/* ================ */
/* BASE & VARIABLES */
/* ================ */
:root {
    /* Colors */
    --primary: #4361ee;
    --primary-dark: #3a56d4;
    --primary-light: #ebf0ff;
    --secondary: #7209b7;
    --accent: #4cc9f0;
    --text: #2b2d42;
    --text-light: #8d99ae;
    --bg: #ffffff;
    --bg-secondary: #f8f9fa;
    --bg-dark: #212529;
    --border: #dee2e6;
    --success: #4caf50;
    --warning: #ff9800;
    --error: #f44336;
    --info: #2196f3;
    
    /* Dark Mode */
    --dark-primary: #4895ef;
    --dark-primary-dark: #3a7bc8;
    --dark-primary-light: #1a2a4a;
    --dark-secondary: #b5179e;
    --dark-accent: #4cc9f0;
    --dark-text: #f8f9fa;
    --dark-text-light: #adb5bd;
    --dark-bg: #121212;
    --dark-bg-secondary: #1e1e1e;
    --dark-bg-dark: #0a0a0a;
    --dark-border: #343a40;
    
    /* Typography */
    --font-main: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-mono: 'JetBrains Mono', monospace;
    --font-size-base: 1rem; /* 16px */
    --font-size-sm: 0.875rem; /* 14px */
    --font-size-lg: 1.125rem; /* 18px */
    --font-size-xl: 1.25rem; /* 20px */
    --font-size-xxl: 1.5rem; /* 24px */
    --line-height: 1.6;
    
    /* Spacing */
    --space-xs: 0.25rem; /* 4px */
    --space-sm: 0.5rem; /* 8px */
    --space-md: 1rem; /* 16px */
    --space-lg: 1.5rem; /* 24px */
    --space-xl: 2rem; /* 32px */
    --space-xxl: 3rem; /* 48px */
    
    /* Borders */
    --radius-sm: 0.25rem; /* 4px */
    --radius-md: 0.5rem; /* 8px */
    --radius-lg: 1rem; /* 16px */
    --radius-full: 9999px;
    
    /* Shadows */
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.12);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.1);
    --shadow-inset: inset 0 2px 4px rgba(0, 0, 0, 0.05);
    
    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
    
    /* Layout */
    --max-width: 1440px;
    --header-height: 80px;
    --footer-height: 120px;
}

[data-theme="dark"] {
    --primary: var(--dark-primary);
    --primary-dark: var(--dark-primary-dark);
    --primary-light: var(--dark-primary-light);
    --secondary: var(--dark-secondary);
    --accent: var(--dark-accent);
    --text: var(--dark-text);
    --text-light: var(--dark-text-light);
    --bg: var(--dark-bg);
    --bg-secondary: var(--dark-bg-secondary);
    --bg-dark: var(--dark-bg-dark);
    --border: var(--dark-border);
}

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

html {
    scroll-behavior: smooth;
    scroll-padding-top: var(--header-height);
}

body {
    font-family: var(--font-main);
    font-size: var(--font-size-base);
    line-height: var(--line-height);
    color: var(--text);
    background-color: var(--bg);
    overflow-x: hidden;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: var(--space-md);
}

h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.75rem; }
h4 { font-size: 1.5rem; }
h5 { font-size: 1.25rem; }
h6 { font-size: 1rem; }

p {
    margin-bottom: var(--space-md);
    color: var(--text-light);
}

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

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

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

ul, ol {
    padding-left: var(--space-lg);
    margin-bottom: var(--space-md);
}

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

/* ========== */
/* UTILITIES */
/* ========== */
.container {
    width: 100%;
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--space-lg);
}

.section {
    padding: var(--space-xxl) 0;
    position: relative;
}

.section-header {
    margin-bottom: var(--space-xxl);
    text-align: center;
}

.section-title {
    font-size: 2.5rem;
    margin-bottom: var(--space-sm);
    position: relative;
    display: inline-block;
}

.section-title span {
    color: var(--primary);
}

.section-subtitle {
    font-size: var(--font-size-lg);
    color: var(--text-light);
    max-width: 700px;
    margin: 0 auto;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    padding: var(--space-sm) var(--space-lg);
    border-radius: var(--radius-md);
    font-weight: 600;
    transition: all var(--transition-normal);
    border: 2px solid transparent;
    cursor: pointer;
}

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

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

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

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

.btn-lg {
    padding: var(--space-md) var(--space-xl);
    font-size: var(--font-size-lg);
}

.btn-icon {
    padding: var(--space-sm);
    border-radius: 50%;
}

/* ========== */
/* COMPONENTS */
/* ========== */
/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: var(--header-height);
    background-color: var(--bg);
    box-shadow: var(--shadow-sm);
    z-index: 1000;
    transition: all var(--transition-normal);
}

.navbar.scrolled {
    box-shadow: var(--shadow-md);
    background-color: rgba(var(--bg), 0.95);
    backdrop-filter: blur(10px);
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 100%;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text);
}

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

.nav-links {
    display: flex;
    align-items: center;
    gap: var(--space-lg);
}

.nav-link {
    font-weight: 500;
    position: relative;
    padding: var(--space-sm) 0;
}

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

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

.theme-toggle {
    background: none;
    border: none;
    color: var(--text);
    font-size: 1.2rem;
    cursor: pointer;
    padding: var(--space-sm);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-normal);
}

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

.hamburger {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--space-sm);
    position: relative;
    width: 30px;
    height: 24px;
}

.hamburger-box {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.hamburger-inner {
    width: 100%;
    height: 2px;
    background-color: var(--text);
    position: relative;
    transition: all var(--transition-normal);
}

.hamburger-inner::before,
.hamburger-inner::after {
    content: '';
    position: absolute;
    width: 100%;
    height: 2px;
    background-color: var(--text);
    left: 0;
    transition: all var(--transition-normal);
}

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

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

.hamburger.active .hamburger-inner {
    background-color: transparent;
}

.hamburger.active .hamburger-inner::before {
    transform: translateY(8px) rotate(45deg);
}

.hamburger.active .hamburger-inner::after {
    transform: translateY(-8px) rotate(-45deg);
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: var(--header-height);
    background: linear-gradient(135deg, var(--bg-secondary) 0%, var(--bg) 100%);
    position: relative;
    overflow: hidden;
}

.hero .container {
    display: flex;
    align-items: center;
    gap: var(--space-xxl);
    position: relative;
    z-index: 1;
}

.hero-content {
    flex: 1;
}

.hero-title {
    font-size: 3.5rem;
    margin-bottom: var(--space-md);
    line-height: 1.1;
}

.hero-title .greeting {
    display: block;
    font-size: 1.5rem;
    color: var(--text-light);
    margin-bottom: var(--space-sm);
}

.hero-title .name {
    color: var(--primary);
}

.typewriter {
    font-size: 1.5rem;
    font-weight: 500;
    color: var(--text-light);
    margin-bottom: var(--space-lg);
    height: 1.8em;
    display: flex;
    align-items: center;
}

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

.typewriter-cursor {
    color: var(--primary);
    animation: blink 1s infinite;
}

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

.hero-text {
    font-size: var(--font-size-lg);
    margin-bottom: var(--space-xl);
    max-width: 600px;
}

.hero-actions {
    display: flex;
    gap: var(--space-md);
}

.hero-visual {
    flex: 1;
    position: relative;
}

.visual-container {
    position: relative;
    max-width: 600px;
    margin: 0 auto;
}

.code-editor {
    background-color: var(--bg-dark);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-xl);
    transform: perspective(1000px) rotateX(10deg) rotateY(-10deg);
    transition: transform var(--transition-normal);
}

.code-editor:hover {
    transform: perspective(1000px) rotateX(0) rotateY(0);
}

.editor-header {
    display: flex;
    align-items: center;
    padding: var(--space-sm) var(--space-md);
    background-color: rgba(0, 0, 0, 0.2);
}

.dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    margin-right: var(--space-sm);
}

.dot.red { background-color: #ff5f56; }
.dot.yellow { background-color: #ffbd2e; }
.dot.green { background-color: #27c93f; }

.file-name {
    margin-left: var(--space-md);
    font-family: var(--font-mono);
    font-size: var(--font-size-sm);
    color: var(--text-light);
}

.editor-content {
    padding: var(--space-md);
    font-family: var(--font-mono);
    font-size: var(--font-size-sm);
    line-height: 1.5;
    color: #f8f8f2;
    overflow-x: auto;
}

.editor-content code {
    display: block;
    white-space: pre;
}

.tech-sphere {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 300px;
    height: 300px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(var(--primary), 0.1) 0%, transparent 70%);
    animation: float 6s ease-in-out infinite;
}

.orbiting-tech {
    position: relative;
    width: 100%;
    height: 100%;
}

.tech-icon {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    font-size: 1.5rem;
    color: var(--primary);
    animation: orbit 20s linear infinite;
}

.tech-icon:nth-child(1) { animation-delay: 0s; }
.tech-icon:nth-child(2) { animation-delay: -3s; }
.tech-icon:nth-child(3) { animation-delay: -6s; }
.tech-icon:nth-child(4) { animation-delay: -9s; }
.tech-icon:nth-child(5) { animation-delay: -12s; }
.tech-icon:nth-child(6) { animation-delay: -15s; }

@keyframes orbit {
    from { transform: rotate(0deg) translateX(120px) rotate(0deg); }
    to { transform: rotate(360deg) translateX(120px) rotate(-360deg); }
}

@keyframes float {
    0%, 100% { transform: translate(-50%, -50%) translateY(0); }
    50% { transform: translate(-50%, -50%) translateY(-20px); }
}

/* Projects Section */
.projects {
    background-color: var(--bg);
    position: relative;
}

.project-filters {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: var(--space-sm);
    margin-bottom: var(--space-xl);
}

.filter-btn {
    padding: var(--space-sm) var(--space-md);
    border-radius: var(--radius-md);
    background-color: transparent;
    border: 1px solid var(--border);
    color: var(--text-light);
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-normal);
}

.filter-btn:hover,
.filter-btn.active {
    background-color: var(--primary);
    color: white;
    border-color: var(--primary);
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: var(--space-xl);
    margin-bottom: var(--space-xl);
}

.project-card {
    background-color: var(--bg-secondary);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: all var(--transition-normal);
    display: flex;
    flex-direction: column;
}

.project-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-xl);
}

.project-media {
    position: relative;
    height: 220px;
    overflow: hidden;
}

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

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

.project-card:hover .project-image img {
    transform: scale(1.1);
}

.project-links {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    display: flex;
    background: linear-gradient(to top, rgba(0, 0, 0, 0.8), transparent);
    padding: var(--space-md);
    justify-content: flex-end;
    gap: var(--space-md);
    opacity: 0;
    transition: opacity var(--transition-normal);
}

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

.project-link {
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
    padding: var(--space-xs) var(--space-sm);
    background-color: var(--primary);
    color: white;
    border-radius: var(--radius-sm);
    font-size: var(--font-size-sm);
    font-weight: 500;
}

.project-link.disabled {
    background-color: var(--text-light);
    cursor: not-allowed;
}

.project-content {
    padding: var(--space-lg);
    flex: 1;
    display: flex;
    flex-direction: column;
}

.project-title {
    font-size: var(--font-size-xl);
    margin-bottom: var(--space-sm);
}

.project-description {
    margin-bottom: var(--space-md);
    flex: 1;
}

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

.project-stats {
    display: flex;
    gap: var(--space-md);
}

.stat {
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
    font-size: var(--font-size-sm);
    color: var(--text-light);
}

.stat i {
    color: var(--primary);
}

.project-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-sm);
}

.tag {
    background-color: var(--bg);
    color: var(--primary);
    padding: var(--space-xs) var(--space-sm);
    border-radius: var(--radius-full);
    font-size: var(--font-size-sm);
    font-weight: 500;
}

.section-footer {
    text-align: center;
    margin-top: var(--space-xl);
}

/* Expertise Section */
.expertise {
    background-color: var(--bg-secondary);
}

.expertise-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--space-xl);
    margin-bottom: var(--space-xxl);
}

.expertise-card {
    background-color: var(--bg);
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    box-shadow: var(--shadow-md);
    transition: all var(--transition-normal);
    text-align: center;
}

.expertise-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-xl);
}

.expertise-icon {
    width: 60px;
    height: 60px;
    background-color: var(--primary-light);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--space-md);
    font-size: 1.5rem;
    color: var(--primary);
}

.expertise-title {
    font-size: var(--font-size-xl);
    margin-bottom: var(--space-md);
}

.expertise-list {
    list-style: none;
    padding-left: 0;
    text-align: left;
}

.expertise-list li {
    margin-bottom: var(--space-sm);
    position: relative;
    padding-left: var(--space-md);
}

.expertise-list li::before {
    content: '▹';
    position: absolute;
    left: 0;
    color: var(--primary);
}

.skills-section {
    display: flex;
    gap: var(--space-xxl);
    align-items: center;
}

.skills-visual {
    flex: 1;
}

.skills-radar {
    width: 100%;
    max-width: 400px;
    margin: 0 auto;
}

.skills-details {
    flex: 1;
}

.skills-title {
    font-size: var(--font-size-xl);
    margin-bottom: var(--space-md);
}

.skills-progress {
    display: flex;
    flex-direction: column;
    gap: var(--space-lg);
}

.skill-item {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.skill-info {
    display: flex;
    justify-content: space-between;
}

.skill-name {
    font-weight: 500;
}

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

.skill-bar {
    height: 8px;
    background-color: var(--border);
    border-radius: var(--radius-full);
    overflow: hidden;
}

.skill-progress {
    height: 100%;
    background-color: var(--primary);
    border-radius: var(--radius-full);
    width: 0;
    transition: width 1.5s ease;
}

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

.timeline {
    position: relative;
    max-width: 800px;
    margin: 0 auto var(--space-xxl);
    padding-left: var(--space-lg);
}

.timeline::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 2px;
    height: 100%;
    background-color: var(--primary);
}

.timeline-item {
    position: relative;
    padding-bottom: var(--space-xxl);
}

.timeline-item:last-child {
    padding-bottom: 0;
}

.timeline-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: -9px;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background-color: var(--primary);
    border: 3px solid var(--bg);
}

.timeline-date {
    position: absolute;
    top: 0;
    left: -150px;
    width: 120px;
    text-align: right;
    font-weight: 600;
    color: var(--primary);
}

.timeline-content {
    background-color: var(--bg-secondary);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    box-shadow: var(--shadow-md);
}

.timeline-title {
    font-size: var(--font-size-lg);
    margin-bottom: var(--space-sm);
}

.timeline-title span {
    color: var(--primary);
    font-weight: 400;
}

.timeline-highlights {
    list-style: none;
    padding-left: var(--space-md);
}

.timeline-highlights li {
    position: relative;
    padding-left: var(--space-md);
    margin-bottom: var(--space-sm);
}

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

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

.education-title {
    text-align: center;
    margin-bottom: var(--space-xl);
    font-size: var(--font-size-xl);
}

.education-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--space-xl);
}

.education-card {
    background-color: var(--bg-secondary);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    text-align: center;
    box-shadow: var(--shadow-md);
    transition: all var(--transition-normal);
}

.education-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.education-icon {
    width: 60px;
    height: 60px;
    background-color: var(--primary-light);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--space-md);
    font-size: 1.5rem;
    color: var(--primary);
}

.education-name {
    font-size: var(--font-size-lg);
    margin-bottom: var(--space-sm);
}

.education-institution {
    color: var(--primary);
    margin-bottom: var(--space-xs);
    font-weight: 500;
}

.education-year {
    color: var(--text-light);
    font-size: var(--font-size-sm);
}

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

.contact-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--space-xxl);
    max-width: 1200px;
    margin: 0 auto;
}

.contact-info {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--space-lg);
}

.contact-card {
    background-color: var(--bg);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    box-shadow: var(--shadow-md);
    transition: all var(--transition-normal);
    text-align: center;
}

.contact-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.contact-icon {
    width: 60px;
    height: 60px;
    background-color: var(--primary-light);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--space-md);
    font-size: 1.5rem;
    color: var(--primary);
}

.contact-title {
    font-size: var(--font-size-lg);
    margin-bottom: var(--space-sm);
}

.contact-link {
    display: block;
    color: var(--primary);
    font-weight: 500;
    margin-bottom: var(--space-xs);
}

.contact-text {
    color: var(--text-light);
    font-size: var(--font-size-sm);
}

.contact-form {
    background-color: var(--bg);
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    box-shadow: var(--shadow-md);
}

.form-group {
    margin-bottom: var(--space-lg);
}

.form-group label {
    display: block;
    margin-bottom: var(--space-sm);
    font-weight: 500;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: var(--space-md);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    background-color: var(--bg-secondary);
    color: var(--text);
    font-family: inherit;
    transition: all var(--transition-normal);
}

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

.form-group textarea {
    min-height: 150px;
    resize: vertical;
}

.form-status {
    margin-top: var(--space-md);
    padding: var(--space-md);
    border-radius: var(--radius-md);
    display: none;
}

.form-status.success {
    display: block;
    background-color: rgba(var(--success), 0.1);
    color: var(--success);
}

.form-status.error {
    display: block;
    background-color: rgba(var(--error), 0.1);
    color: var(--error);
}

/* Footer */
.footer {
    background-color: var(--bg-dark);
    color: var(--text-light);
    padding: var(--space-xxl) 0 0;
    margin-top: auto;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--space-xxl);
    margin-bottom: var(--space-xxl);
}

.footer-brand .logo {
    font-size: 1.75rem;
    margin-bottom: var(--space-md);
    display: inline-block;
    color: white;
}

.footer-text {
    margin-bottom: var(--space-lg);
    font-size: var(--font-size-sm);
}

.footer-title {
    font-size: var(--font-size-lg);
    color: white;
    margin-bottom: var(--space-lg);
}

.footer-links ul {
    list-style: none;
    padding-left: 0;
}

.footer-links li {
    margin-bottom: var(--space-sm);
}

.footer-links a {
    color: var(--text-light);
    transition: color var(--transition-fast);
}

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

.newsletter-form {
    display: flex;
    margin-top: var(--space-md);
}

.newsletter-form input {
    flex: 1;
    padding: var(--space-sm) var(--space-md);
    border: 1px solid var(--border);
    border-radius: var(--radius-md) 0 0 var(--radius-md);
    background-color: var(--bg-dark);
    color: white;
}

.newsletter-form button {
    padding: var(--space-sm) var(--space-md);
    background-color: var(--primary);
    color: white;
    border-radius: 0 var(--radius-md) var(--radius-md) 0;
    transition: background-color var(--transition-fast);
}

.newsletter-form button:hover {
    background-color: var(--primary-dark);
}

.footer-bottom {
    border-top: 1px solid var(--border);
    padding: var(--space-lg) 0;
}

.copyright {
    text-align: center;
    font-size: var(--font-size-sm);
    margin-bottom: var(--space-md);
}

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

.social-links a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background-color: rgba(255, 255, 255, 0.1);
    color: white;
    transition: all var(--transition-fast);
}

.social-links a:hover {
    background-color: var(--primary);
    transform: translateY(-3px);
}

/* Back to Top */
.back-to-top {
    position: fixed;
    bottom: var(--space-lg);
    right: var(--space-lg);
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background-color: var(--primary);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-lg);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
    z-index: 999;
}

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

.back-to-top:hover {
    background-color: var(--primary-dark);
    transform: translateY(-3px);
}

/* ============= */
/* MEDIA QUERIES */
/* ============= */
@media (max-width: 1200px) {
    .hero .container {
        flex-direction: column;
        text-align: center;
    }
    
    .hero-actions {
        justify-content: center;
    }
    
    .hero-text {
        margin-left: auto;
        margin-right: auto;
    }
    
    .visual-container {
        margin-top: var(--space-xl);
    }
    
    .skills-section {
        flex-direction: column;
    }
    
    .skills-details {
        width: 100%;
    }
}

@media (max-width: 992px) {
    .nav-links {
        position: fixed;
        top: var(--header-height);
        left: 0;
        width: 100%;
        background-color: var(--bg);
        flex-direction: column;
        padding: var(--space-lg);
        box-shadow: var(--shadow-md);
        transform: translateY(-100%);
        opacity: 0;
        transition: all var(--transition-normal);
        z-index: 999;
    }
    
    .nav-links.active {
        transform: translateY(0);
        opacity: 1;
    }
    
    .hamburger {
        display: flex;
    }
    
    .timeline-date {
        position: relative;
        left: 0;
        width: auto;
        text-align: left;
        margin-bottom: var(--space-sm);
    }
}

@media (max-width: 768px) {
    :root {
        --header-height: 70px;
        --font-size-base: 0.9375rem;
    }
    
    .section {
        padding: var(--space-xl) 0;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-actions {
        flex-direction: column;
    }
    
    .projects-grid {
        grid-template-columns: 1fr;
    }
    
    .contact-container {
        grid-template-columns: 1fr;
    }
    
    .contact-info {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 576px) {
    .container {
        padding: 0 var(--space-md);
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .filter-btn {
        padding: var(--space-xs) var(--space-sm);
        font-size: var(--font-size-sm);
    }
    
    .timeline {
        padding-left: var(--space-md);
    }
    
    .timeline-item::before {
        left: -7px;
        width: 14px;
        height: 14px;
    }
}