/* ===================================
   CSS Variables & Theme Setup
   =================================== */
:root {
    /* Light Theme (Default) */
    --color-white: #FFFFFF;
    --color-black: #1A1A1A;
    --color-yellow: #FFD700;
    --color-yellow-dark: #E6C200;
    --color-gray-light: #F5F5F5;
    --color-gray: #E0E0E0;
    --color-gray-dark: #757575;
    --color-text: #1A1A1A;
    --color-text-secondary: #555555;
    --color-background: #FFFFFF;
    --color-background-alt: #F9F9F9;
    --color-border: #E0E0E0;
    --color-shadow: rgba(0, 0, 0, 0.1);
    
    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    --font-size-base: 16px;
    --font-size-sm: 14px;
    --font-size-lg: 18px;
    --font-size-xl: 24px;
    --font-size-2xl: 32px;
    --font-size-3xl: 48px;
    --font-size-4xl: 64px;
    --line-height: 1.6;
    --line-height-tight: 1.2;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;
    --spacing-3xl: 6rem;
    
    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 16px;
    --radius-full: 9999px;
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-base: 0.3s ease;
    --transition-slow: 0.5s ease;
    
    /* Container */
    --container-max-width: 1200px;
    --header-height: 70px;
}

/* Dark Theme */
[data-theme="dark"] {
    --color-text: #FFFFFF;
    --color-text-secondary: #B0B0B0;
    --color-background: #1A1A1A;
    --color-background-alt: #252525;
    --color-border: #333333;
    --color-shadow: rgba(0, 0, 0, 0.3);
    --color-gray-light: #2A2A2A;
    --color-gray: #333333;
    --color-gray-dark: #B0B0B0;
}

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

html {
    scroll-behavior: smooth;
    font-size: var(--font-size-base);
}

body {
    font-family: var(--font-family);
    line-height: var(--line-height);
    color: var(--color-text);
    background-color: var(--color-background);
    transition: background-color var(--transition-base), color var(--transition-base);
}

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

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

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
}

ul {
    list-style: none;
}

/* ===================================
   Container & Layout
   =================================== */
.container {
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

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

.section__title {
    font-size: var(--font-size-3xl);
    font-weight: 700;
    text-align: center;
    margin-bottom: var(--spacing-2xl);
    color: var(--color-text);
}

/* ===================================
   Header & Navigation
   =================================== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background-color: var(--color-background);
    border-bottom: 1px solid var(--color-border);
    z-index: 1000;
    transition: background-color var(--transition-base), border-color var(--transition-base);
}

.nav {
    height: var(--header-height);
}

.nav__container {
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 var(--spacing-md);
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
}

.nav__logo {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--color-yellow);
}

.nav__toggle {
    display: none;
    padding: var(--spacing-xs);
    color: var(--color-text);
}

.nav__menu {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.nav__link {
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--color-text);
    transition: color var(--transition-fast);
    position: relative;
}

.nav__link:hover,
.nav__link:focus {
    color: var(--color-yellow);
}

.nav__link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--color-yellow);
    transition: width var(--transition-fast);
}

.nav__link:hover::after,
.nav__link:focus::after {
    width: 100%;
}

/* Theme Toggle */
.theme-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: var(--radius-full);
    background-color: var(--color-gray-light);
    transition: background-color var(--transition-fast);
}

.theme-toggle:hover {
    background-color: var(--color-gray);
}

.theme-toggle__icon {
    width: 20px;
    height: 20px;
    color: var(--color-text);
}

.theme-toggle__icon--moon {
    display: none;
}

[data-theme="dark"] .theme-toggle__icon--sun {
    display: none;
}

[data-theme="dark"] .theme-toggle__icon--moon {
    display: block;
}

/* ===================================
   Buttons
   =================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm) var(--spacing-lg);
    font-size: var(--font-size-sm);
    font-weight: 600;
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

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

.btn--primary:hover,
.btn--primary:focus {
    background-color: var(--color-yellow-dark);
    transform: translateY(-2px);
}

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

.btn--secondary:hover,
.btn--secondary:focus {
    background-color: var(--color-text);
    color: var(--color-background);
}

.btn--full {
    width: 100%;
}

/* ===================================
   Hero Section
   =================================== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: var(--header-height);
    background: linear-gradient(135deg, var(--color-background) 0%, var(--color-background-alt) 100%);
}

.hero__container {
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 var(--spacing-md);
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-2xl);
    align-items: center;
}

.hero__content {
    animation: fadeInUp 0.8s ease;
}

.hero__greeting {
    display: block;
    font-size: var(--font-size-lg);
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-xs);
}

.hero__name {
    display: block;
    font-size: var(--font-size-4xl);
    font-weight: 800;
    color: var(--color-text);
    margin-bottom: var(--spacing-xs);
}

.hero__role {
    display: block;
    font-size: var(--font-size-2xl);
    color: var(--color-yellow);
    margin-bottom: var(--spacing-md);
}

.hero__description {
    font-size: var(--font-size-lg);
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-lg);
    max-width: 500px;
}

.hero__cta {
    display: flex;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
}

.hero__social {
    display: flex;
    gap: var(--spacing-sm);
}

.hero__social a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    border-radius: var(--radius-full);
    background-color: var(--color-gray-light);
    color: var(--color-text);
    transition: all var(--transition-fast);
}

.hero__social a:hover,
.hero__social a:focus {
    background-color: var(--color-yellow);
    color: var(--color-black);
    transform: translateY(-2px);
}

.hero__image {
    display: flex;
    justify-content: center;
    animation: fadeIn 1s ease 0.3s both;
}

.hero__avatar {
    width: 400px;
    height: 400px;
    border-radius: var(--radius-full);
    overflow: hidden;
    border: 4px solid var(--color-yellow);
    box-shadow: 0 20px 40px var(--color-shadow);
}

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

/* ===================================
   About Section
   =================================== */
.about {
    background-color: var(--color-background-alt);
}

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

.about__description {
    font-size: var(--font-size-lg);
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-md);
}

.about__stats {
    display: flex;
    gap: var(--spacing-lg);
    margin-top: var(--spacing-lg);
}

.stat {
    text-align: center;
}

.stat__number {
    display: block;
    font-size: var(--font-size-3xl);
    font-weight: 700;
    color: var(--color-yellow);
}

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

.about__image {
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: 0 10px 30px var(--color-shadow);
}

/* ===================================
   Skills Section
   =================================== */
.skills__grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
}

.skill-category {
    background-color: var(--color-background-alt);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.skill-category:hover {
    transform: translateY(-4px);
    box-shadow: 0 10px 30px var(--color-shadow);
}

.skill-category__title {
    font-size: var(--font-size-xl);
    font-weight: 600;
    margin-bottom: var(--spacing-md);
    color: var(--color-text);
}

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

.skill-tag {
    padding: var(--spacing-xs) var(--spacing-sm);
    background-color: var(--color-yellow);
    color: var(--color-black);
    border-radius: var(--radius-full);
    font-size: var(--font-size-sm);
    font-weight: 500;
}

/* ===================================
   Experience Section
   =================================== */
.experience {
    background-color: var(--color-background-alt);
}

.timeline {
    max-width: 800px;
    margin: 0 auto;
    position: relative;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    width: 2px;
    height: 100%;
    background-color: var(--color-yellow);
}

.timeline__item {
    display: flex;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-2xl);
    position: relative;
}

.timeline__item:nth-child(odd) {
    flex-direction: row-reverse;
}

.timeline__item:nth-child(odd) .timeline__content {
    text-align: right;
}

.timeline__date {
    flex-shrink: 0;
    width: 120px;
    padding: var(--spacing-sm);
    background-color: var(--color-yellow);
    color: var(--color-black);
    border-radius: var(--radius-md);
    font-weight: 600;
    text-align: center;
    position: relative;
    z-index: 1;
}

.timeline__content {
    flex: 1;
    padding: var(--spacing-md);
    background-color: var(--color-background);
    border-radius: var(--radius-lg);
    box-shadow: 0 4px 12px var(--color-shadow);
}

.timeline__title {
    font-size: var(--font-size-xl);
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
    color: var(--color-text);
}

.timeline__company {
    font-size: var(--font-size-sm);
    color: var(--color-yellow);
    margin-bottom: var(--spacing-sm);
    font-weight: 500;
}

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

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

.project-card {
    background-color: var(--color-background-alt);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: transform var(--transition-fast), box-shadow var(--transition-fast);
    cursor: pointer;
}

.project-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 40px var(--color-shadow);
}

.project-card__image {
    height: 200px;
    overflow: hidden;
}

.project-card__image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.project-card:hover .project-card__image img {
    transform: scale(1.05);
}

.project-card__content {
    padding: var(--spacing-lg);
}

.project-card__title {
    font-size: var(--font-size-xl);
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    color: var(--color-text);
}

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

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

.project-card__tag {
    padding: 4px 12px;
    background-color: var(--color-gray-light);
    color: var(--color-text);
    border-radius: var(--radius-full);
    font-size: var(--font-size-sm);
}

.project-card__btn {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    color: var(--color-yellow);
    font-weight: 600;
    transition: gap var(--transition-fast);
}

.project-card__btn:hover {
    gap: var(--spacing-sm);
}

/* ===================================
   Testimonials Section
   =================================== */
.testimonials {
    background-color: var(--color-background-alt);
}

.testimonials__grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
}

.testimonial {
    background-color: var(--color-background);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    box-shadow: 0 4px 12px var(--color-shadow);
}

.testimonial__content {
    position: relative;
    margin-bottom: var(--spacing-md);
}

.testimonial__icon {
    width: 32px;
    height: 32px;
    color: var(--color-yellow);
    margin-bottom: var(--spacing-sm);
}

.testimonial__text {
    font-style: italic;
    color: var(--color-text-secondary);
    line-height: 1.8;
}

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

.testimonial__avatar {
    width: 50px;
    height: 50px;
    border-radius: var(--radius-full);
    object-fit: cover;
}

.testimonial__info {
    display: flex;
    flex-direction: column;
}

.testimonial__name {
    font-weight: 600;
    color: var(--color-text);
    font-style: normal;
}

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

/* ===================================
   Blog Section
   =================================== */
.blog__grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
}

.blog-card {
    background-color: var(--color-background-alt);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.blog-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 40px var(--color-shadow);
}

.blog-card__image {
    height: 200px;
    overflow: hidden;
}

.blog-card__image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.blog-card:hover .blog-card__image img {
    transform: scale(1.05);
}

.blog-card__content {
    padding: var(--spacing-lg);
}

.blog-card__date {
    font-size: var(--font-size-sm);
    color: var(--color-yellow);
    margin-bottom: var(--spacing-xs);
    display: block;
}

.blog-card__title {
    font-size: var(--font-size-xl);
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    color: var(--color-text);
}

.blog-card__excerpt {
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-md);
}

.blog-card__link {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    color: var(--color-yellow);
    font-weight: 600;
    transition: gap var(--transition-fast);
}

.blog-card__link:hover {
    gap: var(--spacing-sm);
}

/* ===================================
   Contact Section
   =================================== */
.contact {
    background-color: var(--color-background-alt);
}

.contact__content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-2xl);
}

.contact__subtitle {
    font-size: var(--font-size-2xl);
    font-weight: 600;
    margin-bottom: var(--spacing-md);
    color: var(--color-text);
}

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

.contact__details {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.contact-detail {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--color-text-secondary);
}

.contact-detail i {
    color: var(--color-yellow);
}

.contact-detail a {
    color: var(--color-text);
    transition: color var(--transition-fast);
}

.contact-detail a:hover {
    color: var(--color-yellow);
}

.contact__social {
    display: flex;
    gap: var(--spacing-sm);
}

.contact__social a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    border-radius: var(--radius-full);
    background-color: var(--color-gray-light);
    color: var(--color-text);
    transition: all var(--transition-fast);
}

.contact__social a:hover,
.contact__social a:focus {
    background-color: var(--color-yellow);
    color: var(--color-black);
    transform: translateY(-2px);
}

/* Form */
.contact-form {
    background-color: var(--color-background);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    box-shadow: 0 4px 12px var(--color-shadow);
}

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

.form-label {
    display: block;
    margin-bottom: var(--spacing-xs);
    font-weight: 500;
    color: var(--color-text);
}

.form-input {
    width: 100%;
    padding: var(--spacing-sm);
    border: 2px solid var(--color-border);
    border-radius: var(--radius-md);
    font-family: inherit;
    font-size: var(--font-size-base);
    color: var(--color-text);
    background-color: var(--color-background);
    transition: border-color var(--transition-fast);
}

.form-input:focus {
    outline: none;
    border-color: var(--color-yellow);
}

.form-input--textarea {
    resize: vertical;
    min-height: 120px;
}

.form-input:invalid:not(:placeholder-shown) {
    border-color: #ff4444;
}

.form-error {
    display: block;
    margin-top: var(--spacing-xs);
    font-size: var(--font-size-sm);
    color: #ff4444;
}

.form-success {
    display: none;
    margin-top: var(--spacing-md);
    padding: var(--spacing-sm);
    background-color: #4CAF50;
    color: white;
    border-radius: var(--radius-md);
    align-items: center;
    gap: var(--spacing-xs);
}

.form-success.show {
    display: flex;
}

/* ===================================
   Footer
   =================================== */
.footer {
    background-color: var(--color-black);
    color: var(--color-white);
    padding: var(--spacing-2xl) 0 var(--spacing-lg);
}

.footer__content {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: var(--spacing-2xl);
    margin-bottom: var(--spacing-lg);
}

.footer__logo {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--color-yellow);
}

.footer__tagline {
    color: var(--color-gray-dark);
    margin-top: var(--spacing-xs);
}

.footer__links {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-lg);
}

.footer__title {
    font-size: var(--font-size-base);
    font-weight: 600;
    margin-bottom: var(--spacing-md);
    color: var(--color-white);
}

.footer__list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.footer__list a {
    color: var(--color-gray-dark);
    transition: color var(--transition-fast);
}

.footer__list a:hover {
    color: var(--color-yellow);
}

.footer__bottom {
    text-align: center;
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--color-gray);
    color: var(--color-gray-dark);
}

/* ===================================
   Modal
   =================================== */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 2000;
}

.modal.show {
    display: flex;
}

.modal__overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0, 0, 0, 0.7);
    animation: fadeIn 0.3s ease;
}

.modal__content {
    position: relative;
    width: 90%;
    max-width: 600px;
    max-height: 90vh;
    margin: auto;
    background-color: var(--color-background);
    border-radius: var(--radius-lg);
    overflow-y: auto;
    animation: slideUp 0.3s ease;
}

.modal__close {
    position: absolute;
    top: var(--spacing-sm);
    right: var(--spacing-sm);
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-full);
    background-color: var(--color-gray-light);
    color: var(--color-text);
    transition: all var(--transition-fast);
}

.modal__close:hover {
    background-color: var(--color-yellow);
    color: var(--color-black);
}

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

/* ===================================
   Scroll Animations
   =================================== */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal.active {
    opacity: 1;
    transform: translateY(0);
}

/* ===================================
   Animations
   =================================== */
@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(50px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ===================================
   Responsive Design
   =================================== */
@media (max-width: 968px) {
    :root {
        --font-size-4xl: 48px;
        --font-size-3xl: 36px;
    }
    
    .hero__container {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .hero__cta {
        justify-content: center;
    }
    
    .hero__social {
        justify-content: center;
    }
    
    .hero__avatar {
        width: 300px;
        height: 300px;
    }
    
    .about__content {
        grid-template-columns: 1fr;
    }
    
    .about__image {
        order: -1;
    }
    
    .contact__content {
        grid-template-columns: 1fr;
    }
    
    .footer__content {
        grid-template-columns: 1fr;
    }
    
    .timeline::before {
        left: 20px;
    }
    
    .timeline__item {
        flex-direction: column !important;
        padding-left: 50px;
    }
    
    .timeline__item:nth-child(odd) .timeline__content {
        text-align: left;
    }
    
    .timeline__date {
        width: auto;
        align-self: flex-start;
    }
}

@media (max-width: 768px) {
    .nav__toggle {
        display: flex;
    }
    
    .nav__menu {
        position: fixed;
        top: var(--header-height);
        left: 0;
        right: 0;
        flex-direction: column;
        background-color: var(--color-background);
        padding: var(--spacing-lg);
        gap: var(--spacing-md);
        border-bottom: 1px solid var(--color-border);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: all var(--transition-base);
    }
    
    .nav__menu.show {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }
    
    .section {
        padding: var(--spacing-2xl) 0;
    }
    
    .section__title {
        font-size: var(--font-size-2xl);
    }
    
    .hero__name {
        font-size: var(--font-size-3xl);
    }
    
    .hero__role {
        font-size: var(--font-size-xl);
    }
    
    .hero__avatar {
        width: 250px;
        height: 250px;
    }
    
    .about__stats {
        flex-direction: column;
        gap: var(--spacing-md);
    }
    
    .skills__grid {
        grid-template-columns: 1fr;
    }
    
    .projects__grid {
        grid-template-columns: 1fr;
    }
    
    .testimonials__grid {
        grid-template-columns: 1fr;
    }
    
    .blog__grid {
        grid-template-columns: 1fr;
    }
    
    .footer__links {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    :root {
        --font-size-4xl: 36px;
        --font-size-3xl: 28px;
        --font-size-2xl: 24px;
    }
    
    .hero__cta {
        flex-direction: column;
    }
    
    .btn {
        width: 100%;
    }
    
    .contact-form {
        padding: var(--spacing-md);
    }
}

/* ===================================
   Accessibility
   =================================== */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    
    html {
        scroll-behavior: auto;
    }
}

/* Focus styles for keyboard navigation */
*:focus-visible {
    outline: 2px solid var(--color-yellow);
    outline-offset: 2px;
}

/* Skip to content link */
.skip-link {
    position: absolute;
    top: -100%;
    left: 0;
    background-color: var(--color-yellow);
    color: var(--color-black);
    padding: var(--spacing-sm) var(--spacing-md);
    z-index: 9999;
    transition: top var(--transition-fast);
}

.skip-link:focus {
    top: 0;
}