.text-muted {
    color: var(--color-text-muted);
}

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

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

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