/* CSS Variables for easy theming */
:root {
    --primary-color: #3b82f6;
    --secondary-color: #1e40af;
    --accent-color: #06b6d4;
    --bg-dark: #0f172a;
    --bg-darker: #020617;
    --bg-card: #1e293b;
    --text-primary: #f1f5f9;
    --text-secondary: #cbd5e1;
    --border-color: #334155;
    --shadow: 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 / 0.3), 0 4px 6px -4px rgb(0 0 0 / 0.3);
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* General styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', 'Segoe UI', 'Helvetica Neue', Arial, sans-serif;
    color: var(--text-primary);
    background: linear-gradient(135deg, var(--bg-darker) 0%, var(--bg-dark) 100%);
    min-height: 100vh;
    line-height: 1.8;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    font-size: 16px;
}

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

/* Header styles */
header {
    background: var(--bg-card);
    border-radius: 16px;
    padding: 20px;
    margin-bottom: 30px;
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--border-color);
    position: relative;
    z-index: 100;
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 20px;
    padding-bottom: 20px;
    margin-bottom: 20px;
    border-bottom: 1px solid var(--border-color);
}

nav ul {
    list-style: none;
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    align-items: center;
}

nav ul li {
    display: inline-block;
}

nav ul li a {
    color: var(--text-secondary);
    text-decoration: none;
    padding: 10px 16px;
    border-radius: 8px;
    transition: var(--transition);
    font-weight: 500;
    font-size: 0.95rem;
    position: relative;
    display: inline-block;
}

nav ul li a::after {
    content: '';
    position: absolute;
    bottom: 4px;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 2px;
    background: var(--primary-color);
    transition: width 0.3s ease;
}

nav ul li a:hover {
    color: var(--primary-color);
    background-color: rgba(59, 130, 246, 0.08);
}

nav ul li a:hover::after {
    width: 70%;
}

nav ul li a.active {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    box-shadow: 0 4px 12px rgba(59, 130, 246, 0.3);
}

nav ul li a.active::after {
    display: none;
}

#language-switcher {
    display: flex;
    gap: 8px;
}

#language-switcher button {
    background: transparent;
    color: var(--text-secondary);
    border: 2px solid var(--border-color);
    padding: 8px 16px;
    cursor: pointer;
    font-size: 14px;
    font-weight: 600;
    border-radius: 8px;
    transition: var(--transition);
    font-family: inherit;
}

#language-switcher button:hover {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
    transform: translateY(-2px);
    box-shadow: var(--shadow);
}

#language-switcher button:hover {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
    transform: translateY(-2px);
    box-shadow: var(--shadow);
}

/* Profile Container */
.profile-container {
    text-align: center;
    padding: 40px 20px;
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.1), rgba(6, 182, 212, 0.1));
    border-radius: 16px;
    border: 1px solid var(--border-color);
    margin-top: 20px;
}

.profil-photo {
    width: 180px;
    height: 180px;
    border-radius: 50%;
    display: block;
    margin: 0 auto 24px;
    border: 4px solid var(--primary-color);
    box-shadow: var(--shadow-lg);
    transition: var(--transition);
    object-fit: cover;
}

.profil-photo:hover {
    transform: scale(1.05);
    box-shadow: 0 20px 25px -5px rgb(0 0 0 / 0.3), 0 8px 10px -6px rgb(0 0 0 / 0.3);
}

h1 {
    font-size: clamp(2rem, 5vw, 3rem);
    margin: 16px 0;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-weight: 800;
    letter-spacing: -0.02em;
}

.profile-container p {
    font-size: clamp(1rem, 2vw, 1.2rem);
    margin: 12px 0;
    color: var(--text-secondary);
}

.profile-container p:first-of-type {
    font-size: clamp(1.1rem, 2.5vw, 1.4rem);
    color: var(--text-primary);
    font-weight: 600;
}

.profile-container a {
    color: var(--primary-color);
    text-decoration: none;
    transition: var(--transition);
    font-weight: 500;
}

.profile-container a:hover {
    color: var(--accent-color);
    text-decoration: underline;
}

/* Section styles */
section {
    background: var(--bg-card);
    border-radius: 16px;
    padding: 48px;
    margin: 30px 0;
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--border-color);
    transition: var(--transition);
}

section:hover {
    transform: translateY(-4px);
    box-shadow: 0 20px 25px -5px rgb(0 0 0 / 0.3), 0 8px 10px -6px rgb(0 0 0 / 0.3);
}

/* Entry containers for better organization */
.entry {
    margin-bottom: 40px;
    padding-bottom: 32px;
    border-bottom: 1px solid rgba(59, 130, 246, 0.15);
}

.entry:last-child {
    border-bottom: none;
    margin-bottom: 0;
    padding-bottom: 0;
}

/* Date and location styling */
.meta-info {
    color: var(--text-secondary);
    font-size: 0.95rem;
    font-style: italic;
    opacity: 0.85;
    margin-top: 4px;
}

/* Blockquote and special text */
blockquote {
    border-left: 4px solid var(--primary-color);
    padding-left: 20px;
    margin: 20px 0;
    font-style: italic;
    color: var(--text-secondary);
}

/* Code and technical terms */
code {
    background: rgba(59, 130, 246, 0.1);
    padding: 2px 6px;
    border-radius: 4px;
    font-size: 0.9em;
    font-family: 'Courier New', monospace;
    color: var(--accent-color);
}

/* Emphasis on numbers and stats */
.number {
    font-weight: 700;
    color: var(--primary-color);
    font-size: 1.1em;
}

/* Better text selection */
::selection {
    background: var(--primary-color);
    color: white;
}

::-moz-selection {
    background: var(--primary-color);
    color: white;
}

h2 {
    font-size: clamp(1.75rem, 4vw, 2.25rem);
    color: var(--text-primary);
    border-bottom: 3px solid var(--primary-color);
    padding-bottom: 16px;
    margin-bottom: 36px;
    margin-top: 0;
    font-weight: 700;
    position: relative;
    display: inline-block;
    letter-spacing: -0.01em;
}

h2::after {
    content: '';
    position: absolute;
    bottom: -3px;
    left: 0;
    width: 60%;
    height: 3px;
    background: var(--accent-color);
    animation: slideIn 0.6s ease-out;
}

@keyframes slideIn {
    from {
        width: 0;
    }
    to {
        width: 60%;
    }
}

h3 {
    font-size: clamp(1.15rem, 2.5vw, 1.45rem);
    margin: 32px 0 16px;
    color: var(--text-primary);
    font-weight: 600;
    line-height: 1.4;
    letter-spacing: -0.01em;
}

/* Style for education/experience entries */
section h3 {
    position: relative;
    padding-left: 0;
    margin-bottom: 8px;
}

/* Remove dash from h3 and improve structure */
section h3:not(:first-of-type) {
    margin-top: 40px;
    padding-top: 24px;
    border-top: 1px solid rgba(59, 130, 246, 0.2);
}

p {
    font-size: clamp(0.975rem, 2vw, 1.075rem);
    margin: 10px 0;
    color: var(--text-secondary);
    line-height: 1.8;
    max-width: 90ch;
}

/* Style for institution/company names */
p strong {
    color: var(--text-primary);
    font-weight: 600;
    font-size: 1.05em;
    display: block;
    margin-bottom: 4px;
}

/* Style for dates and locations */
section p:has(strong) {
    margin-bottom: 16px;
}

/* Better spacing for paragraphs after strong elements */
section p + p:not(:has(strong)) {
    margin-top: 12px;
    padding-left: 0;
    font-size: 1rem;
}

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

/* Lists */
ul, ol {
    margin: 20px 0;
    padding-left: 28px;
}

li {
    margin: 12px 0;
    color: var(--text-secondary);
    line-height: 1.8;
    font-size: 1.05rem;
}

li::marker {
    color: var(--primary-color);
}

/* Links */
a {
    color: var(--primary-color);
    transition: var(--transition);
    text-decoration: none;
    border-bottom: 1px solid transparent;
}

a:hover {
    color: var(--accent-color);
    border-bottom-color: var(--accent-color);
}

/* Footer styles */
footer {
    text-align: center;
    padding: 24px 0;
    margin-top: 60px;
    border-top: 2px solid var(--border-color);
    font-size: clamp(0.9rem, 1.5vw, 1rem);
    color: var(--text-secondary);
    background: var(--bg-card);
    border-radius: 16px;
    box-shadow: var(--shadow);
}

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

section {
    animation: fadeIn 0.6s ease-out;
}

/* Scrollbar styling */
::-webkit-scrollbar {
    width: 12px;
}

::-webkit-scrollbar-track {
    background: var(--bg-dark);
}

::-webkit-scrollbar-thumb {
    background: var(--primary-color);
    border-radius: 6px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--secondary-color);
}

/* Responsive design adjustments */
@media (max-width: 768px) {
    header {
        position: relative;
        top: 0;
    }
    
    nav {
        flex-direction: column;
        align-items: flex-start;
    }
    
    nav ul {
        width: 100%;
        justify-content: center;
    }

    .profile-container {
        padding: 30px 15px;
    }

    .profil-photo {
        width: 140px;
        height: 140px;
    }

    section {
        padding: 32px 24px;
        margin: 20px 0;
    }

    h2 {
        font-size: clamp(1.5rem, 3.5vw, 2rem);
    }

    h2::after {
        width: 80%;
    }

    h3 {
        font-size: clamp(1.1rem, 2.2vw, 1.35rem);
    }

    p {
        font-size: 1rem;
    }
}

@media (max-width: 480px) {
    body {
        font-size: 15px;
    }

    .container {
        padding: 10px;
    }

    header {
        padding: 15px;
    }

    nav ul li a {
        padding: 8px 12px;
        font-size: 0.85rem;
    }

    .profil-photo {
        width: 120px;
        height: 120px;
    }

    section {
        padding: 24px 20px;
    }

    h1 {
        font-size: clamp(1.5rem, 4vw, 2rem);
    }

    h2 {
        font-size: clamp(1.35rem, 3vw, 1.75rem);
        margin-bottom: 28px;
    }

    h3 {
        font-size: clamp(1rem, 2vw, 1.25rem);
        margin-top: 28px;
    }

    p {
        font-size: 0.95rem;
        line-height: 1.7;
    }

    li {
        font-size: 0.95rem;
    }
}