/* ===== ROOT VARIABLES ===== */
:root {
    --primary-color: #1976d2;
    --primary-dark: #0d47a1;
    --primary-light: #42a5f5;
    --secondary-color: #26c6da;
    --accent-color: #ff6f00;
    --dark-color: #263238;
    --light-color: #fafafa;
    --surface-color: #ffffff;
    --gray-50: #fafafa;
    --gray-100: #f5f5f5;
    --gray-200: #eeeeee;
    --gray-300: #e0e0e0;
    --gray-400: #bdbdbd;
    --gray-500: #9e9e9e;
    --gray-600: #757575;
    --gray-700: #616161;
    --gray-800: #424242;
    --gray-900: #212121;
    --text-primary: #212121;
    --text-secondary: #757575;
    --text-disabled: #9e9e9e;
    --success-color: #4caf50;
    --warning-color: #ff9800;
    --error-color: #f44336;
    --info-color: #2196f3;
    
    /* Material Design Elevation Shadows */
    --shadow-1: 0 1px 3px rgba(0,0,0,0.12), 0 1px 2px rgba(0,0,0,0.24);
    --shadow-2: 0 3px 6px rgba(0,0,0,0.16), 0 3px 6px rgba(0,0,0,0.23);
    --shadow-3: 0 10px 20px rgba(0,0,0,0.19), 0 6px 6px rgba(0,0,0,0.23);
    --shadow-4: 0 14px 28px rgba(0,0,0,0.25), 0 10px 10px rgba(0,0,0,0.22);
    --shadow-5: 0 19px 38px rgba(0,0,0,0.30), 0 15px 12px rgba(0,0,0,0.22);
    
    /* Transitions */
    --transition-standard: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-deceleration: all 0.4s cubic-bezier(0.0, 0, 0.2, 1);
    --transition-acceleration: all 0.3s cubic-bezier(0.4, 0, 1, 1);
    --transition-sharp: all 0.2s cubic-bezier(0.4, 0, 0.6, 1);
}

/* ===== RESET & BASE STYLES ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', sans-serif;
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--gray-100);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* ===== NAVIGATION ===== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: var(--surface-color);
    box-shadow: var(--shadow-2);
    z-index: 1000;
    transition: var(--transition-standard);
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 24px;
    height: 64px;
}

.nav-brand {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
    letter-spacing: -0.5px;
}

.nav-menu {
    display: flex;
    gap: 32px;
}

.nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition-standard);
    position: relative;
    padding: 8px 0;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 2px;
    background: var(--primary-color);
    transition: var(--transition-standard);
    border-radius: 2px 2px 0 0;
}

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

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

.mobile-menu-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--text-primary);
    padding: 8px;
    border-radius: 50%;
    transition: var(--transition-standard);
}

.mobile-menu-toggle:hover {
    background: var(--gray-100);
}

/* ===== HERO SECTION ===== */
.hero {
    padding: 140px 0 100px;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    color: white;
    position: relative;
    overflow: hidden;
    box-shadow: var(--shadow-3);
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at 20% 50%, rgba(255,255,255,0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(255,255,255,0.1) 0%, transparent 50%);
    opacity: 0.6;
}

.hero::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 100px;
    background: linear-gradient(to top, rgba(0,0,0,0.1), transparent);
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 900px;
    margin: 0 auto;
    text-align: center;
}

.profile-image-container {
    margin: 0 auto 2rem;
    width: 180px;
    height: 180px;
    border-radius: 50%;
    overflow: hidden;
    box-shadow: var(--shadow-4);
    border: 4px solid rgba(255, 255, 255, 0.3);
    animation: fadeInUp 0.8s ease-out;
}

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

.hero-title {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    animation: fadeInUp 0.8s ease-out 0.1s both;
    text-shadow: 0 2px 4px rgba(0,0,0,0.2);
    letter-spacing: -1px;
}

.hero-subtitle {
    font-size: 1.5rem;
    margin-bottom: 1.5rem;
    opacity: 0.95;
    animation: fadeInUp 0.8s ease-out 0.2s both;
    font-weight: 400;
}

.hero-description {
    font-size: 1.125rem;
    line-height: 1.8;
    margin-bottom: 2.5rem;
    opacity: 0.9;
    animation: fadeInUp 0.8s ease-out 0.4s both;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.highlight {
    color: #00fcff;
    font-weight: 600;
    text-shadow: 0 1px 3px rgba(0,0,0,0.4);
}

.hero-cta {
    display: flex;
    gap: 1rem;
    justify-content: center;
    margin-bottom: 4rem;
    animation: fadeInUp 0.8s ease-out 0.6s both;
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: 4rem;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.2);
    animation: fadeInUp 0.8s ease-out 0.8s both;
    margin-bottom: 2rem;
}

.stat {
    text-align: center;
    padding: 16px 24px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 12px;
    backdrop-filter: blur(10px);
    transition: var(--transition-standard);
}

.stat:hover {
    background: rgba(255, 255, 255, 0.15);
    transform: translateY(-4px);
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    text-shadow: 0 2px 4px rgba(0,0,0,0.2);
}

.stat-label {
    font-size: 0.875rem;
    opacity: 0.9;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    font-weight: 500;
}

.social-links {
    display: flex;
    justify-content: center;
    gap: 1rem;
    animation: fadeInUp 0.8s ease-out 1s both;
}

.social-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 10px 20px;
    background: rgba(255, 255, 255, 0.1);
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: 24px;
    color: white;
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition-standard);
    backdrop-filter: blur(10px);
}

.social-link:hover {
    background: rgba(255, 255, 255, 0.2);
    border-color: rgba(255, 255, 255, 0.5);
    transform: translateY(-2px);
    box-shadow: var(--shadow-2);
}

.social-link svg {
    width: 20px;
    height: 20px;
}

/* ===== BUTTONS ===== */
.btn {
    display: inline-block;
    padding: 12px 32px;
    border-radius: 4px;
    font-weight: 600;
    text-decoration: none;
    transition: var(--transition-standard);
    cursor: pointer;
    border: none;
    font-size: 1rem;
    letter-spacing: 0.5px;
    text-transform: uppercase;
    position: relative;
    overflow: hidden;
    box-shadow: var(--shadow-2);
}

.btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.btn:hover::before {
    width: 300px;
    height: 300px;
}

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

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-4);
}

.btn-primary:active {
    transform: translateY(0);
    box-shadow: var(--shadow-2);
}

.btn-secondary {
    background: transparent;
    color: white;
    border: 2px solid white;
    box-shadow: none;
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.1);
    box-shadow: var(--shadow-2);
}

.btn-secondary:active {
    transform: scale(0.98);
}

.btn-download {
    background: var(--primary-color);
    color: white;
    padding: 12px 24px;
    margin: 0.5rem;
    border-radius: 4px;
}

.btn-download:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-3);
}

.btn-download:active {
    transform: translateY(0);
    box-shadow: var(--shadow-1);
}

/* ===== SECTIONS ===== */
.section {
    padding: 80px 0;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 3rem;
    color: var(--text-primary);
    position: relative;
    letter-spacing: -0.5px;
}

.section-title::after {
    content: '';
    display: block;
    width: 60px;
    height: 4px;
    background: var(--primary-color);
    margin: 1.5rem auto 0;
    border-radius: 2px;
    box-shadow: 0 2px 4px rgba(25, 118, 210, 0.3);
}

/* ===== SUMMARY CARDS ===== */
.summary {
    background: var(--surface-color);
}

.summary-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
    max-width: 900px;
    margin: 0 auto;
}

.summary-card {
    padding: 32px 24px;
    background: var(--surface-color);
    border-radius: 8px;
    transition: var(--transition-standard);
    border: 1px solid var(--gray-200);
    box-shadow: var(--shadow-1);
    position: relative;
    overflow: hidden;
}

.summary-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), var(--primary-light));
    transform: scaleX(0);
    transform-origin: left;
    transition: var(--transition-standard);
}

.summary-card:hover::before {
    transform: scaleX(1);
}

.summary-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-3);
    border-color: var(--primary-color);
}

.card-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
    filter: drop-shadow(0 2px 4px rgba(0,0,0,0.1));
}

.summary-card h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
    color: var(--text-primary);
    letter-spacing: -0.25px;
}

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

/* ===== SKILLS SECTION ===== */
.skills {
    background: var(--gray-50);
}

.skills-filter,
.experience-filter {
    display: flex;
    justify-content: center;
    gap: 12px;
    margin-bottom: 3rem;
    flex-wrap: wrap;
}

.filter-btn {
    padding: 10px 24px;
    border: none;
    background: var(--surface-color);
    border-radius: 20px;
    cursor: pointer;
    transition: var(--transition-standard);
    font-weight: 500;
    color: var(--text-secondary);
    box-shadow: var(--shadow-1);
    letter-spacing: 0.25px;
}

.filter-btn:hover {
    background: var(--gray-100);
    box-shadow: var(--shadow-2);
    transform: translateY(-2px);
}

.filter-btn.active {
    background: var(--primary-color);
    color: white;
    box-shadow: var(--shadow-2);
}

.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 24px;
}

.skill-card {
    background: var(--surface-color);
    padding: 24px;
    border-radius: 8px;
    box-shadow: var(--shadow-1);
    transition: var(--transition-standard);
    border-left: 4px solid var(--primary-color);
}

.skill-card:hover {
    box-shadow: var(--shadow-3);
    transform: translateY(-4px);
}

.skill-card h3 {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--text-primary);
    letter-spacing: -0.25px;
}

.skill-bar {
    width: 100%;
    height: 8px;
    background: var(--gray-200);
    border-radius: 4px;
    margin-bottom: 0.75rem;
    overflow: hidden;
    box-shadow: inset 0 1px 3px rgba(0,0,0,0.1);
}

.skill-progress {
    height: 100%;
    background: linear-gradient(90deg, var(--primary-color), var(--primary-light));
    border-radius: 4px;
    transition: width 1s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 0 8px rgba(25, 118, 210, 0.4);
    position: relative;
}

.skill-progress::after {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    bottom: 0;
    width: 30%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.3));
}

.skill-card p {
    color: var(--text-secondary);
    font-size: 0.875rem;
    line-height: 1.5;
}

/* ===== TIMELINE ===== */
.experience {
    background: var(--surface-color);
}

.timeline {
    position: relative;
    padding: 2rem 0;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    width: 2px;
    height: 100%;
    background: var(--gray-300);
    box-shadow: 0 0 4px rgba(0,0,0,0.1);
}

.timeline-item {
    display: flex;
    margin-bottom: 3rem;
    position: relative;
    transition: var(--transition-standard);
}

.timeline-item:nth-child(odd) {
    flex-direction: row;
}

.timeline-item:nth-child(even) {
    flex-direction: row-reverse;
}

.timeline-marker {
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    width: 20px;
    height: 20px;
    background: var(--primary-color);
    border: 4px solid var(--surface-color);
    border-radius: 50%;
    box-shadow: var(--shadow-2);
    z-index: 1;
    transition: var(--transition-standard);
}

.timeline-marker.highlight {
    width: 30px;
    height: 30px;
    background: var(--accent-color);
    box-shadow: var(--shadow-3), 0 0 0 8px rgba(255, 111, 0, 0.1);
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% {
        box-shadow: var(--shadow-3), 0 0 0 8px rgba(255, 111, 0, 0.1);
    }
    50% {
        box-shadow: var(--shadow-3), 0 0 0 12px rgba(255, 111, 0, 0.2);
    }
}

.timeline-content {
    width: calc(50% - 40px);
    background: var(--surface-color);
    padding: 24px;
    border-radius: 8px;
    box-shadow: var(--shadow-2);
    transition: var(--transition-standard);
    border: 1px solid var(--gray-200);
    position: relative;
}

.timeline-content::before {
    content: '';
    position: absolute;
    top: 20px;
    width: 0;
    height: 0;
    border: 10px solid transparent;
}

.timeline-item:nth-child(odd) .timeline-content::before {
    right: -20px;
    border-left-color: var(--surface-color);
}

.timeline-item:nth-child(even) .timeline-content::before {
    left: -20px;
    border-right-color: var(--surface-color);
}

.timeline-item:hover .timeline-content {
    box-shadow: var(--shadow-4);
    transform: scale(1.02);
    border-color: var(--primary-light);
}

.timeline-item:hover .timeline-marker {
    transform: translateX(-50%) scale(1.2);
    box-shadow: var(--shadow-3);
}

.timeline-header {
    margin-bottom: 1rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--gray-200);
}

.timeline-header h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
    letter-spacing: -0.25px;
}

.company {
    display: block;
    color: var(--primary-color);
    font-weight: 600;
    margin-bottom: 0.25rem;
    font-size: 1rem;
}

.location {
    display: block;
    color: var(--text-secondary);
    font-size: 0.875rem;
    margin-bottom: 0.5rem;
}

.period {
    display: inline-block;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    color: white;
    padding: 6px 16px;
    border-radius: 16px;
    font-size: 0.813rem;
    font-weight: 500;
    margin-top: 0.5rem;
    box-shadow: var(--shadow-1);
    letter-spacing: 0.25px;
}

.timeline-body ul {
    list-style: none;
    padding-left: 0;
}

.timeline-body li {
    padding-left: 1.5rem;
    margin-bottom: 0.75rem;
    position: relative;
    color: var(--text-secondary);
    line-height: 1.7;
}

.timeline-body li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 8px;
    width: 6px;
    height: 6px;
    background: var(--primary-color);
    border-radius: 50%;
    box-shadow: 0 0 0 3px rgba(25, 118, 210, 0.1);
}

.timeline-body strong {
    color: var(--text-primary);
    font-weight: 600;
}

.timeline-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 1px solid var(--gray-200);
}

.tag {
    background: var(--gray-100);
    color: var(--text-secondary);
    padding: 4px 12px;
    border-radius: 12px;
    font-size: 0.75rem;
    font-weight: 500;
    transition: var(--transition-standard);
    border: 1px solid var(--gray-200);
}

.tag:hover {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
    transform: translateY(-2px);
    box-shadow: var(--shadow-1);
}

/* ===== EDUCATION ===== */
.education {
    background: var(--gray-50);
}

.education-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 24px;
}

.education-card {
    background: var(--surface-color);
    padding: 24px;
    border-radius: 8px;
    box-shadow: var(--shadow-1);
    transition: var(--transition-standard);
    border-top: 4px solid var(--primary-color);
    position: relative;
    overflow: hidden;
}

.education-card::before {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 100px;
    height: 100px;
    background: radial-gradient(circle, rgba(25, 118, 210, 0.05) 0%, transparent 70%);
}

.education-card.certification {
    border-top-color: var(--accent-color);
}

.education-card.certification::before {
    background: radial-gradient(circle, rgba(255, 111, 0, 0.05) 0%, transparent 70%);
}

.education-card.course {
    border-top-color: var(--secondary-color);
}

.education-card.course::before {
    background: radial-gradient(circle, rgba(38, 198, 218, 0.05) 0%, transparent 70%);
}

.education-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-3);
}

.education-icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    filter: drop-shadow(0 2px 4px rgba(0,0,0,0.1));
    position: relative;
    z-index: 1;
}

.education-card h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
    color: var(--text-primary);
    letter-spacing: -0.25px;
    position: relative;
    z-index: 1;
}

.institution {
    color: var(--primary-color);
    font-weight: 600;
    margin-bottom: 0.5rem;
    position: relative;
    z-index: 1;
}

.field,
.validation,
.thesis {
    color: var(--text-secondary);
    font-size: 0.875rem;
    margin-bottom: 0.5rem;
    line-height: 1.6;
    position: relative;
    z-index: 1;
}

.validation a {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition-standard);
}

.validation a:hover {
    color: var(--primary-dark);
    text-decoration: underline;
}

.year {
    display: inline-block;
    background: var(--gray-100);
    padding: 6px 12px;
    border-radius: 12px;
    font-size: 0.813rem;
    font-weight: 500;
    margin-top: 0.5rem;
    box-shadow: var(--shadow-1);
    position: relative;
    z-index: 1;
}

.grade {
    color: var(--success-color);
    font-weight: 600;
    margin-top: 0.5rem;
    position: relative;
    z-index: 1;
}

/* ===== LANGUAGES ===== */
.languages {
    background: var(--surface-color);
}

.languages-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 24px;
}

.language-card {
    background: var(--surface-color);
    padding: 32px 24px;
    border-radius: 8px;
    text-align: center;
    transition: var(--transition-standard);
    box-shadow: var(--shadow-1);
    border: 1px solid var(--gray-200);
}

.language-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-3);
    border-color: var(--primary-light);
}

.language-flag {
    font-size: 4rem;
    margin-bottom: 1rem;
    filter: drop-shadow(0 4px 8px rgba(0,0,0,0.1));
}

.language-card h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
    letter-spacing: -0.25px;
}

.proficiency {
    color: var(--text-secondary);
    margin-bottom: 1rem;
    font-size: 0.875rem;
}

.proficiency-bar {
    width: 100%;
    height: 8px;
    background: var(--gray-200);
    border-radius: 4px;
    overflow: hidden;
    margin-top: 1rem;
    box-shadow: inset 0 1px 3px rgba(0,0,0,0.1);
}

.proficiency-level {
    height: 100%;
    background: linear-gradient(90deg, var(--primary-color), var(--primary-light));
    border-radius: 4px;
    transition: width 1s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 0 8px rgba(25, 118, 210, 0.4);
    position: relative;
}

.proficiency-level::after {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    bottom: 0;
    width: 30%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.3));
}

/* ===== CONTACT ===== */
.contact {
    background: var(--gray-50);
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    max-width: 900px;
    margin: 0 auto;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: 16px;
    background: var(--surface-color);
    padding: 20px;
    border-radius: 8px;
    box-shadow: var(--shadow-1);
    transition: var(--transition-standard);
    border: 1px solid var(--gray-200);
}

.contact-item:hover {
    box-shadow: var(--shadow-2);
    transform: translateX(4px);
    border-color: var(--primary-light);
}

.contact-icon {
    font-size: 2rem;
    filter: drop-shadow(0 2px 4px rgba(0,0,0,0.1));
}

.contact-item h3 {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 0.25rem;
}

.contact-item a {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition-standard);
}

.contact-item a:hover {
    color: var(--primary-dark);
    text-decoration: underline;
}

.contact-item p {
    color: var(--text-primary);
    font-weight: 500;
}

.download-cv {
    background: var(--surface-color);
    padding: 32px 24px;
    border-radius: 8px;
    box-shadow: var(--shadow-2);
    border: 1px solid var(--gray-200);
    transition: var(--transition-standard);
}

.download-cv:hover {
    box-shadow: var(--shadow-3);
}

.download-cv h3 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
    letter-spacing: -0.5px;
}

.download-cv p {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
}

.download-buttons {
    display: flex;
    flex-direction: column;
}

/* ===== FOOTER ===== */
.footer {
    background: var(--gray-900);
    color: rgba(255, 255, 255, 0.7);
    padding: 32px 0;
    text-align: center;
    box-shadow: 0 -2px 8px rgba(0,0,0,0.1);
}

.footer p {
    color: rgba(255, 255, 255, 0.7);
}

.footer-note {
    margin-top: 0.5rem;
    opacity: 0.6;
    font-size: 0.875rem;
}

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

.fade-in {
    animation: fadeInUp 0.6s ease-out;
}

/* ===== RESPONSIVE DESIGN ===== */
@media (max-width: 768px) {
    .nav-menu {
        display: none;
    }

    .mobile-menu-toggle {
        display: block;
    }

    .hero {
        padding: 120px 0 60px;
    }

    .profile-image-container {
        width: 140px;
        height: 140px;
    }

    .hero-title {
        font-size: 2.5rem;
    }

    .hero-subtitle {
        font-size: 1.25rem;
    }

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

    .hero-cta .btn {
        width: 100%;
    }

    .hero-stats {
        flex-direction: column;
        gap: 1.5rem;
    }

    .timeline::before {
        left: 30px;
    }

    .timeline-item {
        flex-direction: column !important;
        padding-left: 70px;
    }

    .timeline-marker {
        left: 30px;
        transform: translateX(-50%);
    }

    .timeline-content {
        width: 100%;
    }

    .timeline-content::before {
        display: none;
    }

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

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

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

    .section {
        padding: 60px 0;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 2rem;
    }

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

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

    .container {
        padding: 0 16px;
    }

    .navbar .container {
        padding: 12px 16px;
    }
}

/* ===== UTILITY CLASSES ===== */
.hidden {
    display: none;
}

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

.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }