*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

:root {
    --color-primary: #4f46e5;
    --color-primary-light: #818cf8;
    --color-primary-dark: #3730a3;
    --color-secondary: #0ea5e9;
    --color-accent: #f59e0b;
    --color-text: #0f172a;
    --color-text-muted: #64748b;
    --color-text-light: #94a3b8;
    --color-bg: #ffffff;
    --color-bg-alt: #f8fafc;
    --color-bg-card: #ffffff;
    --color-border: #e2e8f0;
    --color-border-light: #f1f5f9;
    --shadow-sm: 0 1px 3px 0 rgb(0 0 0 / 0.1);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
    --radius-sm: 6px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-xl: 28px;
}

[data-theme="dark"] {
    --color-text: #f1f5f9;
    --color-text-muted: #94a3b8;
    --color-text-light: #64748b;
    --color-bg: #0f172a;
    --color-bg-alt: #1e293b;
    --color-bg-card: #1e293b;
    --color-border: #334155;
    --color-border-light: #334155;
    --shadow-sm: 0 1px 3px 0 rgb(0 0 0 / 0.3);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.3), 0 2px 4px -2px rgb(0 0 0 / 0.3);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.3), 0 4px 6px -4px rgb(0 0 0 / 0.3);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.3), 0 8px 10px -6px rgb(0 0 0 / 0.3);
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    line-height: 1.7;
    color: var(--color-text);
    background: var(--color-bg-alt);
    min-height: 100vh;
}

/* Navigation */
.navbar {
    background: var(--color-bg);
    box-shadow: var(--shadow-md);
    position: sticky;
    top: 0;
    z-index: 1000;
    padding: 1rem 2rem;
}

.navbar-container {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.navbar-brand {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--color-primary);
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.navbar-brand span {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

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

.navbar-menu a {
    color: var(--color-text);
    text-decoration: none;
    font-weight: 600;
    padding: 0.5rem 1rem;
    border-radius: var(--radius-sm);
    transition: all 0.3s ease;
}

.navbar-menu a:hover,
.navbar-menu a.active {
    color: var(--color-primary);
    background: var(--color-bg-alt);
}

/* Theme Toggle Button */
.theme-toggle {
    background: none;
    border: 2px solid var(--color-border);
    color: var(--color-text);
    cursor: pointer;
    padding: 0.5rem;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
}

.theme-toggle:hover {
    background: var(--color-bg-alt);
    border-color: var(--color-primary);
    color: var(--color-primary);
}

.theme-toggle svg {
    width: 20px;
    height: 20px;
}

.sun-icon { display: none; }
.moon-icon { display: block; }

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

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 1rem 2rem;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
}

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

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.2);
}

.btn-outline {
    background: transparent;
    color: white;
    border: 2px solid white;
}

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

/* Hero Section (Index) */
.hero {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 8rem 2rem 6rem;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -10%;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(255,255,255,0.1) 0%, transparent 70%);
    border-radius: 50%;
}

.hero::after {
    content: '';
    position: absolute;
    bottom: -30%;
    left: -5%;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(255,255,255,0.08) 0%, transparent 70%);
    border-radius: 50%;
}

.hero-content {
    position: relative;
    z-index: 1;
}

.hero-avatar {
    width: 150px;
    height: 150px;
    border-radius: 50%;
    background: linear-gradient(135deg, rgba(255,255,255,0.25) 0%, rgba(255,255,255,0.1) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 4rem;
    font-weight: 800;
    border: 5px solid rgba(255, 255, 255, 0.3);
    backdrop-filter: blur(10px);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
    margin: 0 auto 2rem;
}

.hero h1 {
    font-size: 3.5rem;
    font-weight: 800;
    margin-bottom: 1rem;
    letter-spacing: -0.03em;
}

.hero p {
    font-size: 1.5rem;
    opacity: 0.95;
    margin-bottom: 2rem;
    font-weight: 400;
}

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

/* Section (Common) */
.section {
    padding: 6rem 0;
}

.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-header h2 {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--color-text);
    margin-bottom: 1rem;
}

.section-header p {
    font-size: 1.1rem;
    color: var(--color-text-muted);
    max-width: 600px;
    margin: 0 auto;
}

/* Cards Grid (Index) */
.cards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2rem;
}

.card {
    background: var(--color-bg-card);
    border-radius: var(--radius-lg);
    padding: 2rem;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--color-border-light);
    transition: all 0.3s ease;
    display: flex;
    flex-direction: column;
}

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

.card-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    margin-bottom: 1.5rem;
}

.card h3 {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 0.75rem;
    color: var(--color-text);
}

.card p {
    color: var(--color-text-muted);
    line-height: 1.6;
    flex: 1;
}

.card-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--color-primary);
    text-decoration: none;
    font-weight: 600;
    margin-top: 1rem;
    transition: all 0.3s ease;
}

.card-link:hover {
    color: var(--color-primary-dark);
    gap: 0.75rem;
}

/* CV Layout */
.cv-container {
    max-width: 1000px;
    margin: 0 auto;
    padding: 2rem 1rem;
}

.cv {
    background: var(--color-bg);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
    overflow: hidden;
}

/* CV Header */
.cv-header {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 50%, #1e1b4b 100%);
    color: white;
    padding: 4rem 3rem;
    position: relative;
    overflow: hidden;
}

.cv-header::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -10%;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(255,255,255,0.1) 0%, transparent 70%);
    border-radius: 50%;
}

.cv-header::after {
    content: '';
    position: absolute;
    bottom: -30%;
    left: -5%;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(255,255,255,0.08) 0%, transparent 70%);
    border-radius: 50%;
}

.header-content {
    position: relative;
    z-index: 1;
    max-width: 700px;
    margin: 0 auto;
}

.profile-section {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 2rem;
    margin-bottom: 2rem;
}

.avatar {
    width: 140px;
    height: 140px;
    border-radius: 50%;
    background: linear-gradient(135deg, rgba(255,255,255,0.25) 0%, rgba(255,255,255,0.1) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 3.5rem;
    font-weight: 800;
    border: 5px solid rgba(255, 255, 255, 0.3);
    backdrop-filter: blur(10px);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
}

.header-info { text-align: left; }

.header-name {
    font-size: 2.75rem;
    font-weight: 800;
    letter-spacing: -0.03em;
    margin-bottom: 0.5rem;
    background: linear-gradient(135deg, #ffffff 0%, rgba(255,255,255,0.8) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.header-title {
    font-size: 1.35rem;
    font-weight: 500;
    opacity: 0.95;
    color: rgba(255, 255, 255, 0.9);
}

.header-badges {
    display: flex;
    gap: 0.75rem;
    margin-top: 1rem;
    flex-wrap: wrap;
}

.badge {
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(10px);
    padding: 0.4rem 1rem;
    border-radius: 50px;
    font-size: 0.8rem;
    font-weight: 500;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.header-contact {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 1.5rem;
    margin-top: 2rem;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    font-size: 0.9rem;
    opacity: 0.95;
    background: rgba(255, 255, 255, 0.1);
    padding: 0.75rem 1.25rem;
    border-radius: 50px;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.15);
    transition: all 0.3s ease;
}

.contact-item:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: translateY(-2px);
}

.contact-item svg { width: 18px; height: 18px; }
.contact-item a { color: white; text-decoration: none; transition: opacity 0.2s; }

.cv-content {
    padding: 3rem;
    background: var(--color-bg-alt);
}

.cv-section { margin-bottom: 3rem; }
.cv-section:last-child { margin-bottom: 0; }

.cv-section-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 2rem;
}

.section-icon {
    width: 56px;
    height: 56px;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-md);
}

.section-icon svg { width: 28px; height: 28px; color: white; }

.section-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-text);
    letter-spacing: -0.02em;
}

/* Experience */
.experience-item {
    background: var(--color-bg-card);
    border-radius: var(--radius-lg);
    padding: 1.75rem;
    margin-bottom: 1.5rem;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--color-border-light);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.experience-item::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 4px;
    background: linear-gradient(180deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
}

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

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

.experience-info { flex: 1; min-width: 250px; }
.experience-title { font-size: 1.2rem; font-weight: 700; color: var(--color-text); margin-bottom: 0.35rem; }
.experience-company { color: var(--color-primary); font-weight: 600; font-size: 1rem; }
.experience-location { display: flex; align-items: center; gap: 0.35rem; font-size: 0.875rem; color: var(--color-text-muted); margin-top: 0.25rem; }
.experience-location svg { width: 14px; height: 14px; }
.experience-date-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: linear-gradient(135deg, var(--color-primary-light) 0%, var(--color-primary) 100%);
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 50px;
    font-size: 0.8rem;
    font-weight: 600;
    white-space: nowrap;
}
.experience-date-badge svg { width: 14px; height: 14px; }
.experience-description { margin-top: 1rem; }
.experience-description ul { list-style: none; padding-left: 0; }
.experience-description li {
    position: relative;
    padding-left: 1.75rem;
    margin-bottom: 0.6rem;
    font-size: 0.95rem;
    color: var(--color-text-muted);
    line-height: 1.6;
}
.experience-description li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0.6rem;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
}

/* Education */
.education-grid { display: grid; gap: 1.25rem; }
.education-card {
    background: var(--color-bg-card);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--color-border-light);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}
.education-card::before {
    content: '';
    position: absolute;
    right: 0;
    top: 0;
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--color-primary-light) 0%, transparent 100%);
    opacity: 0.1;
    border-radius: 0 0 0 100%;
}
.education-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-md); }
.education-header { display: flex; justify-content: space-between; align-items: flex-start; gap: 1rem; margin-bottom: 0.5rem; flex-wrap: wrap; }
.education-school { font-size: 1.1rem; font-weight: 700; color: var(--color-text); }
.education-date { background: var(--color-bg-alt); color: var(--color-text-muted); padding: 0.35rem 0.85rem; border-radius: 50px; font-size: 0.8rem; font-weight: 600; }
.education-degree { color: var(--color-primary); font-weight: 600; font-size: 1rem; }

/* Skills */
.skills-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 1.5rem; }
.skill-category {
    background: var(--color-bg-card);
    border-radius: var(--radius-lg);
    padding: 1.75rem;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--color-border-light);
    transition: all 0.3s ease;
}
.skill-category:hover { transform: translateY(-3px); box-shadow: var(--shadow-md); }
.skill-category-header { display: flex; align-items: center; gap: 0.75rem; margin-bottom: 1.25rem; }
.skill-icon {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
}
.skill-icon svg { width: 20px; height: 20px; color: white; }
.skill-category-title { font-size: 1rem; font-weight: 700; color: var(--color-text); }
.skill-tags { display: flex; flex-wrap: wrap; gap: 0.6rem; }
.skill-tag {
    display: inline-block;
    background: var(--color-bg-alt);
    color: var(--color-text);
    padding: 0.5rem 1rem;
    border-radius: 50px;
    font-size: 0.85rem;
    font-weight: 600;
    border: 2px solid var(--color-border-light);
    transition: all 0.3s ease;
}
.skill-tag:hover { background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%); color: white; border-color: transparent; transform: scale(1.05); }

/* Languages */
.languages-container { display: flex; flex-wrap: wrap; gap: 1.5rem; }
.language-card {
    background: var(--color-bg-card);
    border-radius: var(--radius-lg);
    padding: 1.25rem 1.75rem;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--color-border-light);
    display: flex;
    align-items: center;
    gap: 1rem;
    transition: all 0.3s ease;
}
.language-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-md); }
.language-flag {
    width: 44px;
    height: 44px;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
}
.language-info { display: flex; flex-direction: column; }
.language-name { font-weight: 700; color: var(--color-text); font-size: 1rem; }
.language-level { color: var(--color-text-muted); font-size: 0.85rem; font-weight: 500; }

/* Interests */
.interests-grid { display: flex; flex-wrap: wrap; gap: 1rem; }
.interest-card {
    background: linear-gradient(135deg, var(--color-bg-card) 0%, var(--color-bg-alt) 100%);
    border-radius: var(--radius-lg);
    padding: 1rem 1.5rem;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--color-border-light);
    display: flex;
    align-items: center;
    gap: 0.75rem;
    transition: all 0.3s ease;
}
.interest-card:hover { transform: translateY(-3px) scale(1.02); box-shadow: var(--shadow-md); }
.interest-icon {
    width: 36px;
    height: 36px;
    background: linear-gradient(135deg, var(--color-accent) 0%, #f97316 100%);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
}
.interest-icon svg { width: 18px; height: 18px; color: white; }
.interest-name { font-weight: 600; color: var(--color-text); font-size: 0.95rem; }

/* Projects Page specific */
.page-header { text-align: center; margin-bottom: 4rem; }
.page-header h1 {
    font-size: 3rem;
    font-weight: 800;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 1rem;
}
.page-header p { font-size: 1.2rem; color: var(--color-text-muted); }

.project-section {
    background: var(--color-bg);
    border-radius: var(--radius-xl);
    padding: 3rem;
    margin-bottom: 3rem;
    box-shadow: var(--shadow-lg);
    scroll-margin-top: 100px;
}
.project-header { display: flex; align-items: center; gap: 1.5rem; margin-bottom: 2rem; flex-wrap: wrap; }
.project-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5rem;
    flex-shrink: 0;
}
.project-icon svg { width: 40px; height: 40px; color: white; }
.project-title h2 { font-size: 2rem; font-weight: 800; color: var(--color-text); margin-bottom: 0.5rem; }
.project-subtitle { font-size: 1.1rem; color: var(--color-text-muted); }
.project-badges { display: flex; gap: 0.75rem; flex-wrap: wrap; margin-bottom: 2rem; }
.badge-primary { background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%); color: white; border-color: transparent; }
.project-description { font-size: 1.05rem; color: var(--color-text-muted); line-height: 1.8; margin-bottom: 2rem; }
.project-features { display: grid; gap: 1.5rem; margin-bottom: 2rem; }
.feature-item {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    padding: 1.25rem;
    background: var(--color-bg-alt);
    border-radius: var(--radius-md);
    border-left: 4px solid var(--color-primary);
}
.feature-icon { width: 24px; height: 24px; color: var(--color-primary); flex-shrink: 0; margin-top: 0.1rem; }
.feature-content h4 { font-size: 1rem; font-weight: 700; color: var(--color-text); margin-bottom: 0.25rem; }
.feature-content p { font-size: 0.95rem; color: var(--color-text-muted); margin: 0; }
.tech-stack { display: flex; flex-wrap: wrap; gap: 0.75rem; margin-top: 2rem; padding-top: 2rem; border-top: 1px solid var(--color-border-light); }
.tech-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    background: var(--color-bg-alt);
    padding: 0.5rem 1rem;
    border-radius: var(--radius-sm);
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--color-text);
}
.tech-item::before { content: ''; width: 8px; height: 8px; border-radius: 50%; background: var(--color-secondary); }

/* Footer */
.footer {
    background: var(--color-text);
    color: white;
    padding: 3rem 2rem;
    text-align: center;
}
.footer p { opacity: 0.8; }
.footer-heart { color: #ef4444; animation: heartbeat 1.5s ease-in-out infinite; }

@keyframes heartbeat { 0%, 100% { transform: scale(1); } 50% { transform: scale(1.1); } }

/* Animations */
@keyframes fadeInUp { from { opacity: 0; transform: translateY(30px); } to { opacity: 1; transform: translateY(0); } }
@keyframes fadeIn { from { opacity: 0; transform: translateY(20px); } to { opacity: 1; transform: translateY(0); } }

.animated-up { animation: fadeInUp 0.6s ease-out; }
.animated-fade { animation: fadeIn 0.5s ease-out both; }

/* Responsive */
@media (max-width: 768px) {
    .navbar { padding: 1rem; }
    .navbar-menu { gap: 1rem; }
    .navbar-menu a { padding: 0.5rem; font-size: 0.9rem; }
    .hero h1 { font-size: 2.5rem; }
    .hero p { font-size: 1.1rem; }
    .cards-grid { grid-template-columns: 1fr; }
    .cv-header { padding: 3rem 2rem; }
    .profile-section { flex-direction: column; }
    .header-info { text-align: center; }
    .header-name { font-size: 2rem; }
    .header-badges { justify-content: center; }
    .cv-content { padding: 2rem 1.5rem; }
    .experience-header { flex-direction: column; }
    .skills-grid { grid-template-columns: 1fr; }
    .header-contact { flex-direction: column; gap: 0.75rem; }
    .contact-item { justify-content: center; }
    .page-header h1 { font-size: 2rem; }
    .project-section { padding: 2rem 1.5rem; }
    .project-header { flex-direction: column; text-align: center; }
    .project-title h2 { font-size: 1.5rem; }
}

/* Print Styles */
@media print {
    body { background: white; padding: 0; }
    .container, .cv-container { max-width: none; }
    .cv { box-shadow: none; border-radius: 0; }
    .cv-header { background: var(--color-primary) !important; -webkit-print-color-adjust: exact; print-color-adjust: exact; }
    .navbar { display: none; }
}

/* --- CV Roman Felden Styles --- */
*,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        

        

        

        .container {
            max-width: 1000px;
            margin: 0 auto;
        }

        .cv {
            background: var(--color-bg);
            border-radius: var(--radius-xl);
            box-shadow: var(--shadow-xl);
            overflow: hidden;
            animation: fadeInUp 0.6s ease-out;
        }

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

        /* Header Section */
        .header {
            background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 50%, #1e1b4b 100%);
            color: white;
            padding: 4rem 3rem;
            position: relative;
            overflow: hidden;
        }

        .header::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -10%;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(255,255,255,0.1) 0%, transparent 70%);
            border-radius: 50%;
        }

        .header::after {
            content: '';
            position: absolute;
            bottom: -30%;
            left: -5%;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(255,255,255,0.08) 0%, transparent 70%);
            border-radius: 50%;
        }

        .header-content {
            position: relative;
            z-index: 1;
            max-width: 700px;
            margin: 0 auto;
        }

        .profile-section {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 2rem;
            margin-bottom: 2rem;
        }

        .avatar {
            width: 140px;
            height: 140px;
            border-radius: 50%;
            background: linear-gradient(135deg, rgba(255,255,255,0.25) 0%, rgba(255,255,255,0.1) 100%);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 3.5rem;
            font-weight: 800;
            border: 5px solid rgba(255, 255, 255, 0.3);
            backdrop-filter: blur(10px);
            box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
            text-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
        }

        .header-info {
            text-align: left;
        }

        .header-name {
            font-size: 2.75rem;
            font-weight: 800;
            letter-spacing: -0.03em;
            margin-bottom: 0.5rem;
            background: linear-gradient(135deg, #ffffff 0%, rgba(255,255,255,0.8) 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .header-title {
            font-size: 1.35rem;
            font-weight: 500;
            opacity: 0.95;
            color: rgba(255, 255, 255, 0.9);
        }

        .header-badges {
            display: flex;
            gap: 0.75rem;
            margin-top: 1rem;
            flex-wrap: wrap;
        }

        .badge {
            background: rgba(255, 255, 255, 0.15);
            backdrop-filter: blur(10px);
            padding: 0.4rem 1rem;
            border-radius: 50px;
            font-size: 0.8rem;
            font-weight: 500;
            border: 1px solid rgba(255, 255, 255, 0.2);
        }

        .header-contact {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 1.5rem;
            margin-top: 2rem;
        }

        .contact-item {
            display: flex;
            align-items: center;
            gap: 0.6rem;
            font-size: 0.9rem;
            opacity: 0.95;
            background: rgba(255, 255, 255, 0.1);
            padding: 0.75rem 1.25rem;
            border-radius: 50px;
            backdrop-filter: blur(10px);
            border: 1px solid rgba(255, 255, 255, 0.15);
            transition: all 0.3s ease;
        }

        .contact-item:hover {
            background: rgba(255, 255, 255, 0.2);
            transform: translateY(-2px);
        }

        .contact-item svg {
            width: 18px;
            height: 18px;
        }

        .contact-item a {
            color: white;
            text-decoration: none;
            transition: opacity 0.2s;
        }

        /* Main Content */
        .content {
            padding: 3rem;
            background: var(--color-bg-alt);
        }

        .section {
            margin-bottom: 3rem;
            animation: fadeIn 0.5s ease-out;
            animation-fill-mode: both;
        }

        .section:nth-child(1) { animation-delay: 0.1s; }
        .section:nth-child(2) { animation-delay: 0.2s; }
        .section:nth-child(3) { animation-delay: 0.3s; }
        .section:nth-child(4) { animation-delay: 0.4s; }
        .section:nth-child(5) { animation-delay: 0.5s; }

        @keyframes fadeIn {
            from { opacity: 0; transform: translateY(20px); }
            to { opacity: 1; transform: translateY(0); }
        }

        .section:last-child {
            margin-bottom: 0;
        }

        .section-header {
            display: flex;
            align-items: center;
            gap: 1rem;
            margin-bottom: 2rem;
        }

        .section-icon {
            width: 56px;
            height: 56px;
            background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
            border-radius: var(--radius-md);
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: var(--shadow-md);
        }

        .section-icon svg {
            width: 28px;
            height: 28px;
            color: white;
        }

        .section-title {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--color-text);
            letter-spacing: -0.02em;
        }

        /* Experience Items */
        .experience-item {
            background: var(--color-bg-card);
            border-radius: var(--radius-lg);
            padding: 1.75rem;
            margin-bottom: 1.5rem;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--color-border-light);
            transition: all 0.3s ease;
            position: relative;
            overflow: hidden;
        }

        .experience-item::before {
            content: '';
            position: absolute;
            left: 0;
            top: 0;
            bottom: 0;
            width: 4px;
            background: linear-gradient(180deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
        }

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

        .experience-item:last-child {
            margin-bottom: 0;
        }

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

        .experience-info {
            flex: 1;
            min-width: 250px;
        }

        .experience-title {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--color-text);
            margin-bottom: 0.35rem;
        }

        .experience-company {
            color: var(--color-primary);
            font-weight: 600;
            font-size: 1rem;
        }

        .experience-location {
            display: flex;
            align-items: center;
            gap: 0.35rem;
            font-size: 0.875rem;
            color: var(--color-text-muted);
            margin-top: 0.25rem;
        }

        .experience-location svg {
            width: 14px;
            height: 14px;
        }

        .experience-date-badge {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            background: linear-gradient(135deg, var(--color-primary-light) 0%, var(--color-primary) 100%);
            color: white;
            padding: 0.5rem 1rem;
            border-radius: 50px;
            font-size: 0.8rem;
            font-weight: 600;
            white-space: nowrap;
        }

        .experience-date-badge svg {
            width: 14px;
            height: 14px;
        }

        .experience-description {
            margin-top: 1rem;
        }

        .experience-description ul {
            list-style: none;
            padding-left: 0;
        }

        .experience-description li {
            position: relative;
            padding-left: 1.75rem;
            margin-bottom: 0.6rem;
            font-size: 0.95rem;
            color: var(--color-text-muted);
            line-height: 1.6;
        }

        .experience-description li::before {
            content: '';
            position: absolute;
            left: 0;
            top: 0.6rem;
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
        }

        /* Education */
        .education-grid {
            display: grid;
            gap: 1.25rem;
        }

        .education-card {
            background: var(--color-bg-card);
            border-radius: var(--radius-lg);
            padding: 1.5rem;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--color-border-light);
            transition: all 0.3s ease;
            position: relative;
            overflow: hidden;
        }

        .education-card::before {
            content: '';
            position: absolute;
            right: 0;
            top: 0;
            width: 80px;
            height: 80px;
            background: linear-gradient(135deg, var(--color-primary-light) 0%, transparent 100%);
            opacity: 0.1;
            border-radius: 0 0 0 100%;
        }

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

        .education-header {
            display: flex;
            justify-content: space-between;
            align-items: flex-start;
            gap: 1rem;
            margin-bottom: 0.5rem;
            flex-wrap: wrap;
        }

        .education-school {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--color-text);
        }

        .education-date {
            background: var(--color-bg-alt);
            color: var(--color-text-muted);
            padding: 0.35rem 0.85rem;
            border-radius: 50px;
            font-size: 0.8rem;
            font-weight: 600;
        }

        .education-degree {
            color: var(--color-primary);
            font-weight: 600;
            font-size: 1rem;
        }

        /* Skills */
        .skills-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 1.5rem;
        }

        .skill-category {
            background: var(--color-bg-card);
            border-radius: var(--radius-lg);
            padding: 1.75rem;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--color-border-light);
            transition: all 0.3s ease;
        }

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

        .skill-category-header {
            display: flex;
            align-items: center;
            gap: 0.75rem;
            margin-bottom: 1.25rem;
        }

        .skill-icon {
            width: 40px;
            height: 40px;
            background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .skill-icon svg {
            width: 20px;
            height: 20px;
            color: white;
        }

        .skill-category-title {
            font-size: 1rem;
            font-weight: 700;
            color: var(--color-text);
        }

        .skill-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 0.6rem;
        }

        .skill-tag {
            display: inline-block;
            background: var(--color-bg-alt);
            color: var(--color-text);
            padding: 0.5rem 1rem;
            border-radius: 50px;
            font-size: 0.85rem;
            font-weight: 600;
            border: 2px solid var(--color-border-light);
            transition: all 0.3s ease;
        }

        .skill-tag:hover {
            background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
            color: white;
            border-color: transparent;
            transform: scale(1.05);
        }

        /* Languages */
        .languages-container {
            display: flex;
            flex-wrap: wrap;
            gap: 1.5rem;
        }

        .language-card {
            background: var(--color-bg-card);
            border-radius: var(--radius-lg);
            padding: 1.25rem 1.75rem;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--color-border-light);
            display: flex;
            align-items: center;
            gap: 1rem;
            transition: all 0.3s ease;
        }

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

        .language-flag {
            width: 44px;
            height: 44px;
            background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
        }

        .language-info {
            display: flex;
            flex-direction: column;
        }

        .language-name {
            font-weight: 700;
            color: var(--color-text);
            font-size: 1rem;
        }

        .language-level {
            color: var(--color-text-muted);
            font-size: 0.85rem;
            font-weight: 500;
        }

        /* Interests */
        .interests-grid {
            display: flex;
            flex-wrap: wrap;
            gap: 1rem;
        }

        .interest-card {
            background: linear-gradient(135deg, var(--color-bg-card) 0%, var(--color-bg-alt) 100%);
            border-radius: var(--radius-lg);
            padding: 1rem 1.5rem;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--color-border-light);
            display: flex;
            align-items: center;
            gap: 0.75rem;
            transition: all 0.3s ease;
        }

        .interest-card:hover {
            transform: translateY(-3px) scale(1.02);
            box-shadow: var(--shadow-md);
        }

        .interest-icon {
            width: 36px;
            height: 36px;
            background: linear-gradient(135deg, var(--color-accent) 0%, #f97316 100%);
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .interest-icon svg {
            width: 18px;
            height: 18px;
            color: white;
        }

        .interest-name {
            font-weight: 600;
            color: var(--color-text);
            font-size: 0.95rem;
        }

        /* Footer */
        .footer {
            text-align: center;
            padding: 2rem 3rem;
            background: linear-gradient(135deg, var(--color-bg-alt) 0%, var(--color-border-light) 100%);
            border-top: 1px solid var(--color-border);
        }

        .footer-text {
            font-size: 0.9rem;
            color: var(--color-text-muted);
            font-weight: 500;
        }

        .footer-heart {
            color: #ef4444;
            animation: heartbeat 1.5s ease-in-out infinite;
        }

        @keyframes heartbeat {
            0%, 100% { transform: scale(1); }
            50% { transform: scale(1.1); }
        }

        /* Print Styles */
        @media print {
            

            .container {
                max-width: none;
            }

            .cv {
                box-shadow: none;
                border-radius: 0;
            }

            .header {
                background: var(--color-primary) !important;
                -webkit-print-color-adjust: exact;
                print-color-adjust: exact;
            }

            .experience-item:hover,
            .education-card:hover,
            .skill-category:hover,
            .language-card:hover,
            .interest-card:hover {
                transform: none !important;
            }

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

        /* Responsive */
        @media (max-width: 768px) {
            

            .header {
                padding: 3rem 2rem;
            }

            .profile-section {
                flex-direction: column;
            }

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

            .header-name {
                font-size: 2rem;
            }

            .header-title {
                font-size: 1.1rem;
            }

            .header-badges {
                justify-content: center;
            }

            .content {
                padding: 2rem 1.5rem;
            }

            .experience-header {
                flex-direction: column;
            }

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

            .header-contact {
                flex-direction: column;
                gap: 0.75rem;
            }

            .contact-item {
                justify-content: center;
            }
        }

/* --- Projets Styles --- */
*,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        

        

        

        /* Navigation */
        .navbar {
            background: var(--color-bg);
            box-shadow: var(--shadow-md);
            position: sticky;
            top: 0;
            z-index: 1000;
            padding: 1rem 2rem;
        }

        .navbar-container {
            max-width: 1200px;
            margin: 0 auto;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .navbar-brand {
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--color-primary);
            text-decoration: none;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }

        .navbar-brand span {
            background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .navbar-menu {
            display: flex;
            gap: 2rem;
            list-style: none;
        }

        .navbar-menu a {
            color: var(--color-text);
            text-decoration: none;
            font-weight: 600;
            padding: 0.5rem 1rem;
            border-radius: var(--radius-sm);
            transition: all 0.3s ease;
        }

        .navbar-menu a:hover,
        .navbar-menu a.active {
            color: var(--color-primary);
            background: var(--color-bg-alt);
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 3rem 2rem;
        }

        /* Header */
        .page-header {
            text-align: center;
            margin-bottom: 4rem;
        }

        .page-header h1 {
            font-size: 3rem;
            font-weight: 800;
            background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            margin-bottom: 1rem;
        }

        .page-header p {
            font-size: 1.2rem;
            color: var(--color-text-muted);
        }

        /* Project Section */
        .project-section {
            background: var(--color-bg);
            border-radius: var(--radius-xl);
            padding: 3rem;
            margin-bottom: 3rem;
            box-shadow: var(--shadow-lg);
            scroll-margin-top: 100px;
        }

        .project-section:last-child {
            margin-bottom: 0;
        }

        .project-header {
            display: flex;
            align-items: center;
            gap: 1.5rem;
            margin-bottom: 2rem;
            flex-wrap: wrap;
        }

        .project-icon {
            width: 80px;
            height: 80px;
            background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
            border-radius: var(--radius-lg);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 2.5rem;
            flex-shrink: 0;
        }

        .project-icon svg {
            width: 40px;
            height: 40px;
            color: white;
        }

        .project-title h2 {
            font-size: 2rem;
            font-weight: 800;
            color: var(--color-text);
            margin-bottom: 0.5rem;
        }

        .project-subtitle {
            font-size: 1.1rem;
            color: var(--color-text-muted);
        }

        .project-badges {
            display: flex;
            gap: 0.75rem;
            flex-wrap: wrap;
            margin-bottom: 2rem;
        }

        .badge {
            display: inline-block;
            background: var(--color-bg-alt);
            color: var(--color-text);
            padding: 0.5rem 1rem;
            border-radius: 50px;
            font-size: 0.85rem;
            font-weight: 600;
            border: 2px solid var(--color-border-light);
        }

        .badge-primary {
            background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
            color: white;
            border-color: transparent;
        }

        .project-description {
            font-size: 1.05rem;
            color: var(--color-text-muted);
            line-height: 1.8;
            margin-bottom: 2rem;
        }

        .project-features {
            display: grid;
            gap: 1.5rem;
            margin-bottom: 2rem;
        }

        .feature-item {
            display: flex;
            align-items: flex-start;
            gap: 1rem;
            padding: 1.25rem;
            background: var(--color-bg-alt);
            border-radius: var(--radius-md);
            border-left: 4px solid var(--color-primary);
        }

        .feature-icon {
            width: 24px;
            height: 24px;
            color: var(--color-primary);
            flex-shrink: 0;
            margin-top: 0.1rem;
        }

        .feature-content h4 {
            font-size: 1rem;
            font-weight: 700;
            color: var(--color-text);
            margin-bottom: 0.25rem;
        }

        .feature-content p {
            font-size: 0.95rem;
            color: var(--color-text-muted);
            margin: 0;
        }

        .tech-stack {
            display: flex;
            flex-wrap: wrap;
            gap: 0.75rem;
            margin-top: 2rem;
            padding-top: 2rem;
            border-top: 1px solid var(--color-border-light);
        }

        .tech-item {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            background: var(--color-bg-alt);
            padding: 0.5rem 1rem;
            border-radius: var(--radius-sm);
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--color-text);
        }

        .tech-item::before {
            content: '';
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--color-secondary);
        }

        /* Footer */
        .footer {
            background: var(--color-text);
            color: white;
            padding: 3rem 2rem;
            text-align: center;
            margin-top: 4rem;
        }

        .footer p {
            opacity: 0.8;
        }

        .footer-heart {
            color: #ef4444;
            animation: heartbeat 1.5s ease-in-out infinite;
        }

        @keyframes heartbeat {
            0%, 100% { transform: scale(1); }
            50% { transform: scale(1.1); }
        }

        /* Responsive */
        @media (max-width: 768px) {
            .navbar-menu {
                gap: 1rem;
            }

            .navbar-menu a {
                padding: 0.5rem;
                font-size: 0.9rem;
            }

            .page-header h1 {
                font-size: 2rem;
            }

            .project-section {
                padding: 2rem 1.5rem;
            }

            .project-header {
                flex-direction: column;
                text-align: center;
            }

            .project-title h2 {
                font-size: 1.5rem;
            }
        }