/* ===== VARIABLES ===== */
:root {
    --primary-color: #27ae60;
    --primary-dark: #219653;
    --primary-light: #2ecc71;
    --dark-bg: #0e0e0e;
    --dark-surface: #161616;
    --dark-card: #1e1e1e;
    --dark-border: #2a2a2a;
    --text-primary: #e0e0e0;
    --text-secondary: #999;
    --transition: all 0.3s ease;
    --radius: 12px;
    --glow: 0 0 20px rgba(39, 174, 96, 0.15);
}

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

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

body {
    font-family:
        "Segoe UI",
        system-ui,
        -apple-system,
        sans-serif;
    color: var(--text-primary);
    background-color: var(--dark-bg);
    line-height: 1.7;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

/* ===== LAYOUT ===== */
section {
    padding: 100px 0;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
}

.container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
}

/* ===== TYPOGRAPHY ===== */
h1,
h2,
h3,
h4 {
    margin-bottom: 20px;
    color: var(--text-primary);
    line-height: 1.2;
}

h2 {
    font-size: clamp(2rem, 5vw, 2.8rem);
    text-align: center;
    position: relative;
    padding-bottom: 18px;
    margin-bottom: 50px;
}

h2::after {
    content: "";
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background: linear-gradient(
        90deg,
        var(--primary-dark),
        var(--primary-light)
    );
    border-radius: 2px;
}

p {
    margin-bottom: 15px;
    color: var(--text-secondary);
}

a {
    text-decoration: none;
    color: var(--primary-color);
    transition: var(--transition);
}

a:hover {
    color: var(--primary-light);
}

/* ===== HEADER ===== */
header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    padding: 18px 0;
    background-color: rgba(14, 14, 14, 0.85);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    box-shadow: 0 1px 0 rgba(255, 255, 255, 0.04);
    z-index: 1000;
    transition:
        padding 0.3s ease,
        background-color 0.3s ease;
}

header.scrolled {
    padding: 8px 0;
    background-color: rgba(14, 14, 14, 0.95);
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.4);
}

.header-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.6rem;
    font-weight: 700;
    color: var(--primary-color) !important;
    letter-spacing: -0.02em;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 0.4rem;
}

.nav-links li {
    margin: 0;
    padding: 0;
}

.nav-links a {
    color: var(--text-secondary);
    font-weight: 500;
    font-size: 0.9rem;
    padding: 8px 14px;
    border-radius: 6px;
    position: relative;
    display: inline-block;
    text-transform: lowercase;
    letter-spacing: 0.03em;
    transition:
        color 0.3s ease,
        background-color 0.3s ease;
}

.nav-links a:hover,
.nav-links a.active {
    color: var(--primary-color);
    background-color: rgba(39, 174, 96, 0.08);
}

.glitch-text span {
    display: inline-block;
    min-width: 0.5em;
    text-align: center;
}

/* Hamburger */
.hamburger {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 32px;
    height: 32px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
    z-index: 1001;
}

.hamburger span {
    display: block;
    width: 100%;
    height: 2px;
    background-color: var(--text-primary);
    border-radius: 2px;
    transition:
        transform 0.3s ease,
        opacity 0.3s ease;
}

.hamburger.open span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.hamburger.open span:nth-child(2) {
    opacity: 0;
}

.hamburger.open span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

/* ===== HERO ===== */
#hero {
    background-color: var(--dark-bg);
    position: relative;
    padding-top: 120px;
    overflow: hidden;
}

.hero-bg-video {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    z-index: 0;
    opacity: 0.18;
    pointer-events: none;
}

.hero-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(
        180deg,
        rgba(14, 14, 14, 0.3) 0%,
        rgba(14, 14, 14, 0.8) 100%
    );
    z-index: 0;
}

.hero-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 60px;
    position: relative;
    z-index: 1;
}

.hero-text {
    flex: 1;
    max-width: 640px;
}

.hero-greeting {
    font-size: 1.1rem;
    color: var(--primary-color);
    font-weight: 500;
    margin-bottom: 8px;
    letter-spacing: 0.05em;
    opacity: 0;
    animation: fadeInUp 0.8s ease forwards 0.2s;
}

.hero-text h1 {
    font-size: clamp(2.5rem, 6vw, 4rem);
    margin-bottom: 8px;
    color: var(--text-primary);
    letter-spacing: -0.03em;
    opacity: 0;
    animation: fadeInUp 0.8s ease forwards 0.4s;
}

.typing-wrapper {
    font-size: clamp(1.2rem, 3vw, 1.8rem);
    color: var(--primary-color);
    margin-bottom: 24px;
    font-weight: 400;
    min-height: 2.2em;
    opacity: 0;
    animation: fadeInUp 0.8s ease forwards 0.6s;
}

.cursor {
    animation: blink 1s step-end infinite;
    color: var(--primary-color);
    font-weight: 300;
}

@keyframes blink {
    50% {
        opacity: 0;
    }
}

.hero-description {
    font-size: 1.05rem;
    margin-bottom: 32px;
    max-width: 560px;
    line-height: 1.7;
    opacity: 0;
    animation: fadeInUp 0.8s ease forwards 0.8s;
}

.hero-buttons {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
    opacity: 0;
    animation: fadeInUp 0.8s ease forwards 1s;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 28px;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

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

.btn-primary:hover {
    background-color: var(--primary-light);
    color: var(--dark-bg);
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(39, 174, 96, 0.3);
}

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

.btn-outline:hover {
    background-color: var(--primary-color);
    color: var(--dark-bg);
    transform: translateY(-2px);
}

.profile-picture {
    width: 380px;
    height: 380px;
    object-fit: cover;
    border-radius: 50%;
    border: 3px solid var(--primary-color);
    box-shadow:
        0 0 40px 12px rgba(39, 174, 96, 0.1),
        0 0 80px 24px rgba(39, 174, 96, 0.05);
    opacity: 0;
    animation: fadeInScale 1s ease forwards 0.6s;
    flex-shrink: 0;
}

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

@keyframes fadeInScale {
    from {
        opacity: 0;
        transform: scale(0.9);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

.scroll-down {
    position: absolute;
    bottom: 32px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
    color: var(--text-secondary);
    animation: bounce 2.5s infinite;
    z-index: 1;
}

.scroll-down span {
    font-size: 0.8rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
}

@keyframes bounce {
    0%,
    20%,
    50%,
    80%,
    100% {
        transform: translateY(0) translateX(-50%);
    }
    40% {
        transform: translateY(-14px) translateX(-50%);
    }
    60% {
        transform: translateY(-7px) translateX(-50%);
    }
}

/* ===== ABOUT ===== */
#about {
    background: url("aboutme.png") center/cover no-repeat;
    background-attachment: fixed;
}

.about-content {
    max-width: 900px;
    margin: 0 auto;
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr 240px;
    gap: 50px;
    align-items: start;
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s ease;
}

.about-content.visible .about-grid {
    opacity: 1;
    transform: translateY(0);
}

.about-text p {
    font-size: 1.05rem;
    line-height: 1.8;
    margin-bottom: 18px;
}

.about-highlights {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.highlight-card {
    background: var(--dark-card);
    border: 1px solid var(--dark-border);
    border-radius: var(--radius);
    padding: 20px;
    text-align: center;
    transition: var(--transition);
}

.highlight-card:hover {
    border-color: rgba(39, 174, 96, 0.3);
    box-shadow: var(--glow);
    transform: translateY(-4px);
}

.highlight-number {
    display: block;
    font-size: 2.2rem;
    font-weight: 700;
    color: var(--primary-color);
    line-height: 1;
    margin-bottom: 6px;
}

.highlight-label {
    font-size: 0.85rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

/* ===== TIMELINE (Education & Experience) ===== */
.timeline {
    position: relative;
    max-width: 1000px;
    margin: 40px auto 0;
}

.timeline::after {
    content: "";
    position: absolute;
    width: 3px;
    background: linear-gradient(
        180deg,
        var(--primary-dark),
        var(--primary-color),
        transparent
    );
    top: 0;
    bottom: 0;
    left: 50%;
    margin-left: -1.5px;
    border-radius: 10px;
}

.timeline-item {
    padding: 10px 40px;
    position: relative;
    width: 50%;
    opacity: 0;
    transform: translateX(-50px);
    transition: all 0.8s ease;
}

.timeline-item.visible {
    opacity: 1;
    transform: translateX(0);
}

.timeline-item:nth-child(odd) {
    left: 0;
}

.timeline-item:nth-child(even) {
    left: 50%;
    transform: translateX(50px);
}

.timeline-item:nth-child(even).visible {
    transform: translateX(0);
}

.timeline-content {
    padding: 24px;
    background-color: var(--dark-card);
    border-radius: var(--radius);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.2);
    transition: var(--transition);
    border: 1px solid var(--dark-border);
}

.timeline-content:hover {
    box-shadow:
        0 8px 30px rgba(0, 0, 0, 0.3),
        var(--glow);
    transform: translateY(-4px);
    border-color: rgba(39, 174, 96, 0.2);
}

.timeline-content h3 {
    color: var(--primary-color);
    margin-bottom: 8px;
    font-size: 1.15rem;
}

.timeline-content h4 {
    font-size: 0.95rem;
    margin-bottom: 12px;
    color: var(--text-secondary);
    font-weight: 400;
}

.timeline-content .date {
    display: inline-block;
    margin-top: 8px;
    font-size: 0.85rem;
    color: var(--primary-color);
    background: rgba(39, 174, 96, 0.1);
    padding: 4px 12px;
    border-radius: 20px;
    font-weight: 500;
}

.timeline-item::after {
    content: "";
    position: absolute;
    width: 16px;
    height: 16px;
    right: -8px;
    background-color: var(--dark-bg);
    border: 3px solid var(--primary-color);
    top: 24px;
    border-radius: 50%;
    z-index: 1;
    transition: var(--transition);
}

.timeline-item:hover::after {
    background-color: var(--primary-color);
    box-shadow: 0 0 12px rgba(39, 174, 96, 0.4);
}

.timeline-item:nth-child(even)::after {
    left: -8px;
}

/* ===== SKILLS ===== */
#skills {
    background-color: var(--dark-bg);
}

.skills-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(min(100%, 320px), 1fr));
    gap: 40px;
    max-width: 1100px;
    margin: 0 auto;
}

.skills-category {
    background: var(--dark-card);
    border: 1px solid var(--dark-border);
    border-radius: var(--radius);
    padding: 30px;
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s ease;
}

.skills-category.visible {
    opacity: 1;
    transform: translateY(0);
}

.skills-category:hover {
    border-color: rgba(39, 174, 96, 0.2);
    box-shadow: var(--glow);
}

.skills-category h3 {
    margin-bottom: 24px;
    color: var(--primary-color);
    text-align: center;
    font-size: 1.1rem;
    text-transform: uppercase;
    letter-spacing: 0.06em;
}

.skill-item {
    margin-bottom: 18px;
}

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

.skill-name {
    display: flex;
    justify-content: space-between;
    margin-bottom: 8px;
    font-size: 0.9rem;
    color: var(--text-primary);
}

.skill-bar {
    height: 8px;
    background-color: var(--dark-surface);
    border-radius: 4px;
    overflow: hidden;
}

.skill-progress {
    height: 100%;
    background: linear-gradient(
        90deg,
        var(--primary-dark),
        var(--primary-color)
    );
    border-radius: 4px;
    width: 0;
    transition: width 1.5s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
}

.skill-progress::after {
    content: "";
    position: absolute;
    right: 0;
    top: 0;
    width: 8px;
    height: 100%;
    background: var(--primary-light);
    border-radius: 0 4px 4px 0;
    opacity: 0.6;
}

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

.languages-container {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    max-width: 1100px;
    margin: 0 auto;
}

.language-item {
    background-color: var(--dark-card);
    border-radius: var(--radius);
    padding: 28px;
    width: 100%;
    text-align: left;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.2);
    transition: var(--transition);
    opacity: 0;
    transform: translateY(30px);
    border: 1px solid var(--dark-border);
    position: relative;
    overflow: hidden;
}

.language-item.visible {
    opacity: 1;
    transform: translateY(0);
}

.language-item:hover {
    transform: translateY(-8px);
    box-shadow:
        0 12px 32px rgba(0, 0, 0, 0.3),
        var(--glow);
    border-color: rgba(39, 174, 96, 0.2);
}

.language-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 16px;
}

.language-name {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
}

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

.language-progress-container {
    width: 100%;
    height: 6px;
    background-color: var(--dark-surface);
    border-radius: 3px;
    margin-bottom: 16px;
    overflow: hidden;
}

.language-progress-bar {
    height: 100%;
    background: linear-gradient(
        90deg,
        var(--primary-dark),
        var(--primary-color)
    );
    border-radius: 3px;
    width: 0;
    transition: width 1.5s cubic-bezier(0.4, 0, 0.2, 1);
}

.language-details {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 14px;
}

.language-skill {
    background-color: rgba(39, 174, 96, 0.08);
    color: var(--primary-light);
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 0.8rem;
    border: 1px solid rgba(39, 174, 96, 0.15);
}

.language-description {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-top: 4px;
    line-height: 1.5;
}

.language-accent {
    position: absolute;
    top: 0;
    right: 0;
    width: 80px;
    height: 80px;
    background: radial-gradient(
        circle at top right,
        rgba(39, 174, 96, 0.15),
        transparent 70%
    );
    border-radius: 0 12px 0 80px;
}

/* ===== PROJECTS ===== */
#projects {
    background-color: var(--dark-bg);
}

.projects-container {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(min(100%, 280px), 1fr));
    gap: 28px;
    max-width: 1200px;
    margin: 0 auto;
}

.project-item {
    background-color: var(--dark-card);
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.2);
    transition: var(--transition);
    opacity: 0;
    transform: translateY(30px);
    border: 1px solid var(--dark-border);
    display: flex;
    flex-direction: column;
}

.project-item.visible {
    opacity: 1;
    transform: translateY(0);
}

.project-item:hover {
    transform: translateY(-8px);
    box-shadow:
        0 12px 32px rgba(0, 0, 0, 0.3),
        var(--glow);
    border-color: rgba(39, 174, 96, 0.2);
}

.project-image {
    height: 180px;
    background-color: var(--dark-surface);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.project-image::before {
    content: "";
    position: absolute;
    inset: 0;
    background: radial-gradient(
        circle at center,
        rgba(39, 174, 96, 0.06),
        transparent 70%
    );
}

.project-info {
    padding: 24px;
    display: flex;
    flex-direction: column;
    flex: 1;
}

.project-info h3 {
    color: var(--primary-color);
    margin-bottom: 10px;
    font-size: 1.15rem;
}

.project-info p {
    font-size: 0.92rem;
    flex: 1;
}

.project-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 16px;
}

.project-tag {
    background-color: rgba(39, 174, 96, 0.08);
    color: var(--primary-light);
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 0.78rem;
    border: 1px solid rgba(39, 174, 96, 0.15);
    font-weight: 500;
}

.project-link {
    display: inline-block;
    margin-top: 16px;
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--primary-color);
    transition: var(--transition);
}

.project-link:hover {
    color: var(--primary-light);
    letter-spacing: 0.02em;
}

/* ===== CONTACT ===== */
#contact {
    background-color: var(--dark-surface);
}

.contact-container {
    display: flex;
    flex-wrap: wrap;
    gap: 50px;
    max-width: 1000px;
    margin: 0 auto;
}

.contact-info {
    flex: 1;
    min-width: min(100%, 300px);
    opacity: 0;
    transform: translateX(-30px);
    transition: all 0.8s ease;
}

.contact-info.visible {
    opacity: 1;
    transform: translateX(0);
}

.contact-info h3 {
    color: var(--primary-color);
    margin-bottom: 8px;
}

.contact-intro {
    margin-bottom: 28px;
    font-size: 0.95rem;
}

.contact-item {
    display: flex;
    align-items: center;
    margin-bottom: 22px;
}

.contact-icon {
    width: 44px;
    height: 44px;
    background: linear-gradient(
        135deg,
        var(--primary-color),
        var(--primary-dark)
    );
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: 16px;
    flex-shrink: 0;
}

.contact-form {
    flex: 1;
    min-width: min(100%, 300px);
    opacity: 0;
    transform: translateX(30px);
    transition: all 0.8s ease;
}

.contact-form.visible {
    opacity: 1;
    transform: translateX(0);
}

.contact-form h3 {
    color: var(--primary-color);
    margin-bottom: 20px;
}

.form-group {
    margin-bottom: 18px;
}

.form-group label {
    display: block;
    margin-bottom: 6px;
    font-weight: 500;
    font-size: 0.9rem;
    color: var(--text-primary);
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 12px 16px;
    background-color: var(--dark-card);
    border: 1px solid var(--dark-border);
    border-radius: 8px;
    font-size: 0.95rem;
    transition: var(--transition);
    color: var(--text-primary);
    font-family: inherit;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: #555;
}

.form-group input:focus,
.form-group textarea:focus {
    border-color: var(--primary-color);
    outline: none;
    box-shadow: 0 0 0 3px rgba(39, 174, 96, 0.12);
}

.form-group textarea {
    height: 140px;
    resize: vertical;
}

.submit-btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    background: linear-gradient(
        135deg,
        var(--primary-color),
        var(--primary-dark)
    );
    color: var(--dark-bg);
    border: none;
    padding: 13px 32px;
    border-radius: 8px;
    font-size: 1rem;
    cursor: pointer;
    transition: var(--transition);
    font-weight: 600;
    font-family: inherit;
}

.submit-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 24px rgba(39, 174, 96, 0.3);
}

/* ===== FOOTER ===== */
footer {
    background-color: #080808;
    color: var(--text-primary);
    padding: 40px 0;
    text-align: center;
}

.footer-content {
    max-width: 800px;
    margin: 0 auto;
}

.footer-name {
    font-size: 1.4rem;
    color: var(--primary-color);
    margin-bottom: 10px;
    font-weight: 700;
}

.footer-links {
    display: flex;
    justify-content: center;
    list-style: none;
    gap: 20px;
    margin: 24px 0;
}

.footer-links a {
    color: var(--text-secondary);
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    border-radius: 10px;
    border: 1px solid var(--dark-border);
}

.footer-links a:hover {
    color: var(--primary-color);
    border-color: rgba(39, 174, 96, 0.3);
    background-color: rgba(39, 174, 96, 0.08);
}

.footer-links a:hover svg path {
    stroke: var(--primary-color);
}

.copyright {
    font-size: 0.85rem;
    color: #555;
}

/* ===== RESPONSIVE ===== */

/* --- 1200px: languages grid to 2 cols --- */
@media (max-width: 1200px) {
    .languages-container {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* --- 1070px: hamburger menu appears --- */
@media (max-width: 1070px) {
    .hamburger {
        display: flex;
    }

    .nav-links {
        display: none;
        position: fixed;
        top: 0;
        right: 0;
        width: min(320px, 85vw);
        height: 100vh;
        height: 100dvh;
        background: rgba(14, 14, 14, 0.98);
        backdrop-filter: blur(20px);
        -webkit-backdrop-filter: blur(20px);
        flex-direction: column;
        padding: 100px 40px 40px;
        gap: 0;
        box-shadow: -4px 0 30px rgba(0, 0, 0, 0.5);
        border-left: 1px solid var(--dark-border);
        overflow-y: auto;
    }

    .nav-links.open {
        display: flex;
    }

    .nav-links a {
        font-size: 1.1rem;
        padding: 14px 0;
        border-bottom: 1px solid var(--dark-border);
        border-radius: 0;
        width: 100%;
    }

    .nav-links a:hover {
        background: none;
        padding-left: 8px;
    }
}

/* --- 992px: content reflow --- */
@media (max-width: 992px) {
    .hero-content {
        flex-direction: column;
        text-align: center;
    }

    .hero-text {
        max-width: 100%;
    }

    .hero-description {
        max-width: 100%;
    }

    .hero-buttons {
        justify-content: center;
    }

    .profile-picture {
        width: 280px;
        height: 280px;
    }

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

    .about-highlights {
        flex-direction: row;
        justify-content: center;
        flex-wrap: wrap;
    }

    .highlight-card {
        flex: 1 1 140px;
        max-width: 200px;
    }

    .timeline::after {
        left: 24px;
    }

    .timeline-item {
        width: 100%;
        padding-left: 60px;
        padding-right: 20px;
    }

    .timeline-item:nth-child(even) {
        left: 0;
    }

    .timeline-item::after {
        left: 16px;
        right: auto;
    }

    .timeline-item:nth-child(even)::after {
        left: 16px;
    }

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

    .contact-container {
        flex-direction: column;
        gap: 32px;
    }

    .contact-info,
    .contact-form {
        min-width: 100%;
    }
}

/* --- 768px: tablet --- */
@media (max-width: 768px) {
    section {
        padding: 80px 0;
    }

    h2 {
        font-size: 1.8rem;
        margin-bottom: 36px;
    }

    .profile-picture {
        width: 220px;
        height: 220px;
    }

    .languages-container {
        grid-template-columns: repeat(2, 1fr);
        gap: 16px;
    }

    .language-item {
        padding: 22px;
    }

    .language-name {
        font-size: 1.1rem;
    }

    .language-level {
        font-size: 0.78rem;
    }

    .language-description {
        font-size: 0.82rem;
    }

    .projects-container {
        grid-template-columns: 1fr;
        max-width: 500px;
        margin: 0 auto;
    }

    .timeline-item {
        padding-left: 50px;
        padding-right: 10px;
    }

    .timeline-content {
        padding: 20px;
    }

    .scroll-down {
        display: none;
    }
}

/* --- 576px: large phones --- */
@media (max-width: 576px) {
    section {
        padding: 60px 0;
        min-height: auto;
    }

    .container {
        width: 92%;
    }

    #hero {
        padding-top: 90px;
    }

    .profile-picture {
        width: 180px;
        height: 180px;
    }

    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }

    .btn {
        width: 100%;
        justify-content: center;
    }

    .about-highlights {
        flex-direction: column;
    }

    .highlight-card {
        width: 100%;
        max-width: 100%;
    }

    .languages-container {
        grid-template-columns: 1fr;
    }

    .language-item {
        padding: 20px;
    }

    .timeline-item {
        padding-left: 40px;
    }

    .timeline-item::after {
        left: 12px;
        width: 14px;
        height: 14px;
    }

    .timeline::after {
        left: 18px;
    }

    .timeline-content {
        padding: 16px;
    }

    .timeline-content h3 {
        font-size: 1.05rem;
    }

    .contact-icon {
        width: 38px;
        height: 38px;
    }

    .contact-icon svg {
        width: 16px;
        height: 16px;
    }

    /* Prevent iOS zoom on input focus */
    .form-group input,
    .form-group textarea {
        font-size: 16px;
    }

    .submit-btn {
        width: 100%;
        justify-content: center;
    }

    footer {
        padding: 30px 0;
    }
}

/* --- 480px: small phones --- */
@media (max-width: 480px) {
    .hero-text h1 {
        font-size: clamp(1.6rem, 8vw, 2.2rem);
    }

    .hero-greeting {
        font-size: 0.95rem;
    }

    .typing-wrapper {
        font-size: 1rem;
    }

    .highlight-number {
        font-size: 1.8rem;
    }

    .highlight-label {
        font-size: 0.78rem;
    }

    .skills-category {
        padding: 22px;
    }

    .project-image {
        height: 140px;
    }

    .project-image svg {
        width: 60px;
        height: 60px;
    }

    .project-info {
        padding: 18px;
    }

    .language-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 2px;
    }

    .nav-links {
        width: 100vw;
        padding: 90px 30px 30px;
    }
}

/* --- 360px: very small phones --- */
@media (max-width: 360px) {
    .container {
        width: 94%;
    }

    .hero-text h1 {
        font-size: 1.5rem;
    }

    .hero-description {
        font-size: 0.9rem;
    }

    .btn {
        font-size: 0.9rem;
        padding: 10px 20px;
    }

    .nav-links a {
        font-size: 1rem;
        padding: 12px 0;
    }

    .project-info h3 {
        font-size: 1rem;
    }

    .project-info p {
        font-size: 0.82rem;
    }

    .footer-name {
        font-size: 1.15rem;
    }
}