/* Cristina Wu Portfolio - Design System */

:root {
    --cream: #F5F1E8;
    --beige: #E8DCC4;
    --brown: #8B7355;
    --dark-brown: #5C4A3A;
    --black: #1a1a1a;
    --white: #ffffff;
    --gold: #B8956A;
    
    --font-serif: 'Cormorant Garamond', Georgia, serif;
    --font-sans: 'Inter', -apple-system, sans-serif;
    
    --ease: cubic-bezier(0.16, 1, 0.3, 1);
    --ease-out: cubic-bezier(0, 0, 0.2, 1);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-sans);
    background: var(--cream);
    color: var(--black);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
    position: relative;
    width: 100%;
    max-width: 100vw;
}

/* Loading Screen */
.loading-screen {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--white);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10000;
    transition: opacity 0.6s ease, visibility 0.6s ease;
}

.loading-screen.hidden {
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
}

.loading-content {
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 16px;
}

.loading-video {
    max-width: 720px;
    width: min(90vw, 960px);
    height: auto;
    border-radius: 0;
}

.loading-skip {
    appearance: none;
    border: none;
    background: transparent;
    color: var(--black);
    font-family: var(--font-sans);
    font-weight: 500;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    font-size: 11px;
    padding: 8px 16px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.loading-skip:hover {
    color: var(--gold);
    transform: translateY(-2px);
}

/* Animated Background Pattern */
.bg-pattern {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    pointer-events: none;
    overflow: hidden;
    opacity: 0.25;
}

.pattern-svg {
    width: 100%;
    height: 100%;
    opacity: 1;
    transition: transform 0.1s ease-out;
}

#connectionCanvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
}

/* Ensure content is above background */
nav,
.hero,
.section,
.footer {
    position: relative;
    z-index: 1;
}

::selection {
    background: var(--gold);
    color: var(--white);
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

a {
    color: inherit;
    text-decoration: none;
}

/* Layout */
.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 clamp(24px, 5vw, 80px);
    width: 100%;
}

.container-narrow {
    max-width: 1000px;
    margin: 0 auto;
    padding: 0 clamp(24px, 5vw, 80px);
    width: 100%;
}

.section {
    padding: clamp(80px, 12vw, 140px) 0;
}

/* Navigation */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: clamp(20px, 3vh, 30px) clamp(24px, 5vw, 80px);
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: transparent;
    transition: all 0.4s var(--ease);
}

.nav.scrolled {
    background: rgba(245, 241, 232, 0.98);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    padding: clamp(15px, 2vh, 20px) clamp(24px, 5vw, 80px);
    box-shadow: 0 1px 0 rgba(0, 0, 0, 0.05);
}

.nav-logo {
    font-family: var(--font-serif);
    font-size: clamp(1.125rem, 2vw, 1.375rem);
    font-weight: 500;
    color: var(--black);
    transition: opacity 0.3s var(--ease);
}

.nav-logo:hover {
    opacity: 0.7;
}

.nav-menu {
    display: flex;
    gap: clamp(24px, 4vw, 48px);
    align-items: center;
}

.nav-link {
    font-size: 0.9375rem;
    font-weight: 400;
    color: var(--dark-brown);
    transition: color 0.3s var(--ease);
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 1px;
    background: var(--gold);
    transition: width 0.3s var(--ease);
}

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

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

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 6px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}

.nav-toggle span {
    width: 24px;
    height: 2px;
    background: var(--black);
    transition: all 0.3s var(--ease);
}

/* Hero Section */
.hero {
    min-height: 90vh;
    display: flex;
    align-items: center;
    padding: clamp(120px, 15vh, 180px) 0 clamp(60px, 10vh, 100px);
}

.hero-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 clamp(24px, 5vw, 80px);
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: clamp(48px, 8vw, 100px);
    align-items: center;
}

.hero-label {
    font-size: 0.8125rem;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--brown);
    font-weight: 500;
    margin-bottom: 24px;
}

.hero-title {
    font-family: var(--font-serif);
    font-size: clamp(2.5rem, 6vw, 4.5rem);
    line-height: 1.1;
    font-weight: 500;
    color: var(--black);
    margin-bottom: 32px;
    letter-spacing: -0.02em;
}

.hero-description {
    font-size: clamp(1rem, 1.5vw, 1.125rem);
    line-height: 1.7;
    color: var(--dark-brown);
    margin-bottom: 24px;
    max-width: 540px;
}

.hero-cta {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

.btn-primary {
    display: inline-flex;
    align-items: center;
    padding: 16px 32px;
    background: var(--black);
    color: var(--white);
    font-size: 0.9375rem;
    font-weight: 500;
    border-radius: 2px;
    transition: all 0.3s var(--ease);
}

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

.btn-secondary {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 16px 28px;
    background: transparent;
    color: var(--black);
    font-size: 0.9375rem;
    font-weight: 400;
    border: 1px solid var(--brown);
    border-radius: 2px;
    transition: all 0.3s var(--ease);
}

.btn-secondary .arrow {
    width: 18px;
    height: 18px;
    transition: transform 0.3s var(--ease);
}

.btn-secondary:hover {
    background: var(--beige);
    border-color: var(--dark-brown);
}

.btn-secondary:hover .arrow {
    transform: translateX(4px);
}

.hero-image {
    position: relative;
    aspect-ratio: 4/5;
    overflow: hidden;
    border-radius: 2px;
}

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

.hero-badge {
    position: absolute;
    bottom: 24px;
    left: 24px;
    right: 24px;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    padding: 20px 24px;
    border-radius: 2px;
}

.badge-label {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--brown);
    margin-bottom: 4px;
}

.badge-value {
    font-family: var(--font-serif);
    font-size: 1.125rem;
    color: var(--black);
    font-weight: 500;
}

/* Section Headers */
.section-header {
    text-align: center;
    max-width: 800px;
    margin: 0 auto 64px;
    position: relative;
}

.section-header::after {
    content: '';
    position: absolute;
    left: 50%;
    bottom: -32px;
    width: 40px;
    height: 2px;
    background: linear-gradient(to right, transparent, var(--gold), transparent);
    transform: translateX(-50%);
}

.section-label {
    font-size: 0.8125rem;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--brown);
    font-weight: 500;
    display: block;
    margin-bottom: 16px;
}

.section-title {
    font-family: var(--font-serif);
    font-size: clamp(2rem, 4vw, 3rem);
    line-height: 1.2;
    font-weight: 500;
    color: var(--black);
    margin-bottom: 24px;
    letter-spacing: -0.01em;
}

.section-intro {
    font-size: clamp(1rem, 1.5vw, 1.125rem);
    line-height: 1.7;
    color: var(--dark-brown);
}

/* Career Timeline */
.timeline-section {
    background: linear-gradient(to bottom, var(--white) 0%, var(--beige) 50%, var(--white) 100%);
    position: relative;
}

.timeline {
    position: relative;
    padding: 60px 24px 60px 140px;
    max-width: 1200px;
    margin: 0 auto;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 60px;
    top: 0;
    bottom: 0;
    width: 4px;
    box-shadow: 0 0 20px rgba(184, 149, 106, 0.3);
    border-radius: 2px;
    background: linear-gradient(
        to bottom,
        transparent,
        var(--gold) 10%,
        var(--gold) 90%,
        transparent
    );
}

.timeline-item {
    position: relative;
    padding-left: 0;
    margin-bottom: 80px;
    opacity: 0;
    transform: translateX(-30px);
    transition: opacity 0.8s var(--ease), transform 0.8s var(--ease);
    width: 100%;
    max-width: 100%;
}

.timeline-item.visible {
    opacity: 1;
    transform: translateX(0);
}

.timeline-marker {
    position: absolute;
    left: -62px;
    top: 8px;
    width: 24px;
    height: 24px;
    border: 3px solid var(--gold);
    border-radius: 50%;
    background: var(--cream);
    z-index: 2;
    transition: all 0.15s ease-out;
    transform-origin: center center;
}

.timeline-marker::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 8px;
    height: 8px;
    background: var(--gold);
    border-radius: 50%;
    transition: all 0.4s var(--ease);
}

.timeline-item:hover .timeline-marker {
    transform: scale(1.3);
    box-shadow: 0 0 0 8px rgba(184, 149, 106, 0.1);
}

.timeline-item:hover .timeline-marker::before {
    transform: translate(-50%, -50%) scale(1.5);
}

.timeline-content {
    background: var(--white);
    padding: 32px 40px;
    border-radius: 2px;
    border-left: 3px solid var(--beige);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    transform-origin: left center;
    width: 100%;
    max-width: 100%;
}

.timeline-content::before {
    content: '';
    position: absolute;
    top: 20px;
    right: 20px;
    width: 100px;
    height: 100px;
    background: linear-gradient(
        135deg,
        transparent 40%,
        rgba(184, 149, 106, 0.03) 40%,
        rgba(184, 149, 106, 0.03) 60%,
        transparent 60%
    );
    pointer-events: none;
}

.timeline-item:hover .timeline-content {
    border-left-color: var(--gold);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.06);
}

.timeline-item.timeline-focused .timeline-content {
    border-left-color: var(--gold);
    border-left-width: 4px;
    box-shadow: 0 12px 48px rgba(0, 0, 0, 0.08);
}

.timeline-item.timeline-focused .timeline-marker {
    border-width: 4px;
    box-shadow: 0 0 0 12px rgba(184, 149, 106, 0.15);
}

.timeline-year {
    font-size: 0.8125rem;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    color: var(--gold);
    font-weight: 600;
    margin-bottom: 12px;
}

.timeline-title {
    font-family: var(--font-serif);
    font-size: 1.75rem;
    font-weight: 500;
    color: var(--black);
    margin-bottom: 8px;
    line-height: 1.3;
}

.timeline-company {
    font-size: 1.0625rem;
    color: var(--dark-brown);
    font-weight: 500;
    margin-bottom: 16px;
}

.timeline-description {
    font-size: 0.9375rem;
    line-height: 1.7;
    color: var(--dark-brown);
    margin-bottom: 20px;
}

.timeline-highlights {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 20px;
}

.highlight-tag {
    display: inline-block;
    padding: 6px 14px;
    background: var(--beige);
    color: var(--brown);
    font-size: 0.75rem;
    font-weight: 500;
    border-radius: 2px;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    transition: all 0.3s var(--ease);
}

.highlight-tag:hover {
    background: var(--gold);
    color: var(--white);
    transform: translateY(-2px);
}

.timeline-details {
    list-style: none;
    margin-top: 20px;
}

.timeline-details li {
    font-size: 0.9375rem;
    line-height: 1.7;
    color: var(--dark-brown);
    padding: 8px 0;
    padding-left: 20px;
    position: relative;
}

.timeline-details li::before {
    content: '→';
    position: absolute;
    left: 0;
    color: var(--gold);
}

/* Timeline Images */
.timeline-image {
    width: 100%;
    height: 240px;
    object-fit: cover;
    border-radius: 2px;
    margin-bottom: 24px;
    filter: grayscale(20%);
    transition: all 0.4s var(--ease);
}

.timeline-content:hover .timeline-image {
    filter: grayscale(0%);
    transform: scale(1.02);
}

/* Gallery Popup Images */
.gallery-popup {
    position: absolute;
    width: 280px;
    height: 200px;
    object-fit: cover;
    border-radius: 2px;
    border: 1px solid rgba(184, 149, 106, 0.25);
    opacity: 0;
    transform: scale(0.95);
    transition: all 0.5s var(--ease);
    pointer-events: none;
    box-shadow: 0 18px 52px rgba(0, 0, 0, 0.3);
    z-index: 10;
    filter: brightness(0.9);
}

.timeline-content:hover .gallery-popup {
    opacity: 1;
    transform: scale(1);
    filter: brightness(1);
}

/* Popup positioning */
.gallery-popup-1 {
    top: 20px;
    right: -310px;
    transition-delay: 0.05s;
}

.gallery-popup-2 {
    top: 240px;
    right: -310px;
    transition-delay: 0.15s;
}

/* Education Section */
.education-section {
    background: var(--white);
}

.education-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 32px;
    margin-bottom: 60px;
    width: 100%;
}

.education-card {
    padding: 40px 32px;
    background: var(--cream);
    border-radius: 2px;
    transition: all 0.4s var(--ease);
    position: relative;
    overflow: hidden;
    width: 100%;
    box-sizing: border-box;
    text-align: center;
}

.education-card::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: -2px;
    width: 0;
    height: 2px;
    background: var(--gold);
    transition: width 0.4s var(--ease);
}

.education-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.08);
}

.education-card:hover::after {
    width: 60px;
}

.education-icon {
    width: 48px;
    height: 48px;
    margin: 0 auto 24px;
}

.education-icon svg {
    width: 100%;
    height: 100%;
    stroke: var(--brown);
}

.education-title {
    font-family: var(--font-serif);
    font-size: 1.5rem;
    font-weight: 500;
    color: var(--black);
    margin-bottom: 12px;
}

.education-credential {
    font-size: 0.9375rem;
    line-height: 1.6;
    color: var(--dark-brown);
    margin-bottom: 8px;
}

.education-location {
    font-size: 0.875rem;
    color: var(--brown);
}

/* Skills Section */
.skills-section {
    text-align: center;
    margin-top: 40px;
}

.skills-title {
    font-family: var(--font-serif);
    font-size: 1.5rem;
    font-weight: 500;
    color: var(--black);
    margin-bottom: 32px;
}

.skills-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    justify-content: center;
}

.skill-tag {
    display: inline-block;
    padding: 10px 20px;
    background: var(--cream);
    border: 1px solid var(--beige);
    color: var(--dark-brown);
    font-size: 0.875rem;
    font-weight: 500;
    border-radius: 2px;
    transition: all 0.3s var(--ease);
}

.skill-tag:hover {
    background: var(--beige);
    border-color: var(--gold);
    color: var(--black);
    transform: translateY(-2px);
}

/* Contact Section */
.contact-section {
    background: var(--white);
}

.contact-content {
    text-align: center;
    max-width: 640px;
    margin: 0 auto;
}

.contact-title {
    font-family: var(--font-serif);
    font-size: clamp(2.25rem, 5vw, 3.5rem);
    line-height: 1.2;
    font-weight: 500;
    color: var(--black);
    margin-bottom: 24px;
    letter-spacing: -0.01em;
}

.contact-description {
    font-size: clamp(1rem, 1.5vw, 1.125rem);
    line-height: 1.7;
    color: var(--dark-brown);
    margin-bottom: 48px;
}

.contact-methods {
    display: flex;
    flex-direction: column;
    gap: 16px;
    margin-bottom: 40px;
}

.contact-link {
    display: flex;
    align-items: center;
    gap: 20px;
    padding: 24px 32px;
    background: var(--cream);
    border-radius: 2px;
    text-align: left;
    transition: all 0.3s var(--ease);
}

.contact-link svg {
    flex-shrink: 0;
}

.contact-link strong {
    display: block;
    font-family: var(--font-serif);
    font-size: 1.125rem;
    color: var(--black);
    margin-bottom: 4px;
}

.contact-link span {
    font-size: 0.9375rem;
    color: var(--dark-brown);
}

.contact-link:hover {
    background: var(--beige);
    transform: translateY(-2px);
}

.contact-note {
    padding-top: 32px;
    border-top: 1px solid var(--beige);
}

.contact-note p {
    font-size: 0.9375rem;
    color: var(--brown);
}

/* Footer */
.footer {
    background: var(--black);
    color: var(--white);
    padding: 60px 0 32px;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr auto;
    gap: 48px;
    padding-bottom: 40px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    margin-bottom: 24px;
}

.footer-logo {
    font-family: var(--font-serif);
    font-size: 1.25rem;
    font-weight: 500;
    margin-bottom: 8px;
}

.footer-tagline {
    font-size: 0.875rem;
    color: rgba(255, 255, 255, 0.6);
}

.footer-links {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.footer-links a {
    font-size: 0.9375rem;
    color: rgba(255, 255, 255, 0.8);
    transition: color 0.3s var(--ease);
}

.footer-links a:hover {
    color: var(--white);
}

.footer-social a {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 2px;
    transition: all 0.3s var(--ease);
}

.footer-social a:hover {
    background: rgba(255, 255, 255, 0.2);
}

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

.footer-bottom p {
    font-size: 0.875rem;
    color: rgba(255, 255, 255, 0.5);
}

/* Responsive */
@media (max-width: 1024px) {
    .hero-container {
        grid-template-columns: 1fr;
        gap: 48px;
    }
    
    .hero-image {
        max-width: 500px;
        margin: 0 auto;
        order: -1;
    }
    
    .hero-content {
        text-align: center;
    }
    
    .hero-description {
        margin-left: auto;
        margin-right: auto;
    }
    
    .hero-cta {
        justify-content: center;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: 32px;
        text-align: center;
    }
    
    .footer-links {
        align-items: center;
    }
}

@media (max-width: 768px) {
    /* Mobile Navigation */
    .nav {
        padding: 16px 24px;
        box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
    }
    
    .nav.scrolled {
        padding: 12px 24px;
        box-shadow: 0 2px 12px rgba(0, 0, 0, 0.08);
    }
    
    .nav-menu {
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background: rgba(245, 241, 232, 0.98);
        backdrop-filter: blur(20px);
        -webkit-backdrop-filter: blur(20px);
        flex-direction: column;
        justify-content: center;
        align-items: center;
        gap: 32px;
        transform: translateX(100%);
        transition: transform 0.3s var(--ease);
        z-index: 999;
        overflow-y: auto;
        -webkit-overflow-scrolling: touch;
    }
    
    .nav-menu.active {
        transform: translateX(0);
    }
    
    .nav-link {
        font-size: 1.5rem;
        font-family: var(--font-serif);
        padding: 12px 24px;
    }
    
    .nav-toggle {
        display: flex;
        z-index: 1000;
    }
    
    .nav-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(6px, 6px);
    }
    
    .nav-toggle.active span:nth-child(2) {
        opacity: 0;
    }
    
    .nav-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(6px, -6px);
    }
    
    /* Hero Section Mobile */
    .hero {
        padding: 100px 0 60px;
        min-height: auto;
    }
    
    .hero-container {
        padding: 0 24px;
    }
    
    .hero-title {
        font-size: clamp(2rem, 10vw, 3rem);
    }
    
    .hero-image {
        max-width: 100%;
    }
    
    .hero-badge {
        bottom: 16px;
        left: 16px;
        right: 16px;
        padding: 16px 20px;
    }
    
    /* Sections Mobile */
    .section {
        padding: 60px 0;
    }
    
    .container,
    .container-narrow {
        padding: 0 24px;
    }
    
    .section-header {
        margin-bottom: 48px;
    }
    
    .section-title {
        font-size: clamp(1.75rem, 8vw, 2.5rem);
    }
    
    /* Timeline Mobile */
    .timeline {
        padding: 40px 0 40px 0;
        padding-left: max(20px, env(safe-area-inset-left));
        padding-right: max(20px, env(safe-area-inset-right));
    }
    
    .timeline::before {
        left: max(20px, env(safe-area-inset-left));
        width: 3px;
    }
    
    .timeline-marker {
        left: -36px;
        width: 18px;
        height: 18px;
        border-width: 3px;
    }
    
    .timeline-marker::before {
        width: 6px;
        height: 6px;
    }
    
    .timeline-item {
        padding-left: 48px;
        margin-bottom: 48px;
        width: 100%;
    }
    
    .timeline-content {
        padding: 20px;
        border-left-width: 2px;
        width: 100%;
        max-width: 100%;
        box-sizing: border-box;
    }
    
    .timeline-content::before {
        display: none;
    }
    
    .timeline-title {
        font-size: 1.375rem;
        line-height: 1.25;
    }
    
    .timeline-year {
        font-size: 0.75rem;
    }
    
    .timeline-company {
        font-size: 0.9375rem;
    }
    
    .timeline-description {
        font-size: 0.875rem;
        line-height: 1.6;
    }
    
    /* Education Grid Mobile */
    .education-grid {
        grid-template-columns: 1fr;
        gap: 24px;
        width: 100%;
    }
    
    .education-card {
        padding: 28px 24px;
        width: 100%;
        max-width: 100%;
    }
    
    /* Contact Mobile */
    .contact-title {
        font-size: clamp(1.75rem, 8vw, 2.5rem);
    }
    
    .contact-link {
        padding: 20px 24px;
        flex-direction: column;
        text-align: center;
        gap: 12px;
    }
    
    /* Footer Mobile */
    .footer {
        padding: 48px 0 24px;
    }
    
    .footer-content {
        gap: 24px;
    }
    
    .footer-social {
        display: flex;
        justify-content: center;
    }
}

/* Small Mobile */
@media (max-width: 480px) {
    .hero-cta {
        flex-direction: column;
        width: 100%;
    }
    
    .btn-primary,
    .btn-secondary {
        width: 100%;
        justify-content: center;
        font-size: 1rem;
    }
    
    .timeline-highlights {
        gap: 8px;
    }
    
    .highlight-tag {
        font-size: 0.75rem;
        padding: 6px 12px;
    }
    
    .section-header::after {
        width: 30px;
    }
    
    .hero-title {
        font-size: 2rem;
        line-height: 1.2;
    }
    
    .section-title {
        font-size: 1.75rem;
    }
    
    .timeline-title {
        font-size: 1.375rem;
    }
    
    .nav-logo {
        font-size: 1rem;
    }
    
    .container,
    .container-narrow {
        padding: 0 20px;
    }
    
    .hero-container {
        padding: 0 20px;
    }
}