/* ===== CSS RESET ===== */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
}

body {
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

img,
picture,
video,
canvas,
svg {
    display: block;
    max-width: 100%;
}

input,
button,
textarea,
select {
    font: inherit;
}

/* ===== CSS VARIABLES ===== */
:root {
    /* Colors */
    --color-primary: #2563EB;
    --color-primary-dark: #1D4ED8;
    --color-primary-light: #3B82F6;
    --color-secondary: #F97316;
    --color-secondary-dark: #EA580C;
    --color-secondary-light: #FB923C;

    --color-text: #1F2937;
    --color-text-light: #6B7280;
    --color-text-lighter: #9CA3AF;

    --color-background: #FFFFFF;
    --color-surface: #F9FAFB;
    --color-surface-dark: #F3F4F6;

    --color-border: #E5E7EB;
    --color-border-light: #F3F4F6;

    --color-success: #10B981;
    --color-error: #EF4444;
    --color-warning: #F59E0B;

    /* Typography */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;

    --font-size-xs: 0.75rem;
    /* 12px */
    --font-size-sm: 0.875rem;
    /* 14px */
    --font-size-base: 1rem;
    /* 16px */
    --font-size-lg: 1.125rem;
    /* 18px */
    --font-size-xl: 1.25rem;
    /* 20px */
    --font-size-2xl: 1.5rem;
    /* 24px */
    --font-size-3xl: 1.875rem;
    /* 30px */
    --font-size-4xl: 2.25rem;
    /* 36px */
    --font-size-5xl: 3rem;
    /* 48px */
    --font-size-6xl: 3.75rem;
    /* 60px */

    --font-weight-light: 300;
    --font-weight-normal: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;

    --line-height-tight: 1.25;
    --line-height-snug: 1.375;
    --line-height-normal: 1.5;
    --line-height-relaxed: 1.625;
    --line-height-loose: 2;

    /* Spacing */
    --spacing-xs: 0.25rem;
    /* 4px */
    --spacing-sm: 0.5rem;
    /* 8px */
    --spacing-md: 0.75rem;
    /* 12px */
    --spacing-lg: 1rem;
    /* 16px */
    --spacing-xl: 1.25rem;
    /* 20px */
    --spacing-2xl: 1.5rem;
    /* 24px */
    --spacing-3xl: 2rem;
    /* 32px */
    --spacing-4xl: 2.5rem;
    /* 40px */
    --spacing-5xl: 3rem;
    /* 48px */
    --spacing-6xl: 4rem;
    /* 64px */
    --spacing-7xl: 5rem;
    /* 80px */
    --spacing-8xl: 6rem;
    /* 96px */

    /* Layout */
    --container-max-width: 1200px;
    --container-padding: var(--spacing-lg);

    /* Border radius */
    --radius-sm: 0.25rem;
    /* 4px */
    --radius-md: 0.375rem;
    /* 6px */
    --radius-lg: 0.5rem;
    /* 8px */
    --radius-xl: 0.75rem;
    /* 12px */
    --radius-2xl: 1rem;
    /* 16px */
    --radius-full: 9999px;

    /* 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: 0.15s ease-in-out;
    --transition-normal: 0.3s ease-in-out;
    --transition-slow: 0.5s ease-in-out;

    /* Z-index */
    --z-dropdown: 1000;
    --z-sticky: 1020;
    --z-fixed: 1030;
    --z-modal: 1040;
    --z-popover: 1050;
    --z-tooltip: 1060;
}

/* ===== BASE STYLES ===== */
body {
    font-family: var(--font-primary);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-normal);
    line-height: var(--line-height-normal);
    color: var(--color-text);
    background-color: var(--color-background);
}

/* Typography */
h1,
h2,
h3,
h4,
h5,
h6 {
    font-weight: var(--font-weight-semibold);
    line-height: var(--line-height-tight);
    margin-bottom: var(--spacing-2xl);
    color: var(--color-text);
}

h1 {
    font-size: var(--font-size-5xl);
}

h2 {
    font-size: var(--font-size-4xl);
}

h3 {
    font-size: var(--font-size-3xl);
}

h4 {
    font-size: var(--font-size-2xl);
}

h5 {
    font-size: var(--font-size-xl);
}

h6 {
    font-size: var(--font-size-lg);
}

p {
    margin-bottom: var(--spacing-2xl);
    color: var(--color-text);
}

.text-large {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-medium);
    color: var(--color-text);
}

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

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

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

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

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

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

/* Lists */
ul,
ol {
    margin-bottom: var(--spacing-2xl);
    padding-left: var(--spacing-3xl);
}

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

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

.values-list li {
    position: relative;
    padding-left: var(--spacing-2xl);
    margin-bottom: var(--spacing-lg);
}

.values-list li::before {
    content: '✓';
    position: absolute;
    left: 0;
    top: 0;
    color: var(--color-primary);
    font-weight: var(--font-weight-bold);
}

/* ===== LAYOUT COMPONENTS ===== */
.container {
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 var(--container-padding);
}

.section-header {
    text-align: center;
    margin-bottom: var(--spacing-6xl);
}

.section-title {
    font-size: var(--font-size-4xl);
    font-weight: var(--font-weight-bold);
    margin-bottom: var(--spacing-lg);
    color: var(--color-text);
}

.section-subtitle {
    font-size: var(--font-size-lg);
    color: var(--color-text-light);
    max-width: 600px;
    margin: 0 auto;
}

/* ===== BUTTON COMPONENTS ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-2xl);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-medium);
    line-height: 1;
    text-align: center;
    text-decoration: none;
    border: 2px solid transparent;
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.btn:focus {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

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

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

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

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

.btn-sm {
    padding: var(--spacing-sm) var(--spacing-lg);
    font-size: var(--font-size-sm);
}

.btn-full {
    width: 100%;
}

.btn-icon {
    flex-shrink: 0;
}

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none !important;
    box-shadow: none !important;
}

/* ===== NAVIGATION ===== */
.main-nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background-color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--color-border-light);
    z-index: var(--z-fixed);
    transition: var(--transition-normal);
}

.nav-container {
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 var(--container-padding);
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 70px;
}

.nav-logo {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-text);
    text-decoration: none;
}

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

.nav-menu {
    display: flex;
    align-items: center;
    gap: var(--spacing-4xl);
}

.nav-link {
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-medium);
    color: var(--color-text);
    text-decoration: none;
    position: relative;
    transition: var(--transition-fast);
}

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

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--color-primary);
    transition: var(--transition-fast);
}

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

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 4px;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--spacing-sm);
}

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

/* ===== HERO SECTION ===== */
.hero {
    padding: calc(70px + var(--spacing-6xl)) 0 var(--spacing-8xl);
    background: linear-gradient(135deg, var(--color-surface) 0%, var(--color-background) 100%);
}

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

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-6xl);
    align-items: center;
}

.hero-title {
    font-size: var(--font-size-6xl);
    font-weight: var(--font-weight-bold);
    line-height: var(--line-height-tight);
    margin-bottom: var(--spacing-2xl);
}

.hero-subtitle {
    font-size: var(--font-size-xl);
    color: var(--color-text-light);
    margin-bottom: var(--spacing-4xl);
    line-height: var(--line-height-relaxed);
}

.hero-cta {
    display: flex;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-4xl);
}

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

.social-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    background-color: var(--color-surface);
    border-radius: var(--radius-lg);
    color: var(--color-text-light);
    transition: var(--transition-normal);
}

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

.hero-image-container {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
}

.profile-image {
    width: 300px;
    height: 300px;
    border-radius: 50%;
    object-fit: cover;
    border: 4px solid white;
    box-shadow: var(--shadow-xl);
    position: relative;
    z-index: 2;
}

.image-decoration {
    position: absolute;
    top: -20px;
    right: -20px;
    width: 340px;
    height: 340px;
    border: 2px solid var(--color-primary);
    border-radius: 50%;
    z-index: 1;
}

/* ===== ABOUT SECTION ===== */
.about {
    padding: var(--spacing-8xl) 0;
    background-color: var(--color-background);
}

.about-content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: var(--spacing-6xl);
    align-items: start;
}

.about-intro {
    margin-bottom: var(--spacing-4xl);
}

.about-details p {
    margin-bottom: var(--spacing-2xl);
}

.about-values {
    margin-top: var(--spacing-4xl);
}

.about-values h3 {
    font-size: var(--font-size-xl);
    margin-bottom: var(--spacing-2xl);
    color: var(--color-text);
}

.about-photo {
    width: 100%;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
}

/* ===== SKILLS SECTION ===== */
.skills {
    padding: var(--spacing-8xl) 0;
    background-color: var(--color-surface);
}

.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--spacing-4xl);
}

.skill-category {
    background-color: var(--color-background);
    padding: var(--spacing-4xl);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
    transition: var(--transition-normal);
}

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

.category-title {
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-semibold);
    margin-bottom: var(--spacing-3xl);
    color: var(--color-primary);
    text-align: center;
}

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

.skill-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
    padding: var(--spacing-lg);
    background-color: var(--color-surface);
    border-radius: var(--radius-lg);
    transition: var(--transition-fast);
}

.skill-item:hover {
    background-color: var(--color-surface-dark);
    transform: translateX(4px);
}

.skill-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    background-color: var(--color-primary);
    color: white;
    border-radius: var(--radius-lg);
    flex-shrink: 0;
}

.skill-info h4 {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    margin-bottom: var(--spacing-xs);
    color: var(--color-text);
}

.skill-info p {
    font-size: var(--font-size-sm);
    color: var(--color-text-light);
    margin: 0;
}

/* ===== PROJECTS SECTION ===== */
.projects {
    padding: var(--spacing-8xl) 0;
    background-color: var(--color-background);
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--spacing-4xl);
}

.project-card {
    background-color: var(--color-background);
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: var(--transition-normal);
    position: relative;
}

.project-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
}

.project-image {
    position: relative;
    overflow: hidden;
    aspect-ratio: 16/10;
}

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

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

.project-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(37, 99, 235, 0.9);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: var(--transition-normal);
}

.project-card:hover .project-overlay {
    opacity: 1;
}

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

.project-content {
    padding: var(--spacing-3xl);
}

.project-title {
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-semibold);
    margin-bottom: var(--spacing-lg);
    color: var(--color-text);
}

.project-description {
    color: var(--color-text-light);
    margin-bottom: var(--spacing-2xl);
    line-height: var(--line-height-relaxed);
}

.project-tech {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

.tech-tag {
    padding: var(--spacing-xs) var(--spacing-md);
    background-color: var(--color-surface);
    color: var(--color-primary);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    border-radius: var(--radius-full);
    border: 1px solid var(--color-border);
}

/* ===== OTHER PROJECTS SECTION ===== */
.other-projects {
    padding: var(--spacing-8xl) 0;
    background-color: var(--color-surface);
}

.other-projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-3xl);
}

.other-project-card {
    background-color: var(--color-background);
    padding: var(--spacing-3xl);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
    transition: var(--transition-normal);
    text-align: center;
}

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

.project-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 64px;
    height: 64px;
    background-color: var(--color-primary);
    color: white;
    border-radius: var(--radius-xl);
    margin: 0 auto var(--spacing-2xl);
}

.other-project-card .project-title {
    font-size: var(--font-size-xl);
    margin-bottom: var(--spacing-lg);
}

.other-project-card .project-description {
    margin-bottom: var(--spacing-2xl);
    text-align: left;
}

.other-project-card .project-tech {
    justify-content: center;
    margin-bottom: var(--spacing-2xl);
}

.project-link {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--color-primary);
    font-weight: var(--font-weight-medium);
    text-decoration: none;
    transition: var(--transition-fast);
}

.project-link:hover {
    color: var(--color-primary-dark);
    transform: translateX(4px);
}

/* ===== CONTACT SECTION ===== */
.contact {
    padding: var(--spacing-8xl) 0;
    background-color: var(--color-background);
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-6xl);
    align-items: start;
}

.contact-intro {
    margin-bottom: var(--spacing-4xl);
}

.contact-intro h3 {
    font-size: var(--font-size-2xl);
    margin-bottom: var(--spacing-lg);
    color: var(--color-text);
}

.contact-intro p {
    color: var(--color-text-light);
    line-height: var(--line-height-relaxed);
}

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

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-lg);
}

.contact-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    background-color: var(--color-surface);
    color: var(--color-primary);
    border-radius: var(--radius-lg);
    flex-shrink: 0;
}

.contact-text h4 {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    margin-bottom: var(--spacing-xs);
    color: var(--color-text);
}

.contact-text p,
.contact-text a {
    font-size: var(--font-size-base);
    color: var(--color-text-light);
    margin: 0;
}

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

/* ===== FORM COMPONENTS ===== */
.contact-form {
    background-color: var(--color-surface);
    padding: var(--spacing-4xl);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
}

.form-group {
    margin-bottom: var(--spacing-2xl);
}

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

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

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.form-input.error,
.form-select.error,
.form-textarea.error {
    border-color: var(--color-error);
}

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

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

.success-message,
.error-message {
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    margin-bottom: var(--spacing-2xl);
    text-align: center;
}

.success-message {
    background-color: rgba(16, 185, 129, 0.1);
    color: var(--color-success);
    border: 1px solid rgba(16, 185, 129, 0.2);
}

.error-message {
    background-color: rgba(239, 68, 68, 0.1);
    color: var(--color-error);
    border: 1px solid rgba(239, 68, 68, 0.2);
}

/* ===== FOOTER ===== */
.main-footer {
    padding: var(--spacing-4xl) 0;
    background-color: var(--color-surface);
    border-top: 1px solid var(--color-border);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.footer-info p {
    font-size: var(--font-size-sm);
    color: var(--color-text-light);
    margin: 0;
}

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

.footer-social .social-link {
    width: 40px;
    height: 40px;
}

/* ===== BACK TO TOP BUTTON ===== */
.back-to-top {
    position: fixed;
    bottom: var(--spacing-3xl);
    right: var(--spacing-3xl);
    width: 50px;
    height: 50px;
    background-color: var(--color-primary);
    color: white;
    border: none;
    border-radius: 50%;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition-normal);
    z-index: var(--z-fixed);
    display: flex;
    align-items: center;
    justify-content: center;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    background-color: var(--color-primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

/* ===== ANIMATIONS ===== */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInLeft {
    from {
        opacity: 0;
        transform: translateX(-30px);
    }

    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes fadeInRight {
    from {
        opacity: 0;
        transform: translateX(30px);
    }

    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.scroll-hidden {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.fade-in-up {
  opacity: 1;
  transform: translateY(0);
}


.fade-in-left {
    animation: fadeInLeft 0.6s ease-out forwards;
}

.fade-in-right {
    animation: fadeInRight 0.6s ease-out forwards;
}

/* ===== RESPONSIVE DESIGN ===== */
@media (max-width: 1024px) {
    :root {
        --container-padding: var(--spacing-2xl);
    }

    .hero-content {
        gap: var(--spacing-4xl);
    }

    .about-content {
        gap: var(--spacing-4xl);
    }

    .contact-content {
        gap: var(--spacing-4xl);
    }

    .skills-grid {
        grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    }
}

@media (max-width: 768px) {
    :root {
        --font-size-6xl: 2.5rem;
        --font-size-5xl: 2rem;
        --font-size-4xl: 1.75rem;
        --spacing-8xl: 4rem;
        --spacing-6xl: 3rem;
    }

    .nav-menu {
        position: fixed;
        top: 70px;
        left: 0;
        right: 0;
        background-color: var(--color-background);
        flex-direction: column;
        padding: var(--spacing-3xl);
        box-shadow: var(--shadow-lg);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: var(--transition-normal);
    }

    .nav-menu.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }

    .nav-toggle {
        display: flex;
    }

    .nav-toggle.active .hamburger-line:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }

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

    .nav-toggle.active .hamburger-line:nth-child(3) {
        transform: rotate(-45deg) translate(7px, -6px);
    }

    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
        gap: var(--spacing-4xl);
    }

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

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

    .about-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-4xl);
    }

    .contact-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-4xl);
    }

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

    .other-projects-grid {
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    }

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

    .footer-content {
        flex-direction: column;
        gap: var(--spacing-2xl);
        text-align: center;
    }

    .profile-image {
        width: 250px;
        height: 250px;
    }

    .image-decoration {
        width: 290px;
        height: 290px;
    }
}

@media (max-width: 480px) {
    :root {
        --container-padding: var(--spacing-lg);
        --font-size-6xl: 2rem;
        --font-size-5xl: 1.75rem;
        --font-size-4xl: 1.5rem;
    }

    .hero {
        padding: calc(70px + var(--spacing-4xl)) 0 var(--spacing-6xl);
    }

    .profile-image {
        width: 200px;
        height: 200px;
    }

    .image-decoration {
        width: 240px;
        height: 240px;
    }

    .skill-category,
    .contact-form {
        padding: var(--spacing-2xl);
    }

    .other-project-card {
        padding: var(--spacing-2xl);
    }

    .back-to-top {
        bottom: var(--spacing-2xl);
        right: var(--spacing-2xl);
        width: 45px;
        height: 45px;
    }
}