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

:root {
    /* Color Palette */
    --primary-color: #1e3a5f;        /* Navy Blue */
    --secondary-color: #4ecdc4;      /* Mint Green */
    --accent-color: #87ceeb;         /* Light Blue */
    --text-dark: #2c3e50;
    --text-light: #6c757d;
    --bg-light: #f8f9fa;
    --bg-white: #ffffff;
    --border-color: #e9ecef;
    --success-color: #28a745;
    --warning-color: #ffc107;
    --error-color: #dc3545;
    
    /* Typography */
    --font-primary: 'Noto Sans KR', sans-serif;
    --font-secondary: 'Poppins', sans-serif;
    
    /* Spacing */
    --section-padding: 80px 0;
    --container-padding: 0 20px;
    
    /* Transitions */
    --transition-speed: 0.3s;
    
    /* Border Radius */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    
    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.08);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.12);
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    color: var(--text-dark);
    line-height: 1.7;
    background-color: var(--bg-white);
    overflow-x: hidden;
}

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

/* ===================================
   Navigation
   =================================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.98);
    box-shadow: var(--shadow-sm);
    z-index: 1000;
    transition: all var(--transition-speed);
}

.navbar.scrolled {
    box-shadow: var(--shadow-md);
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 20px;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
    text-decoration: none;
    font-family: var(--font-secondary);
    letter-spacing: -0.5px;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
    align-items: center;
}

.nav-link {
    color: var(--text-dark);
    text-decoration: none;
    font-weight: 500;
    transition: color var(--transition-speed);
    position: relative;
}

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

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

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

.nav-link-cta {
    background: var(--secondary-color);
    color: white;
    padding: 0.5rem 1.5rem;
    border-radius: var(--radius-sm);
}

.nav-link-cta::after {
    display: none;
}

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

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 4px;
    background: none;
    border: none;
    cursor: pointer;
}

.nav-toggle span {
    width: 25px;
    height: 3px;
    background: var(--primary-color);
    transition: all var(--transition-speed);
}

/* ===================================
   Hero Section
   =================================== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    padding: 120px 0 80px;
    background: linear-gradient(135deg, #f8f9fa 0%, #e9f5f5 100%);
    overflow: hidden;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        radial-gradient(circle at 20% 50%, rgba(78, 205, 196, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(30, 58, 95, 0.1) 0%, transparent 50%);
    z-index: 0;
}

.hero-content {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 4rem;
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero-text {
    animation: fadeInUp 0.8s ease-out;
}

.hero-title {
    font-size: 3rem;
    font-weight: 700;
    line-height: 1.3;
    margin-bottom: 1.5rem;
    color: var(--primary-color);
}

.hero-title .highlight {
    color: var(--secondary-color);
    position: relative;
    display: inline-block;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--text-light);
    margin-bottom: 2rem;
    line-height: 1.8;
}

.hero-keywords {
    display: flex;
    gap: 1rem;
    margin-bottom: 2.5rem;
    flex-wrap: wrap;
}

.keyword {
    background: white;
    color: var(--primary-color);
    padding: 0.5rem 1.25rem;
    border-radius: 50px;
    font-weight: 500;
    box-shadow: var(--shadow-sm);
    border: 2px solid var(--secondary-color);
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

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

.profile-card {
    background: white;
    padding: 2rem;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    text-align: center;
    width: 100%;
    max-width: 350px;
}

.profile-placeholder {
    width: 200px;
    height: 200px;
    margin: 0 auto 1.5rem;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 120px;
}

.profile-info h3 {
    font-size: 1.75rem;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.profile-info p {
    color: var(--text-light);
    font-size: 1rem;
}

.scroll-indicator {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    text-align: center;
    color: var(--text-light);
    font-size: 0.875rem;
    animation: bounce 2s infinite;
}

.scroll-indicator i {
    display: block;
    margin-top: 0.5rem;
}

/* ===================================
   Buttons
   =================================== */
.btn {
    display: inline-block;
    padding: 0.875rem 2rem;
    border-radius: var(--radius-sm);
    font-weight: 600;
    text-decoration: none;
    transition: all var(--transition-speed);
    border: none;
    cursor: pointer;
    font-family: var(--font-primary);
    font-size: 1rem;
}

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

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

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

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

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

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

.btn-full {
    width: 100%;
    text-align: center;
}

/* ===================================
   Sections
   =================================== */
section {
    padding: var(--section-padding);
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 1rem;
    color: var(--primary-color);
}

.section-subtitle {
    text-align: center;
    color: var(--text-light);
    font-size: 1.125rem;
    margin-bottom: 3rem;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

/* Page Header */
.page-header {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    text-align: center;
    padding: 150px 0 80px;
    margin-bottom: 0;
}

.page-header h1 {
    font-size: 3rem;
    margin-bottom: 1rem;
    font-weight: 700;
}

.page-header p {
    font-size: 1.25rem;
    opacity: 0.95;
    margin-bottom: 2rem;
}

/* ===================================
   Competencies Section
   =================================== */
.competencies {
    background: var(--bg-light);
}

.competencies-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.competency-card {
    background: white;
    padding: 2.5rem;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-speed);
}

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

.competency-icon {
    width: 70px;
    height: 70px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
    color: white;
    font-size: 2rem;
}

.competency-card h3 {
    font-size: 1.5rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.competency-card > p {
    color: var(--text-light);
    margin-bottom: 1.5rem;
    line-height: 1.7;
}

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

.competency-details li {
    padding: 0.5rem 0;
    padding-left: 1.5rem;
    position: relative;
    color: var(--text-dark);
}

.competency-details li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--secondary-color);
    font-weight: 700;
}

/* ===================================
   Timeline
   =================================== */
.highlights {
    background: white;
}

.timeline {
    max-width: 800px;
    margin: 3rem auto;
    position: relative;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 3px;
    background: var(--secondary-color);
}

.timeline-item {
    position: relative;
    padding-left: 3rem;
    margin-bottom: 2.5rem;
}

.timeline-marker {
    position: absolute;
    left: -8px;
    top: 0;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: var(--secondary-color);
    border: 4px solid white;
    box-shadow: 0 0 0 3px var(--secondary-color);
}

.timeline-content {
    background: var(--bg-light);
    padding: 1.5rem;
    border-radius: var(--radius-md);
}

.timeline-date {
    display: inline-block;
    background: var(--secondary-color);
    color: white;
    padding: 0.25rem 0.75rem;
    border-radius: 50px;
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
}

.timeline-content h3 {
    color: var(--primary-color);
    margin-bottom: 0.5rem;
    font-size: 1.25rem;
}

.timeline-content p {
    color: var(--text-light);
    line-height: 1.6;
}

/* ===================================
   CTA Section
   =================================== */
.cta-section {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    text-align: center;
    padding: 80px 20px;
}

.cta-section h2 {
    font-size: 2.25rem;
    margin-bottom: 1rem;
}

.cta-section p {
    font-size: 1.125rem;
    margin-bottom: 2rem;
    opacity: 0.95;
}

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

.cta-section .btn:hover {
    background: var(--bg-light);
    transform: translateY(-2px);
}

/* ===================================
   About Page Styles
   =================================== */
.profile-section {
    background: white;
    padding: 60px 0;
}

.profile-grid {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 4rem;
    align-items: start;
}

.profile-image-wrapper {
    text-align: center;
    position: sticky;
    top: 100px;
}

.profile-image-large {
    width: 250px;
    height: 250px;
    margin: 0 auto 2rem;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 150px;
    box-shadow: var(--shadow-lg);
}

.profile-basic-info h2 {
    font-size: 2rem;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.profile-subtitle {
    color: var(--text-light);
    font-size: 1.125rem;
    margin-bottom: 1.5rem;
}

.profile-tags {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.profile-tags span {
    background: var(--bg-light);
    color: var(--primary-color);
    padding: 0.5rem 1rem;
    border-radius: var(--radius-sm);
    font-weight: 500;
    border-left: 3px solid var(--secondary-color);
}

.profile-description h3 {
    font-size: 1.75rem;
    color: var(--primary-color);
    margin-bottom: 1.5rem;
}

.description-content p {
    margin-bottom: 1.25rem;
    line-height: 1.8;
    color: var(--text-dark);
}

.description-content strong {
    color: var(--primary-color);
    font-weight: 600;
}

/* ===================================
   Skills Section
   =================================== */
.skills-section {
    background: var(--bg-light);
}

.skills-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    margin-top: 3rem;
}

.skills-category {
    background: white;
    padding: 2.5rem;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
}

.skills-category h3 {
    font-size: 1.75rem;
    color: var(--primary-color);
    margin-bottom: 2rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.skill-group {
    margin-bottom: 2.5rem;
}

.skill-group:last-child {
    margin-bottom: 0;
}

.skill-group h4 {
    font-size: 1.125rem;
    color: var(--text-dark);
    margin-bottom: 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid var(--secondary-color);
}

.skill-item {
    margin-bottom: 1.25rem;
}

.skill-header {
    display: flex;
    justify-content: space-between;
    margin-bottom: 0.5rem;
}

.skill-name {
    font-weight: 500;
    color: var(--text-dark);
}

.skill-level {
    color: var(--secondary-color);
    font-weight: 600;
}

.skill-bar {
    height: 8px;
    background: var(--bg-light);
    border-radius: 50px;
    overflow: hidden;
}

.skill-progress {
    height: 100%;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    border-radius: 50px;
    transition: width 1s ease-out;
}

.skill-badges {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
}

.badge {
    background: var(--bg-light);
    color: var(--primary-color);
    padding: 0.5rem 1rem;
    border-radius: 50px;
    font-size: 0.875rem;
    font-weight: 500;
    border: 1px solid var(--border-color);
}

.soft-skills-list {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.25rem;
}

.soft-skill-card {
    background: var(--bg-light);
    padding: 1.5rem;
    border-radius: var(--radius-sm);
    text-align: center;
    transition: all var(--transition-speed);
}

.soft-skill-card:hover {
    background: var(--secondary-color);
    color: white;
    transform: translateY(-4px);
}

.soft-skill-icon {
    font-size: 2rem;
    color: var(--secondary-color);
    margin-bottom: 0.75rem;
}

.soft-skill-card:hover .soft-skill-icon {
    color: white;
}

.soft-skill-card h4 {
    font-size: 1rem;
    margin-bottom: 0.25rem;
}

.soft-skill-card p {
    font-size: 0.875rem;
    opacity: 0.8;
}

/* ===================================
   Values Section
   =================================== */
.values-section {
    background: white;
}

.values-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.value-card {
    background: var(--bg-light);
    padding: 2.5rem;
    border-radius: var(--radius-md);
    border-top: 4px solid var(--secondary-color);
    transition: all var(--transition-speed);
}

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

.value-number {
    font-size: 3rem;
    font-weight: 700;
    color: var(--secondary-color);
    opacity: 0.3;
    line-height: 1;
    margin-bottom: 1rem;
}

.value-card h3 {
    font-size: 1.25rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.value-card p {
    color: var(--text-light);
    line-height: 1.7;
}

/* ===================================
   Portfolio Page Styles
   =================================== */
.portfolio-filter-section {
    background: var(--bg-light);
    padding: 2rem 0;
}

.filter-buttons {
    display: flex;
    justify-content: center;
    gap: 1rem;
    flex-wrap: wrap;
}

.filter-btn {
    padding: 0.75rem 1.5rem;
    border: 2px solid var(--primary-color);
    background: white;
    color: var(--primary-color);
    border-radius: var(--radius-sm);
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-speed);
    font-family: var(--font-primary);
}

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

.portfolio-section {
    background: white;
}

.project-card {
    background: white;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 3rem;
    margin-bottom: 3rem;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-speed);
}

.project-card:hover {
    box-shadow: var(--shadow-lg);
}

.project-header {
    margin-bottom: 2rem;
}

.project-badge {
    display: inline-block;
    background: var(--secondary-color);
    color: white;
    padding: 0.5rem 1.25rem;
    border-radius: 50px;
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 1rem;
}

.project-badge.award {
    background: linear-gradient(135deg, #ffd700, #ffed4e);
    color: var(--primary-color);
}

.project-header h2 {
    font-size: 2rem;
    color: var(--primary-color);
    margin-bottom: 0.75rem;
}

.project-subtitle {
    color: var(--text-light);
    font-size: 1.125rem;
}

.project-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 2rem;
    padding: 1.5rem;
    background: var(--bg-light);
    border-radius: var(--radius-sm);
    margin-bottom: 2rem;
}

.meta-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-dark);
}

.meta-item i {
    color: var(--secondary-color);
}

.project-content {
    margin-top: 2rem;
}

.project-section {
    margin-bottom: 2.5rem;
}

.project-section h3 {
    font-size: 1.5rem;
    color: var(--primary-color);
    margin-bottom: 1.25rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.project-section h3 i {
    color: var(--secondary-color);
}

.project-section p {
    line-height: 1.8;
    color: var(--text-dark);
    margin-bottom: 1rem;
}

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

.project-list li {
    margin-bottom: 1.5rem;
    padding-left: 1.5rem;
    position: relative;
}

.project-list li::before {
    content: '▸';
    position: absolute;
    left: 0;
    color: var(--secondary-color);
    font-weight: 700;
}

.project-list strong {
    display: block;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.project-list p {
    color: var(--text-light);
    margin-bottom: 0;
}

.results-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
    margin: 1.5rem 0;
}

.result-card {
    background: var(--bg-light);
    padding: 2rem;
    border-radius: var(--radius-md);
    text-align: center;
    border-top: 4px solid var(--secondary-color);
}

.result-card.award {
    border-top-color: #ffd700;
}

.result-number {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.result-card p {
    color: var(--text-light);
    font-size: 0.875rem;
    margin: 0;
}

.result-description {
    margin-top: 1.5rem;
    padding: 1.25rem;
    background: var(--bg-light);
    border-left: 4px solid var(--secondary-color);
    border-radius: var(--radius-sm);
}

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

.learning-list li {
    padding: 0.75rem 0;
    padding-left: 2rem;
    position: relative;
    line-height: 1.7;
    color: var(--text-dark);
}

.learning-list li::before {
    content: '💡';
    position: absolute;
    left: 0;
}

.project-links {
    display: flex;
    gap: 1rem;
    margin-top: 2rem;
    flex-wrap: wrap;
}

.project-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    background: var(--secondary-color);
    color: white;
    text-decoration: none;
    border-radius: var(--radius-sm);
    font-weight: 600;
    transition: all var(--transition-speed);
}

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

/* ===================================
   Resume Page Styles
   =================================== */
.resume-section {
    background: white;
}

.resume-container {
    max-width: 900px;
    margin: 0 auto;
}

.resume-block {
    margin-bottom: 4rem;
}

.resume-block-title {
    font-size: 2rem;
    color: var(--primary-color);
    margin-bottom: 2rem;
    padding-bottom: 1rem;
    border-bottom: 3px solid var(--secondary-color);
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.resume-summary {
    background: var(--bg-light);
    padding: 2rem;
    border-radius: var(--radius-md);
    border-left: 4px solid var(--secondary-color);
}

.resume-summary p {
    line-height: 1.8;
    color: var(--text-dark);
    margin-bottom: 1.5rem;
}

.resume-highlights {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
}

.resume-highlights span {
    background: white;
    color: var(--primary-color);
    padding: 0.5rem 1rem;
    border-radius: var(--radius-sm);
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.resume-highlights i {
    color: var(--secondary-color);
}

.resume-timeline {
    margin-top: 1.5rem;
}

.resume-item {
    background: var(--bg-light);
    padding: 2rem;
    border-radius: var(--radius-md);
    margin-bottom: 1.5rem;
    border-left: 4px solid var(--secondary-color);
}

.resume-item-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 1.25rem;
    flex-wrap: wrap;
    gap: 1rem;
}

.resume-item-header h3 {
    font-size: 1.5rem;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.resume-subtitle {
    color: var(--text-light);
    font-size: 1rem;
}

.resume-subtitle.award-text {
    color: #ffd700;
    font-weight: 600;
    background: var(--primary-color);
    padding: 0.25rem 0.75rem;
    border-radius: var(--radius-sm);
}

.resume-date {
    background: var(--secondary-color);
    color: white;
    padding: 0.5rem 1rem;
    border-radius: var(--radius-sm);
    font-weight: 600;
    font-size: 0.875rem;
    white-space: nowrap;
}

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

.resume-details li {
    padding: 0.5rem 0;
    padding-left: 1.5rem;
    position: relative;
    line-height: 1.7;
    color: var(--text-dark);
}

.resume-details li::before {
    content: '•';
    position: absolute;
    left: 0;
    color: var(--secondary-color);
    font-weight: 700;
    font-size: 1.25rem;
}

.certifications-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 1.5rem;
    margin-top: 1.5rem;
}

.certification-card {
    background: var(--bg-light);
    padding: 2rem;
    border-radius: var(--radius-md);
    text-align: center;
    transition: all var(--transition-speed);
}

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

.certification-card i {
    font-size: 2.5rem;
    color: var(--secondary-color);
    margin-bottom: 1rem;
}

.certification-card h4 {
    font-size: 1rem;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.certification-card p {
    color: var(--text-light);
    font-size: 0.875rem;
    margin-bottom: 0.75rem;
}

.cert-date {
    display: inline-block;
    background: var(--secondary-color);
    color: white;
    padding: 0.25rem 0.75rem;
    border-radius: 50px;
    font-size: 0.75rem;
    font-weight: 600;
}

.skills-resume {
    margin-top: 1.5rem;
}

.skill-category-resume {
    margin-bottom: 2rem;
}

.skill-category-resume h4 {
    font-size: 1.125rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.skill-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
}

.skill-tags span {
    background: var(--bg-light);
    color: var(--text-dark);
    padding: 0.5rem 1rem;
    border-radius: 50px;
    font-size: 0.875rem;
    border: 1px solid var(--border-color);
}

/* ===================================
   Contact Page Styles
   =================================== */
.contact-section {
    background: white;
}

.contact-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: 3rem;
}

.contact-form-wrapper h2 {
    font-size: 2rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.contact-form-wrapper > p {
    color: var(--text-light);
    margin-bottom: 2rem;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    color: var(--text-dark);
    font-weight: 500;
}

.required {
    color: var(--error-color);
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 0.875rem;
    border: 2px solid var(--border-color);
    border-radius: var(--radius-sm);
    font-family: var(--font-primary);
    font-size: 1rem;
    transition: border-color var(--transition-speed);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--secondary-color);
}

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

.form-message {
    margin-top: 1rem;
    padding: 1rem;
    border-radius: var(--radius-sm);
    display: none;
}

.form-message.success {
    background: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
    display: block;
}

.form-message.error {
    background: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
    display: block;
}

.contact-info-wrapper {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.contact-info-card,
.contact-cta-card,
.social-card {
    background: var(--bg-light);
    padding: 2rem;
    border-radius: var(--radius-md);
}

.contact-info-card h3,
.contact-cta-card h3,
.social-card h3 {
    font-size: 1.5rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.contact-info-card p,
.contact-cta-card p {
    color: var(--text-light);
    margin-bottom: 1.5rem;
}

.contact-info-items {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.contact-info-item {
    display: flex;
    gap: 1rem;
}

.contact-icon {
    width: 50px;
    height: 50px;
    background: var(--secondary-color);
    color: white;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    flex-shrink: 0;
}

.contact-details h4 {
    font-size: 0.875rem;
    color: var(--text-light);
    margin-bottom: 0.25rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.contact-details a {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 500;
}

.contact-details a:hover {
    color: var(--secondary-color);
}

.contact-cta-buttons {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.social-links-large {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

.social-link {
    width: 50px;
    height: 50px;
    background: white;
    color: var(--primary-color);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    text-decoration: none;
    transition: all var(--transition-speed);
    border: 2px solid var(--border-color);
}

.social-link:hover {
    background: var(--secondary-color);
    color: white;
    border-color: var(--secondary-color);
    transform: translateY(-4px);
}

/* FAQ Section */
.faq-section {
    background: var(--bg-light);
}

.faq-list {
    max-width: 800px;
    margin: 3rem auto 0;
}

.faq-item {
    background: white;
    border-radius: var(--radius-md);
    margin-bottom: 1rem;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}

.faq-question {
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem;
    background: none;
    border: none;
    text-align: left;
    cursor: pointer;
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--primary-color);
    font-family: var(--font-primary);
    transition: all var(--transition-speed);
}

.faq-question:hover {
    background: var(--bg-light);
}

.faq-question i {
    color: var(--secondary-color);
    transition: transform var(--transition-speed);
}

.faq-item.active .faq-question i {
    transform: rotate(180deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-speed);
}

.faq-item.active .faq-answer {
    max-height: 500px;
}

.faq-answer p {
    padding: 0 1.5rem 1.5rem;
    color: var(--text-dark);
    line-height: 1.7;
}

/* ===================================
   Footer
   =================================== */
.footer {
    background: var(--primary-color);
    color: white;
    padding: 3rem 0 1.5rem;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
    flex-wrap: wrap;
    gap: 2rem;
}

.footer-left h3 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
}

.footer-left p {
    opacity: 0.8;
}

.social-links {
    display: flex;
    gap: 1rem;
}

.social-links a {
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.1);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-sm);
    text-decoration: none;
    transition: all var(--transition-speed);
}

.social-links a:hover {
    background: var(--secondary-color);
    transform: translateY(-4px);
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    opacity: 0.7;
}

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

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% {
        transform: translateY(0) translateX(-50%);
    }
    40% {
        transform: translateY(-10px) translateX(-50%);
    }
    60% {
        transform: translateY(-5px) translateX(-50%);
    }
}

.animate-fade-in {
    animation: fadeInUp 0.8s ease-out;
}

.animate-fade-in-delay {
    animation: fadeInUp 0.8s ease-out 0.2s backwards;
}

.animate-fade-in-delay-2 {
    animation: fadeInUp 0.8s ease-out 0.4s backwards;
}

.animate-fade-in-delay-3 {
    animation: fadeInUp 0.8s ease-out 0.6s backwards;
}

.animate-slide-in {
    animation: slideIn 0.8s ease-out 0.4s backwards;
}

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

/* ===================================
   Responsive Design
   =================================== */
@media (max-width: 1024px) {
    .hero-content {
        grid-template-columns: 1fr;
        gap: 3rem;
    }

    .hero-image {
        order: -1;
    }

    .profile-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .profile-image-wrapper {
        position: static;
    }

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

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

@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: 70px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 70px);
        background: white;
        flex-direction: column;
        padding: 2rem;
        transition: left var(--transition-speed);
        box-shadow: var(--shadow-lg);
    }

    .nav-menu.active {
        left: 0;
    }

    .nav-toggle {
        display: flex;
    }

    .hero-title {
        font-size: 2rem;
    }

    .hero-subtitle {
        font-size: 1rem;
    }

    .section-title {
        font-size: 2rem;
    }

    .page-header h1 {
        font-size: 2.25rem;
    }

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

    .hero-buttons {
        flex-direction: column;
    }

    .btn {
        width: 100%;
        text-align: center;
    }

    .timeline::before {
        left: 10px;
    }

    .timeline-item {
        padding-left: 2.5rem;
    }

    .timeline-marker {
        left: 2px;
    }

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

    .project-meta {
        flex-direction: column;
        gap: 1rem;
    }

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

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

    .footer-content {
        flex-direction: column;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .hero {
        padding: 100px 0 60px;
    }

    .hero-title {
        font-size: 1.75rem;
    }

    .section-title {
        font-size: 1.75rem;
    }

    .page-header {
        padding: 120px 0 60px;
    }

    .page-header h1 {
        font-size: 1.875rem;
    }

    .project-card {
        padding: 1.5rem;
    }

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

/* Print Styles */
@media print {
    .navbar,
    .hero,
    .page-header,
    .cta-section,
    .footer,
    .btn,
    .nav-toggle {
        display: none !important;
    }

    .resume-section {
        padding: 0;
    }

    .resume-block {
        page-break-inside: avoid;
    }
}