/* ============================================
   GLOBAL STYLES & VARIABLES
   ============================================ */

:root {
    --primary-color: #00d4ff;
    --secondary-color: #ff006e;
    --dark-bg: #0a0e27;
    --darker-bg: #050812;
    --card-bg: #1a1f3a;
    --text-primary: #ffffff;
    --text-secondary: #b0b9c3;
    --border-color: #2a2f47;
    --success-color: #00d084;
    --error-color: #ff4757;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-smooth: 0.45s cubic-bezier(0.22, 1, 0.36, 1);
    --transition-fast: 0.2s ease-in-out;
    --shadow-soft: 0 14px 35px rgba(0, 0, 0, 0.18);
    --shadow-glow: 0 18px 45px rgba(0, 212, 255, 0.18);
}

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: var(--dark-bg);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    opacity: 0;
    transition: opacity 0.45s ease;
}

body.is-loaded {
    opacity: 1;
}

html {
    scroll-behavior: smooth;
}

html,
body {
    max-width: 100%;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

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

/* ============================================
   NAVIGATION
   ============================================ */

.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(10, 14, 39, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    border-bottom: 1px solid var(--border-color);
    padding: 1rem 0;
    transition: background var(--transition-smooth), border-color var(--transition-smooth), box-shadow var(--transition-smooth), padding var(--transition-smooth);
}

.navbar.scrolled {
    background: rgba(5, 8, 18, 0.88);
    box-shadow: 0 10px 35px rgba(0, 0, 0, 0.22);
}

.navbar-container {
    position: relative;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
    min-width: 0;
}

.logo a {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--primary-color);
    text-decoration: none;
    transition: var(--transition);
    display: inline-block;
}

.logo a:hover {
    color: var(--secondary-color);
    transform: translateY(-1px);
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
    min-width: 0;
}

.nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    transition: color var(--transition-fast), transform var(--transition-fast);
    position: relative;
    display: inline-flex;
    padding-bottom: 0.2rem;
}

.nav-link:hover {
    color: var(--primary-color);
    transform: translateY(-1px);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 100%;
    height: 2px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    transform: scaleX(0);
    transform-origin: left center;
    transition: transform var(--transition-smooth);
}

.nav-link:hover::after,
.nav-link.active::after {
    transform: scaleX(1);
}

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

.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
}

.hamburger span {
    width: 25px;
    height: 3px;
    background-color: var(--primary-color);
    margin: 5px 0;
    transition: var(--transition);
}

/* ============================================
   HERO SECTION
   ============================================ */

.hero {
    padding: 200px 0 100px;
    background: linear-gradient(135deg, var(--dark-bg), var(--darker-bg));
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -10%;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(0, 212, 255, 0.1) 0%, transparent 70%);
    border-radius: 50%;
    animation: float 6s ease-in-out infinite;
}

.hero::after {
    content: '';
    position: absolute;
    bottom: -30%;
    left: -5%;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(255, 0, 110, 0.1) 0%, transparent 70%);
    border-radius: 50%;
    animation: float 8s ease-in-out infinite;
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    align-items: center;
    gap: 60px;
    position: relative;
    z-index: 1;
}

.hero-text,
.hero-image,
.project-card,
.contact-card,
.about-card,
.skill-category,
.education-content,
.certification-item,
.language-card,
.achievement-card {
    min-width: 0;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 800;
    margin-bottom: 1rem;
    line-height: 1.2;
}

.highlight {
    color: var(--primary-color);
    text-shadow: 0 0 20px rgba(0, 212, 255, 0.3);
}

.hero-subtitle {
    font-size: 1.5rem;
    color: var(--secondary-color);
    margin-bottom: 1.5rem;
    font-weight: 600;
}

.hero-description {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: 2rem;
    line-height: 1.8;
}

.hero-buttons {
    display: flex;
    gap: 1.5rem;
    margin-bottom: 3rem;
}

.btn {
    padding: 12px 30px;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    transition: transform var(--transition-fast), box-shadow var(--transition-smooth), background-color var(--transition-fast), color var(--transition-fast), border-color var(--transition-fast);
    border: 2px solid transparent;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    flex-wrap: wrap;
    gap: 0.5rem;
    font-size: 1rem;
    position: relative;
    overflow: hidden;
    isolation: isolate;
    will-change: transform;
}

.btn::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(120deg, rgba(255, 255, 255, 0.18), transparent 55%);
    opacity: 0;
    transform: translateX(-18%);
    transition: opacity var(--transition-fast), transform var(--transition-smooth);
    pointer-events: none;
    z-index: -1;
}

.btn-primary {
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    color: var(--dark-bg);
    box-shadow: 0 10px 30px rgba(0, 212, 255, 0.3);
}

.btn-primary:hover {
    transform: translateY(-4px) scale(1.01);
    box-shadow: 0 18px 45px rgba(0, 212, 255, 0.38);
}

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

.btn-secondary:hover {
    background: var(--primary-color);
    color: var(--dark-bg);
    transform: translateY(-4px) scale(1.01);
    box-shadow: var(--shadow-glow);
}

.btn:hover::before,
.btn:focus-visible::before {
    opacity: 1;
    transform: translateX(0);
}

.btn:active {
    transform: translateY(-1px) scale(0.985);
}

.btn-small {
    padding: 8px 20px;
    font-size: 0.9rem;
    color: var(--dark-bg);
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
}

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

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

.social-links {
    display: flex;
    gap: 1rem;
}

.social-link {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: var(--card-bg);
    color: var(--primary-color);
    display: flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    border: 2px solid var(--border-color);
    transition: transform var(--transition-fast), background-color var(--transition-fast), border-color var(--transition-fast), color var(--transition-fast), box-shadow var(--transition-smooth);
    font-size: 1.2rem;
    will-change: transform;
}

.social-link:hover {
    background: var(--primary-color);
    color: var(--dark-bg);
    border-color: var(--primary-color);
    transform: translateY(-4px) scale(1.04);
    box-shadow: var(--shadow-glow);
}

.code-snippet {
    width: 400px;
    max-width: 100%;
    border-radius: 12px;
    background: rgba(10, 20, 50, 0.8);
    border: 2px solid var(--border-color);
    font-family: 'Courier New', monospace;
    font-size: 14px;
    color: var(--text-secondary);
    transition: transform var(--transition-smooth), border-color var(--transition-fast), box-shadow var(--transition-smooth), background-color var(--transition-smooth);
    box-shadow: 0 20px 60px rgba(0, 212, 255, 0.1);
    overflow: hidden;
    will-change: transform;
    transform: translate3d(0, var(--snippet-offset, 0), 0);
}

.code-snippet:hover {
    border-color: var(--primary-color);
    box-shadow: 0 30px 80px rgba(0, 212, 255, 0.2);
    background: rgba(10, 20, 50, 0.95);
    transform: translate3d(0, calc(var(--snippet-offset, 0) - 8px), 0) scale(1.015);
}

.code-terminal-header {
    background: #1a1a1a;
    padding: 12px 15px;
    display: flex;
    gap: 8px;
    align-items: center;
    border-bottom: 1px solid var(--border-color);
}

.terminal-circle {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    display: inline-block;
}

.terminal-circle.red {
    background-color: #ff5f56;
}

.terminal-circle.yellow {
    background-color: #ffbd2e;
}

.terminal-circle.green {
    background-color: #27c93f;
}

.code-content {
    padding: 20px;
    overflow-x: auto;
    white-space: nowrap;
    line-height: 1.8;
}

.code-line {
    margin: 0.5rem 0;
    display: flex;
    align-items: center;
}

.code-line.indent-1 {
    margin-left: 20px;
}

.code-keyword {
    color: #ff7aa2;
    font-weight: bold;
}

.code-variable {
    color: var(--primary-color);
}

.code-property {
    color: #a3f7ff;
}

.code-string {
    color: #90ee90;
}

/* ============================================
   SECTION STYLES
   ============================================ */

section {
    padding: 100px 0;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: 3rem;
    text-align: center;
    position: relative;
    display: inline-block;
    width: 100%;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -15px;
    left: 50%;
    transform: translateX(-50%);
    width: 100px;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    border-radius: 2px;
}

/* ============================================
   ABOUT SECTION
   ============================================ */

.about {
    background: linear-gradient(135deg, rgba(0, 212, 255, 0.05), rgba(255, 0, 110, 0.05));
}

.about-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 15px;
    padding: 3rem;
    box-shadow: 0 10px 30px rgba(0, 212, 255, 0.1);
    transition: transform var(--transition-smooth), border-color var(--transition-fast), box-shadow var(--transition-smooth);
    max-width: 800px;
    margin: 0 auto;
    will-change: transform;
}

.about-card:hover {
    border-color: var(--primary-color);
    box-shadow: 0 20px 46px rgba(0, 212, 255, 0.16);
    transform: translateY(-6px);
}

.about-description {
    font-size: 1.1rem;
    color: var(--text-secondary);
    line-height: 1.9;
    margin-bottom: 1.5rem;
}

.about-description:last-of-type {
    margin-bottom: 2rem;
}

.about-location {
    color: var(--primary-color);
    font-weight: 600;
    font-size: 1.05rem;
}

/* ============================================
   SKILLS SECTION
   ============================================ */

.skills {
    background: linear-gradient(135deg, rgba(255, 0, 110, 0.05), rgba(0, 212, 255, 0.05));
}

.skills-grid {
    display: grid;
    gap: 4rem;
}

.skill-category {
    background: var(--card-bg);
    padding: 3rem;
    border-radius: 15px;
    border: 1px solid var(--border-color);
    transition: transform var(--transition-smooth), border-color var(--transition-fast), box-shadow var(--transition-smooth);
    will-change: transform;
}

.skill-category:hover {
    border-color: var(--primary-color);
    box-shadow: 0 15px 40px rgba(0, 212, 255, 0.1);
    transform: translateY(-6px);
}

.skill-category-title {
    font-size: 1.5rem;
    color: var(--primary-color);
    margin-bottom: 2rem;
    font-weight: 700;
}

.skill-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: 1.5rem;
}

.skill-card {
    background: rgba(0, 212, 255, 0.05);
    padding: 2rem 1.5rem;
    border-radius: 12px;
    text-align: center;
    border: 1px solid var(--border-color);
    transition: transform var(--transition-smooth), background var(--transition-smooth), border-color var(--transition-fast), box-shadow var(--transition-smooth);
    cursor: pointer;
    will-change: transform;
}

.skill-card:hover {
    background: linear-gradient(135deg, rgba(0, 212, 255, 0.2), rgba(255, 0, 110, 0.2));
    border-color: var(--primary-color);
    transform: translateY(-8px);
    box-shadow: 0 18px 40px rgba(0, 212, 255, 0.18);
}

.skill-card i {
    font-size: 2rem;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
    transition: transform var(--transition-smooth), color var(--transition-fast);
}

.skill-card-logo {
    width: 2.25rem;
    height: 2.25rem;
    margin: 0 auto 0.5rem;
    display: block;
    transition: transform var(--transition-smooth), filter var(--transition-smooth);
}

.skill-card p {
    font-weight: 600;
    color: var(--text-primary);
}

.skill-card:hover i,
.skill-card:hover .skill-card-logo {
    transform: translateY(-2px) scale(1.08);
}

/* ============================================
   PROJECTS SECTION
   ============================================ */

.projects {
    background: linear-gradient(135deg, var(--dark-bg), var(--darker-bg));
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2.5rem;
    margin-bottom: 4rem;
}

.project-card {
    background: var(--card-bg);
    padding: 2.5rem;
    border-radius: 15px;
    border: 1px solid var(--border-color);
    transition: transform var(--transition-smooth), border-color var(--transition-fast), box-shadow var(--transition-smooth);
    display: flex;
    flex-direction: column;
    position: relative;
    overflow: hidden;
    will-change: transform;
}

.project-card::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(0, 212, 255, 0.08), transparent 40%, rgba(255, 0, 110, 0.06));
    opacity: 0;
    transition: opacity var(--transition-smooth);
    pointer-events: none;
}

.project-card:hover {
    border-color: var(--primary-color);
    box-shadow: 0 22px 55px rgba(0, 212, 255, 0.18);
    transform: translateY(-8px);
}

.project-card:hover::after {
    opacity: 1;
}

.project-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.project-header i {
    font-size: 2rem;
    color: var(--primary-color);
}

.project-header h3 {
    font-size: 1.5rem;
}

.project-description {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    flex-grow: 1;
}

.project-tech {
    display: flex;
    flex-wrap: wrap;
    gap: 0.8rem;
    margin-bottom: 2rem;
}

.tech-tag {
    background: rgba(0, 212, 255, 0.1);
    color: var(--primary-color);
    padding: 0.4rem 0.8rem;
    border-radius: 20px;
    font-size: 0.8rem;
    border: 1px solid rgba(0, 212, 255, 0.3);
    transition: transform var(--transition-fast), background-color var(--transition-fast), border-color var(--transition-fast);
}

.project-card:hover .tech-tag {
    transform: translateY(-1px);
}

.project-links {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
}

.projects-coming-soon {
    text-align: center;
    margin-top: 3rem;
    padding: 3rem 2rem;
    background: linear-gradient(135deg, rgba(0, 212, 255, 0.1), rgba(255, 0, 110, 0.1));
    border: 2px dashed var(--border-color);
    border-radius: 15px;
    transition: transform var(--transition-smooth), border-color var(--transition-fast), background var(--transition-smooth), box-shadow var(--transition-smooth);
}

.projects-coming-soon:hover {
    border-color: var(--primary-color);
    background: linear-gradient(135deg, rgba(0, 212, 255, 0.15), rgba(255, 0, 110, 0.15));
    transform: translateY(-4px);
    box-shadow: var(--shadow-soft);
}

.projects-coming-soon h3 {
    font-size: 1.5rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.projects-coming-soon p {
    color: var(--text-secondary);
    font-size: 1.05rem;
}

/* ============================================
   CERTIFICATIONS SECTION
   ============================================ */

.certifications {
    background: linear-gradient(135deg, rgba(0, 212, 255, 0.05), rgba(255, 0, 110, 0.05));
}

.certifications-list {
    display: grid;
    gap: 2rem;
    max-width: 600px;
    margin: 0 auto;
}

.certification-item {
    display: flex;
    gap: 2rem;
    background: var(--card-bg);
    padding: 2rem;
    border-radius: 15px;
    border: 1px solid var(--border-color);
    transition: transform var(--transition-smooth), border-color var(--transition-fast), box-shadow var(--transition-smooth);
    will-change: transform;
}

.certification-item:hover {
    border-color: var(--primary-color);
    box-shadow: 0 15px 40px rgba(0, 212, 255, 0.1);
    transform: translateY(-6px) translateX(6px);
}

.cert-icon {
    font-size: 2rem;
    color: var(--primary-color);
}

.cert-content h3 {
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.cert-content p {
    color: var(--text-secondary);
}

/* ============================================
   ACHIEVEMENTS SECTION
   ============================================ */

.achievements {
    background: linear-gradient(135deg, rgba(255, 0, 110, 0.05), rgba(0, 212, 255, 0.05));
}

.achievements-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.achievement-card {
    background: var(--card-bg);
    padding: 2.5rem;
    border-radius: 15px;
    border: 1px solid var(--border-color);
    text-align: center;
    transition: transform var(--transition-smooth), border-color var(--transition-fast), box-shadow var(--transition-smooth);
    position: relative;
    overflow: hidden;
    will-change: transform;
}

.achievement-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    border-radius: 15px 15px 0 0;
}

.achievement-card:hover {
    border-color: var(--primary-color);
    box-shadow: 0 20px 50px rgba(0, 212, 255, 0.18);
    transform: translateY(-8px);
}

.achievement-rank {
    display: inline-block;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    color: var(--dark-bg);
    padding: 0.5rem 1rem;
    border-radius: 25px;
    font-weight: 700;
    font-size: 0.9rem;
    margin-bottom: 1rem;
}

.achievement-card h3 {
    font-size: 1.3rem;
    margin-bottom: 0.5rem;
}

.achievement-card p {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

/* ============================================
   EDUCATION SECTION
   ============================================ */

.education {
    background: linear-gradient(135deg, var(--darker-bg), var(--dark-bg));
}

.education-timeline {
    max-width: 800px;
    margin: 0 auto;
    position: relative;
    padding: 20px 0;
}

.education-timeline::before {
    content: '';
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    top: 0;
    bottom: 0;
    width: 3px;
    background: linear-gradient(180deg, var(--primary-color), var(--secondary-color));
}

.education-item {
    margin-bottom: 3rem;
    position: relative;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    align-items: center;
}

.education-item:nth-child(odd) .education-content {
    grid-column: 1;
    text-align: right;
    padding-right: 3rem;
}

.education-item:nth-child(even) .education-content {
    grid-column: 2;
    text-align: left;
    padding-left: 3rem;
}

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

.education-content {
    background: var(--card-bg);
    padding: 2rem;
    border-radius: 12px;
    border: 1px solid var(--border-color);
    transition: transform var(--transition-smooth), border-color var(--transition-fast), box-shadow var(--transition-smooth);
    will-change: transform;
}

.education-content:hover {
    border-color: var(--primary-color);
    box-shadow: 0 10px 35px rgba(0, 212, 255, 0.1);
    transform: translateY(-5px);
}

.education-header {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.education-header h3 {
    font-size: 1.3rem;
    color: var(--text-primary);
}

.year-badge {
    display: inline-block;
    background: rgba(0, 212, 255, 0.2);
    color: var(--primary-color);
    padding: 0.4rem 0.8rem;
    border-radius: 20px;
    font-size: 0.85rem;
    width: fit-content;
}

.institution {
    color: var(--secondary-color);
    font-weight: 600;
    margin-bottom: 1rem;
}

.education-details {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.education-details p {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

.education-details i {
    color: var(--primary-color);
    margin-right: 0.5rem;
}

/* ============================================
   LANGUAGES SECTION
   ============================================ */

.languages {
    background: linear-gradient(135deg, rgba(0, 212, 255, 0.05), rgba(255, 0, 110, 0.05));
}

.languages-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    max-width: 700px;
    margin: 0 auto;
}

.language-card {
    background: var(--card-bg);
    padding: 2rem;
    border-radius: 15px;
    border: 1px solid var(--border-color);
    transition: transform var(--transition-smooth), border-color var(--transition-fast), box-shadow var(--transition-smooth);
    will-change: transform;
}

.language-card:hover {
    border-color: var(--primary-color);
    box-shadow: 0 15px 40px rgba(0, 212, 255, 0.1);
    transform: translateY(-6px);
}

.language-card h3 {
    font-size: 1.3rem;
    margin-bottom: 0.5rem;
}

.language-level {
    color: var(--primary-color);
    font-size: 0.9rem;
    margin-bottom: 1rem;
    font-weight: 600;
}

.proficiency-bar {
    width: 100%;
    height: 8px;
    background: var(--border-color);
    border-radius: 10px;
    overflow: hidden;
}

.proficiency-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    border-radius: 10px;
    transform: scaleX(0);
    transform-origin: left center;
    transition: transform 1.1s cubic-bezier(0.22, 1, 0.36, 1);
    will-change: transform;
}

.proficiency-fill.is-animated {
    transform: scaleX(1);
}

/* ============================================
   CONTACT SECTION
   ============================================ */

.contact {
    background: linear-gradient(135deg, var(--dark-bg), var(--darker-bg));
}

.contact-card {
    background: var(--card-bg);
    border-radius: 20px;
    padding: 3rem;
    max-width: 650px;
    width: 90%;
    margin: 0 auto;
    border: 1px solid var(--border-color);
    box-shadow: 0 20px 60px rgba(0, 212, 255, 0.1);
    transition: transform var(--transition-smooth), border-color var(--transition-fast), box-shadow var(--transition-smooth);
    text-align: center;
    will-change: transform;
}

.contact-card .btn {
    max-width: 100%;
}

.contact-card:hover {
    border-color: var(--primary-color);
    box-shadow: 0 30px 80px rgba(0, 212, 255, 0.2);
    transform: translateY(-6px);
}

.contact-title {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 1.5rem;
    font-weight: 800;
}

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

.contact-details {
    background: rgba(0, 212, 255, 0.05);
    border-radius: 10px;
    padding: 1.5rem;
    margin-bottom: 2rem;
    border: 1px solid rgba(0, 212, 255, 0.2);
}

.contact-detail-item {
    color: var(--text-primary);
    font-size: 1.1rem;
    margin: 0.8rem 0;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.8rem;
    flex-wrap: wrap;
    word-break: break-word;
}

.contact-detail-item i {
    color: var(--primary-color);
    font-size: 1.3rem;
    flex-shrink: 0;
}

/* ============================================
   FOOTER
   ============================================ */

.footer {
    background: var(--darker-bg);
    border-top: 1px solid var(--border-color);
    padding: 2rem 0;
}

.footer-content {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 1rem;
}

.footer-content p {
    color: var(--text-secondary);
    text-align: center;
    word-break: break-word;
}

.footer-links {
    display: flex;
    gap: 1.5rem;
    justify-content: center;
}

.footer-links a {
    color: var(--primary-color);
    text-decoration: none;
    font-size: 1.3rem;
    transition: transform var(--transition-fast), color var(--transition-fast);
}

.footer-links a:hover {
    color: var(--secondary-color);
    transform: translateY(-3px);
}

a:focus-visible,
button:focus-visible,
.btn:focus-visible,
.nav-link:focus-visible,
.social-link:focus-visible {
    outline: 2px solid rgba(0, 212, 255, 0.55);
    outline-offset: 4px;
}

/* ============================================
   MOTION ENHANCEMENTS
   ============================================ */

.reveal {
    opacity: 0;
    transform: translate3d(0, 28px, 0);
    transition: opacity 0.7s ease, transform 0.7s cubic-bezier(0.22, 1, 0.36, 1);
    transition-delay: var(--reveal-delay, 0ms);
    will-change: transform, opacity;
}

.reveal[data-reveal="left"] {
    transform: translate3d(-26px, 0, 0);
}

.reveal[data-reveal="right"] {
    transform: translate3d(26px, 0, 0);
}

.reveal.is-visible {
    opacity: 1;
    transform: translate3d(0, 0, 0);
}

#scrollToTop {
    position: fixed;
    right: 24px;
    bottom: 24px;
    width: 50px;
    height: 50px;
    border: none;
    border-radius: 50%;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: var(--dark-bg);
    font-size: 1.1rem;
    box-shadow: 0 14px 32px rgba(0, 212, 255, 0.26);
    cursor: pointer;
    z-index: 999;
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transform: translate3d(0, 12px, 0) scale(0.94);
    transition: opacity var(--transition-fast), visibility var(--transition-fast), transform var(--transition-smooth), box-shadow var(--transition-smooth);
}

#scrollToTop.is-visible {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    transform: translate3d(0, 0, 0) scale(1);
}

#scrollToTop:hover {
    transform: translate3d(0, -4px, 0) scale(1.04);
    box-shadow: 0 18px 42px rgba(0, 212, 255, 0.32);
}

#scrollToTop:active {
    transform: translate3d(0, -1px, 0) scale(0.98);
}

/* ============================================
   ANIMATIONS
   ============================================ */

@keyframes float {
    0%, 100% {
        transform: translateY(0px);
    }
    50% {
        transform: translateY(20px);
    }
}

@keyframes fillBar {
    from {
        width: 0;
    }
    to {
        width: 100%;
    }
}

@media (prefers-reduced-motion: reduce) {
    html {
        scroll-behavior: auto;
    }

    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }

    body {
        opacity: 1;
    }

    .reveal,
    .reveal[data-reveal="left"],
    .reveal[data-reveal="right"] {
        opacity: 1;
        transform: none;
    }

    .proficiency-fill {
        transform: scaleX(1);
    }
}

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

@media (max-width: 768px) {
    .btn:hover,
    .btn-primary:hover,
    .btn-secondary:hover,
    .skill-card:hover,
    .project-card:hover,
    .achievement-card:hover,
    .about-card:hover,
    .contact-card:hover,
    .language-card:hover,
    .education-content:hover,
    .certification-item:hover,
    .social-link:hover,
    .code-snippet:hover,
    #scrollToTop:hover {
        transform: translateY(-3px);
    }

    .reveal {
        transform: translate3d(0, 18px, 0);
    }
}

@media (max-width: 1024px) {
    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .code-snippet {
        width: 100%;
        max-width: 400px;
        margin: 0 auto;
    }

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

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

    .about-stats {
        grid-template-columns: repeat(3, 1fr);
    }

    .skill-cards {
        grid-template-columns: repeat(auto-fit, minmax(100px, 1fr));
    }

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

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

    .education-item {
        grid-template-columns: 1fr;
    }

    .education-item:nth-child(odd) .education-content,
    .education-item:nth-child(even) .education-content {
        grid-column: 1;
        text-align: left;
        padding-left: 0;
        padding-right: 0;
    }

    .timeline-marker {
        position: static;
        transform: none;
        margin-bottom: 1rem;
    }
}

@media (max-width: 768px) {
    .container {
        padding: 0 16px;
    }

    body.menu-open {
        overflow: hidden;
    }

    .nav-menu {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: rgba(10, 14, 39, 0.99);
        flex-direction: column;
        gap: 0;
        padding: 1.5rem;
        list-style: none;
        width: 100%;
        border-top: 1px solid var(--border-color);
        border-bottom: 1px solid var(--border-color);
        box-shadow: 0 18px 40px rgba(0, 0, 0, 0.35);
        max-height: 80vh;
        overflow-y: auto;
    }

    .nav-menu.active {
        display: flex;
    }

    .nav-link {
        padding: 1rem 0;
        border-bottom: 1px solid var(--border-color);
        display: block;
        text-align: center;
    }

    .nav-link:last-child {
        border-bottom: none;
    }

    .hamburger {
        display: flex;
        align-items: center;
        justify-content: center;
        width: 48px;
        height: 48px;
        padding: 0;
    }

    .hamburger.active span:nth-child(1) {
        transform: rotate(-45deg) translate(-8px, 8px);
    }

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

    .hamburger.active span:nth-child(3) {
        transform: rotate(45deg) translate(-8px, -8px);
    }

    .hero {
        padding: 140px 0 50px;
    }

    .hero-content {
        grid-template-columns: 1fr;
        gap: 30px;
    }

    .hero-title {
        font-size: 1.5rem;
        line-height: 1.2;
    }

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

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

    .hero-buttons {
        flex-direction: column;
        gap: 1rem;
        width: 100%;
    }

    .btn {
        width: 100%;
        justify-content: center;
        padding: 12px 20px;
        font-size: 0.95rem;
    }

    .btn-small {
        padding: 8px 16px;
        font-size: 0.85rem;
    }

    .hero-buttons,
    .social-links {
        justify-content: center;
        width: 100%;
    }

    .hero-image {
        width: 100%;
    }

    .code-snippet {
        width: 100%;
        max-width: 100%;
        margin: 0 auto;
    }

    .social-links {
        margin-top: 1.5rem;
        gap: 1.5rem;
    }

    section {
        padding: 50px 0;
    }

    .section-title {
        font-size: 1.6rem;
        margin-bottom: 2.5rem;
    }

    .about-card {
        padding: 1.5rem;
        width: 100%;
    }

    .about-stats {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

    .skill-category {
        padding: 1.5rem;
    }

    .skill-cards {
        grid-template-columns: 1fr;
        gap: 1rem;
    }

    .projects-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

    .project-card {
        padding: 1.5rem;
    }

    .projects-coming-soon {
        padding: 1.5rem;
    }

    .achievements-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

    .achievement-card {
        padding: 1.5rem;
    }

    .contact-card {
        padding: 20px;
        width: 90%;
        max-width: 600px;
        border-radius: 12px;
    }

    .contact-title {
        font-size: 1.8rem;
    }

    .contact-description {
        font-size: 0.95rem;
    }

    .contact-detail-item {
        font-size: 0.95rem;
        gap: 0.6rem;
    }

    .contact-detail-item i {
        font-size: 1.1rem;
    }

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

    .footer {
        padding: 2rem 0;
    }

    .footer-content {
        flex-direction: column;
        gap: 1.5rem;
        text-align: center;
    }

    .footer-links {
        gap: 1.5rem;
    }

    .education-item {
        margin-bottom: 1.5rem;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 12px;
    }

    .logo a {
        font-size: 1.4rem;
    }

    .hero {
        padding: 120px 0 40px;
    }

    .hero-content {
        gap: 20px;
    }

    .hero-title {
        font-size: 24px;
        margin-bottom: 0.8rem;
        line-height: 1.2;
    }

    .hero-subtitle {
        font-size: 14px;
        margin-bottom: 1rem;
    }

    .hero-description {
        font-size: 14px;
        line-height: 1.6;
        margin-bottom: 1.5rem;
    }

    .code-snippet {
        width: 100%;
        border-radius: 10px;
        font-size: 11px;
    }

    .code-terminal-header {
        padding: 10px 12px;
        gap: 6px;
    }

    .terminal-circle {
        width: 10px;
        height: 10px;
    }

    .code-content {
        padding: 12px;
        line-height: 1.6;
    }

    .code-line.indent-1 {
        margin-left: 12px;
    }

    .hero::before {
        width: 250px;
        height: 250px;
        top: -30%;
        right: -15%;
    }

    .hero::after {
        width: 200px;
        height: 200px;
        bottom: -20%;
        left: -15%;
    }

    .hero-buttons {
        gap: 0.8rem;
        width: 100%;
    }

    .btn {
        padding: 10px 18px;
        font-size: 0.85rem;
        width: 100%;
        white-space: normal;
    }

    .btn-small {
        padding: 8px 14px;
        font-size: 0.75rem;
    }

    .social-links {
        gap: 1.2rem;
        margin-top: 1.5rem;
    }

    .social-link {
        font-size: 1.2rem;
    }

    section {
        padding: 40px 0;
    }

    .section-title {
        font-size: 1.3rem;
        margin-bottom: 2rem;
    }

    .section-title::after {
        width: 60px;
        height: 3px;
    }

    .about-card {
        padding: 1.5rem;
    }

    .about-description {
        font-size: 0.9rem;
        margin-bottom: 1rem;
        line-height: 1.6;
    }

    .about-location {
        font-size: 0.9rem;
        margin-top: 1rem;
    }

    .about-stats {
        gap: 0.8rem;
    }

    .stat {
        padding: 1.2rem;
    }

    .stat h3 {
        font-size: 1.6rem;
    }

    .stat p {
        font-size: 0.85rem;
    }

    .skill-category {
        padding: 1.2rem;
    }

    .skill-category-title {
        font-size: 1.1rem;
        margin-bottom: 1rem;
    }

    .skill-cards {
        grid-template-columns: 1fr;
        gap: 0.8rem;
    }

    .skill-card {
        padding: 1rem 0.8rem;
        font-size: 0.75rem;
    }

    .skill-card i {
        font-size: 1.3rem;
    }

    .project-card {
        padding: 1.2rem;
    }

    .project-header h3 {
        font-size: 1.2rem;
    }

    .project-description {
        font-size: 0.9rem;
        line-height: 1.5;
    }

    .project-links {
        flex-direction: column;
        gap: 0.8rem;
    }

    .project-links .btn {
        width: 100%;
    }

    .projects-coming-soon {
        padding: 1.2rem;
    }

    .projects-coming-soon h3 {
        font-size: 1.1rem;
    }

    .projects-coming-soon p {
        font-size: 0.9rem;
    }

    .achievement-card {
        padding: 1.2rem;
    }

    .achievement-rank {
        font-size: 0.85rem;
        padding: 0.5rem 1rem;
    }

    .achievement-card h3 {
        font-size: 1rem;
        margin-bottom: 0.5rem;
    }

    .achievement-card p {
        font-size: 0.8rem;
    }

    .certifications-list {
        gap: 1rem;
    }

    .certification-item {
        flex-direction: column;
        align-items: flex-start;
        padding: 1rem;
    }

    .cert-icon {
        font-size: 1.8rem;
    }

    .cert-content h3 {
        font-size: 1rem;
    }

    .cert-content p {
        font-size: 0.8rem;
    }

    .languages-grid {
        gap: 1.5rem;
    }

    .language-card {
        padding: 1.2rem;
    }

    .language-card h3 {
        font-size: 1rem;
    }

    .language-level {
        font-size: 0.85rem;
    }

    .proficiency-bar {
        height: 6px;
    }

    .contact-card {
        padding: 20px;
        width: 90%;
        max-width: 100%;
        border-radius: 15px;
    }

    .contact-title {
        font-size: 1.4rem;
        margin-bottom: 1rem;
    }

    .contact-description {
        font-size: 0.85rem;
        margin-bottom: 1.5rem;
        line-height: 1.6;
    }

    .contact-details {
        padding: 1rem;
        margin-bottom: 1.5rem;
    }

    .contact-detail-item {
        font-size: 0.85rem;
        margin: 0.6rem 0;
        gap: 0.5rem;
    }

    .contact-detail-item i {
        font-size: 1rem;
    }

    .contact-content {
        gap: 1.5rem;
    }

    .contact-form {
        gap: 0.8rem;
    }

    .form-group input,
    .form-group textarea {
        padding: 0.8rem;
        font-size: 0.9rem;
    }

    .footer {
        padding: 1.5rem 0;
    }

    .footer-content {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }

    .footer-content p {
        font-size: 0.85rem;
    }

    .footer-links {
        gap: 1.2rem;
    }

    .footer-links a {
        font-size: 1.2rem;
    }

    .education-item {
        margin-bottom: 1.2rem;
    }

    .education-header {
        flex-direction: column;
        gap: 0.5rem;
    }

    .year-badge {
        font-size: 0.75rem;
    }

    .institution {
        font-size: 0.85rem;
    }

    .education-details p {
        font-size: 0.85rem;
    }
}

/* ============================================
   ULTRA SMALL SCREENS (320px - 360px)
   ============================================ */

@media (max-width: 360px) {
    .container {
        padding: 0 8px;
    }

    .navbar {
        padding: 0.8rem 0;
    }

    .logo a {
        font-size: 1.2rem;
    }

    .hamburger span {
        width: 20px;
        height: 2px;
    }

    .hero {
        padding: 100px 0 30px;
        margin-top: 0;
    }

    .hero-content {
        gap: 15px;
    }

    .hero-title {
        font-size: 24px;
        margin-bottom: 0.5rem;
        line-height: 1.15;
        font-weight: 700;
    }

    .hero-subtitle {
        font-size: 14px;
        margin-bottom: 0.8rem;
    }

    .hero-description {
        font-size: 14px;
        line-height: 1.5;
        margin-bottom: 1.2rem;
    }

    .hero-buttons {
        gap: 0.6rem;
        width: 100%;
    }

    .btn {
        padding: 9px 14px;
        font-size: 0.8rem;
        width: 100%;
        min-height: 36px;
        white-space: normal;
    }

    .btn i {
        font-size: 0.7rem;
    }

    .btn-small {
        padding: 6px 12px;
        font-size: 0.7rem;
    }

    .social-links {
        gap: 1rem;
        margin-top: 1.2rem;
    }

    .social-link {
        font-size: 1rem;
        width: 40px;
        height: 40px;
        display: flex;
        align-items: center;
        justify-content: center;
    }

    .code-snippet {
        width: 100%;
        max-width: 100%;
        border-radius: 8px;
        font-size: 10px;
        padding: 0;
        margin-top: 1rem;
    }

    .code-terminal-header {
        padding: 8px 10px;
        gap: 4px;
    }

    .terminal-circle {
        width: 8px;
        height: 8px;
    }

    .code-content {
        padding: 10px;
        line-height: 1.4;
        overflow-x: auto;
    }

    .code-line {
        margin: 0.3rem 0;
        white-space: nowrap;
    }

    .code-line.indent-1 {
        margin-left: 10px;
    }

    .hero::before {
        width: 200px;
        height: 200px;
        top: -20%;
        right: -20%;
    }

    .hero::after {
        width: 150px;
        height: 150px;
        bottom: -15%;
        left: -20%;
    }

    .highlight {
        text-shadow: 0 0 10px rgba(0, 212, 255, 0.2);
    }

    section {
        padding: 30px 0;
    }

    .section-title {
        font-size: 1.1rem;
        margin-bottom: 1.5rem;
        font-weight: 700;
    }

    .section-title::after {
        width: 50px;
        height: 2px;
        bottom: -10px;
    }

    .about-card {
        padding: 1.2rem;
        border-radius: 12px;
    }

    .about-description {
        font-size: 0.8rem;
        margin-bottom: 0.8rem;
        line-height: 1.5;
    }

    .about-location {
        font-size: 0.8rem;
        margin-top: 0.8rem;
    }

    .about-location i {
        margin-right: 0.3rem;
    }

    .skill-category {
        padding: 1rem;
        margin-bottom: 1rem;
    }

    .skill-category-title {
        font-size: 1rem;
        margin-bottom: 0.8rem;
        font-weight: 600;
    }

    .skill-cards {
        grid-template-columns: 1fr;
        gap: 0.6rem;
    }

    .skill-card {
        padding: 0.8rem;
        font-size: 0.7rem;
        border-radius: 10px;
    }

    .skill-card i {
        font-size: 1.2rem;
        margin-bottom: 0.4rem;
    }

    .skill-card p {
        margin: 0;
    }

    .project-card {
        padding: 1rem;
        border-radius: 12px;
    }

    .project-header {
        gap: 0.5rem;
        margin-bottom: 0.8rem;
    }

    .project-header i {
        font-size: 1.3rem;
    }

    .project-header h3 {
        font-size: 1.1rem;
        margin: 0;
    }

    .project-description {
        font-size: 0.8rem;
        line-height: 1.5;
        margin-bottom: 0.8rem;
    }

    .tech-tag {
        font-size: 0.65rem;
        padding: 3px 8px;
        margin: 0.2rem 0.2rem 0.2rem 0;
    }

    .project-links {
        flex-direction: column;
        gap: 0.6rem;
    }

    .project-links .btn {
        width: 100%;
        padding: 8px 12px;
        font-size: 0.75rem;
    }

    .projects-coming-soon {
        padding: 1rem;
    }

    .projects-coming-soon h3 {
        font-size: 1rem;
        margin-bottom: 0.5rem;
    }

    .projects-coming-soon p {
        font-size: 0.8rem;
        margin: 0;
    }

    .achievement-card {
        padding: 1rem;
        border-radius: 10px;
    }

    .achievement-rank {
        font-size: 0.7rem;
        padding: 0.4rem 0.8rem;
    }

    .achievement-card h3 {
        font-size: 0.9rem;
        margin-bottom: 0.4rem;
    }

    .achievement-card p {
        font-size: 0.75rem;
        margin: 0;
    }

    .certification-item {
        padding: 0.8rem;
        gap: 0.8rem;
    }

    .cert-icon {
        font-size: 1.6rem;
        min-width: 40px;
    }

    .cert-content h3 {
        font-size: 0.9rem;
        margin-bottom: 0.3rem;
    }

    .cert-content p {
        font-size: 0.75rem;
        margin: 0;
    }

    .language-card {
        padding: 1rem;
    }

    .language-card h3 {
        font-size: 0.9rem;
        margin-bottom: 0.3rem;
    }

    .language-level {
        font-size: 0.75rem;
        margin-bottom: 0.5rem;
    }

    .proficiency-bar {
        height: 5px;
    }

    .contact-card {
        padding: 20px;
        width: 90%;
        max-width: 100%;
        border-radius: 12px;
        box-shadow: 0 10px 30px rgba(0, 212, 255, 0.1);
    }

    .contact-title {
        font-size: 1.2rem;
        margin-bottom: 0.8rem;
        font-weight: 700;
    }

    .contact-description {
        font-size: 0.8rem;
        margin-bottom: 1.2rem;
        line-height: 1.5;
    }

    .contact-details {
        padding: 0.8rem;
        margin-bottom: 1.2rem;
        border-radius: 8px;
    }

    .contact-detail-item {
        font-size: 0.8rem;
        margin: 0.5rem 0;
        gap: 0.4rem;
        flex-wrap: wrap;
    }

    .contact-detail-item i {
        font-size: 0.9rem;
    }

    .contact-detail-item strong {
        word-break: break-word;
    }

    .footer {
        padding: 1.2rem 0;
    }

    .footer-content {
        gap: 0.8rem;
    }

    .footer-content p {
        font-size: 0.75rem;
        margin: 0;
    }

    .footer-links {
        gap: 1rem;
    }

    .footer-links a {
        font-size: 1rem;
    }

    .education-item {
        margin-bottom: 1rem;
    }

    .education-header {
        gap: 0.3rem;
    }

    .education-header h3 {
        font-size: 0.95rem;
    }

    .year-badge {
        font-size: 0.7rem;
    }

    .institution {
        font-size: 0.8rem;
        margin: 0.3rem 0;
    }

    .education-details p {
        font-size: 0.8rem;
        margin: 0;
    }

    .nav-menu {
        padding: 1rem;
    }

    .nav-link {
        padding: 0.7rem 0;
        font-size: 0.9rem;
    }
}