@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@300;400;600;700&display=swap');

:root {
    --primary-color: #6e45e2;
    --secondary-color: #88d3ce;
    --background-color: #f0f2f5;
    --text-color: #333;
    --card-background: #ffffff;
    --shadow-color: rgba(0, 0, 0, 0.1);
}

body {
    font-family: 'Poppins', sans-serif;
    line-height: 1.6;
    margin: 0;
    padding: 0;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: var(--text-color);
    overflow-x: hidden;
}

header {
    background: transparent;
    padding: 1rem 0;
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    transition: background 0.3s ease;
}

header.scrolled {
    background: rgba(255, 255, 255, 0.9);
    box-shadow: 0 2px 10px var(--shadow-color);
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1200px;
    margin: auto;
    padding: 0 2rem;
}

.header-profile {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.header-pic {
    height: 40px;
    width: 40px;
    border-radius: 50%;
    object-fit: cover;
}

.header-profile span {
    font-size: 1.2rem;
    font-weight: 600;
    color: #fff;
}

header.scrolled .header-profile span {
    color: var(--primary-color);
}

.nav-right {
    display: flex;
    align-items: center;
}

.social-icons {
    margin-right: 1.5rem;
}

.social-icons a {
    color: #fff;
    font-size: 1.2rem;
    margin: 0 0.5rem;
    transition: color 0.3s ease;
}

.social-icons a:hover {
    color: var(--secondary-color);
}

header.scrolled .social-icons a {
    color: var(--primary-color);
}

header.scrolled .social-icons a:hover {
    color: var(--secondary-color);
}

.language-selector button {
    background: transparent;
    color: #fff;
    border: 1px solid #fff;
    padding: 0.5rem 1rem;
    cursor: pointer;
    margin-left: 0.5rem;
    border-radius: 20px;
    font-weight: 600;
    transition: all 0.3s ease;
}

header.scrolled .language-selector button {
    color: var(--primary-color);
    border-color: var(--primary-color);
}

.language-selector button:hover {
    background: #fff;
    color: var(--primary-color);
}

main {
    padding-top: 80px;
    display: flex;
    flex-direction: column;
    align-items: center;
}

section {
    background: var(--card-background);
    margin: 1.5rem;
    padding: 2rem;
    border-radius: 15px;
    box-shadow: 0 10px 30px var(--shadow-color);
    width: 90%;
    max-width: 800px;
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

section.visible {
    opacity: 1;
    transform: translateY(0);
}

#intro {
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
}

#profile-pic {
    width: 150px;
    height: 150px;
    border-radius: 50%;
    object-fit: cover;
    margin-bottom: 1.5rem;
    border: 5px solid #fff;
    box-shadow: 0 5px 15px var(--shadow-color);
}

h1 {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

h2 {
    font-size: 2rem;
    font-weight: 600;
    color: var(--primary-color);
    border-bottom: 3px solid var(--secondary-color);
    padding-bottom: 0.5rem;
    margin-bottom: 1.5rem;
}

p {
    white-space: pre-wrap;
    color: #555;
}

.certifications-container {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    justify-content: center;
}

.certification-button {
    background-color: var(--primary-color);
    color: #fff;
    padding: 0.8rem 1.5rem;
    border-radius: 25px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    display: inline-block;
    text-align: center;
}

.certification-button:hover {
    background-color: var(--secondary-color);
    transform: translateY(-3px);
    box-shadow: 0 4px 10px var(--shadow-color);
}

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

.timeline::before {
    content: '';
    position: absolute;
    top: 0;
    left: 20px;
    height: 100%;
    width: 4px;
    background: var(--primary-color);
    opacity: 0.3;
}

.timeline-item {
    position: relative;
    padding-left: 50px;
    margin-bottom: 2rem;
}

.timeline-dot {
    position: absolute;
    left: 11px;
    top: 5px;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: var(--secondary-color);
    border: 3px solid var(--primary-color);
}

.timeline-date {
    font-weight: 600;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.timeline-content h3 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.timeline-location {
    font-style: italic;
    color: #777;
    margin-bottom: 0.5rem;
}

footer {
    text-align: center;
    padding: 2rem 0;
    color: #fff;
    font-weight: 300;
}

.dark-mode-button {
    background: transparent;
    color: #fff;
    border: 1px solid #fff;
    padding: 0.5rem 1rem;
    cursor: pointer;
    margin-right: 1.5rem;
    border-radius: 20px;
    font-weight: 600;
    transition: all 0.3s ease;
}

header.scrolled .dark-mode-button {
    color: var(--primary-color);
    border-color: var(--primary-color);
}

.dark-mode-button:hover {
    background: #fff;
    color: var(--primary-color);
}


/* Dark Mode Styles */
body.dark-mode {
    --primary-color: #9b59b6;
    --secondary-color: #3498db;
    --background-color: #2c3e50;
    --text-color: #ecf0f1;
    --card-background: #34495e;
    --shadow-color: rgba(0, 0, 0, 0.4);
}

body.dark-mode header.scrolled {
    background: rgba(44, 62, 80, 0.9);
}

body.dark-mode .header-profile span {
    color: #ecf0f1;
}

body.dark-mode header.scrolled .header-profile span {
    color: var(--primary-color);
}

body.dark-mode .social-icons a {
    color: #ecf0f1;
}

body.dark-mode header.scrolled .social-icons a {
    color: var(--primary-color);
}

body.dark-mode .language-selector button {
    color: #ecf0f1;
    border-color: #ecf0f1;
}

body.dark-mode header.scrolled .language-selector button {
    color: var(--primary-color);
    border-color: var(--primary-color);
}

body.dark-mode .language-selector button:hover {
    background: #ecf0f1;
    color: var(--primary-color);
}

body.dark-mode h1 {
    color: var(--primary-color);
}

body.dark-mode h2 {
    color: var(--primary-color);
    border-bottom-color: var(--secondary-color);
}

body.dark-mode p {
    color: #bdc3c7;
}

body.dark-mode .timeline::before {
    background: var(--primary-color);
}

body.dark-mode .timeline-dot {
    background: var(--secondary-color);
    border-color: var(--primary-color);
}

body.dark-mode .timeline-date {
    color: var(--primary-color);
}

body.dark-mode .timeline-location {
    color: #95a5a6;
}

body.dark-mode footer {
    color: #ecf0f1;
}

body.dark-mode .dark-mode-button {
    color: #ecf0f1;
    border-color: #ecf0f1;
}

body.dark-mode header.scrolled .dark-mode-button {
    color: var(--primary-color);
    border-color: var(--primary-color);
}

body.dark-mode .dark-mode-button:hover {
    background: #ecf0f1;
    color: var(--primary-color);
}