/* ===== CSS Variables ===== */
:root {
    --primary-color: #3b82f6;
    --primary-dark: #1d4ed8;
    --primary-light: #60a5fa;
    --secondary-color: #1e3a5f;
    --accent-color: #06b6d4;
    --text-color: #1e293b;
    --text-light: #475569;
    --text-lighter: #64748b;
    --bg-color: #f0f9ff;
    --bg-secondary: rgba(255, 255, 255, 0.7);
    --bg-dark: #0c1929;
    --border-color: rgba(59, 130, 246, 0.2);
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow: 0 4px 6px -1px rgba(59, 130, 246, 0.15), 0 2px 4px -1px rgba(59, 130, 246, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(59, 130, 246, 0.2), 0 4px 6px -2px rgba(59, 130, 246, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(59, 130, 246, 0.2), 0 10px 10px -5px rgba(59, 130, 246, 0.1);
    --transition: all 0.3s ease;
    --border-radius: 12px;
    --border-radius-lg: 20px;
}

/* ===== Reset & Base Styles ===== */
*,
*::before,
*::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    font-size: 16px;
    line-height: 1.6;
    color: var(--text-color);
    background: linear-gradient(135deg, #667eea 0%, #764ba2 50%, #6B8DD6 100%);
    background-attachment: fixed;
    overflow-x: hidden;
    position: relative;
}

/* Animated Background Overlay */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        radial-gradient(ellipse at 20% 20%, rgba(120, 180, 255, 0.3) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 80%, rgba(100, 120, 255, 0.25) 0%, transparent 50%),
        radial-gradient(ellipse at 40% 60%, rgba(150, 100, 255, 0.2) 0%, transparent 40%),
        radial-gradient(ellipse at 60% 30%, rgba(80, 200, 255, 0.15) 0%, transparent 45%);
    pointer-events: none;
    z-index: 0;
    animation: gradientShift 15s ease-in-out infinite alternate;
}

@keyframes gradientShift {
    0% {
        opacity: 1;
        transform: scale(1) rotate(0deg);
    }
    50% {
        opacity: 0.8;
        transform: scale(1.1) rotate(2deg);
    }
    100% {
        opacity: 1;
        transform: scale(1) rotate(0deg);
    }
}

/* Ensure content is above background */
.navbar, .hero, .section, .footer {
    position: relative;
    z-index: 1;
}

h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.2;
    color: var(--secondary-color);
}

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

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

ul {
    list-style: none;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 40px;
}

.section {
    padding: 100px 0;
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

.section.alt-bg {
    background: rgba(240, 249, 255, 0.9);
}

.section-title {
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: 1rem;
    position: relative;
    color: var(--secondary-color);
}

.section-title::after {
    content: '';
    display: block;
    width: 60px;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), var(--accent-color));
    margin: 1rem auto 0;
    border-radius: 2px;
    box-shadow: 0 2px 10px rgba(59, 130, 246, 0.4);
}

.section-subtitle {
    text-align: center;
    color: var(--text-light);
    font-size: 1.1rem;
    margin-bottom: 3rem;
}

/* ===== Buttons ===== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.875rem 1.75rem;
    border-radius: 50px;
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    transition: var(--transition);
    border: none;
    outline: none;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: white;
    box-shadow: 0 4px 15px rgba(99, 102, 241, 0.4);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(99, 102, 241, 0.5);
}

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

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

/* ===== Navigation ===== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    padding: 1.5rem 0;
    transition: var(--transition);
    background: transparent;
}

.navbar.scrolled {
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    box-shadow: 0 4px 30px rgba(59, 130, 246, 0.15);
    padding: 1rem 0;
}

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

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: white;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
}

.navbar.scrolled .logo {
    color: var(--secondary-color);
    text-shadow: none;
}

.logo span {
    color: var(--accent-color);
}

.navbar.scrolled .logo span {
    color: var(--primary-color);
}

.nav-links {
    display: flex;
    gap: 2rem;
}

.nav-links a {
    font-weight: 500;
    color: rgba(255, 255, 255, 0.9);
    position: relative;
    padding: 0.5rem 0;
    text-shadow: 0 1px 3px rgba(0, 0, 0, 0.2);
}

.navbar.scrolled .nav-links a {
    color: var(--text-color);
    text-shadow: none;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--accent-color);
    transition: var(--transition);
}

.navbar.scrolled .nav-links a::after {
    background: var(--primary-color);
}

.nav-links a:hover::after,
.nav-links a.active::after {
    width: 100%;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 5px;
}

.hamburger,
.hamburger::before,
.hamburger::after {
    display: block;
    width: 25px;
    height: 3px;
    background: var(--secondary-color);
    border-radius: 3px;
    transition: var(--transition);
}

.hamburger::before,
.hamburger::after {
    content: '';
}

.hamburger::before {
    transform: translateY(-8px);
}

.hamburger::after {
    transform: translateY(5px);
}

/* ===== Hero Section ===== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
    padding-top: 80px;
    background: transparent;
}

.hero-background {
    position: absolute;
    inset: 0;
    z-index: -1;
}

.gradient-sphere {
    position: absolute;
    border-radius: 50%;
    filter: blur(100px);
    opacity: 0.6;
    animation: floatSphere 8s ease-in-out infinite;
}

@keyframes floatSphere {
    0%, 100% { transform: translate(0, 0) scale(1); }
    50% { transform: translate(30px, -30px) scale(1.1); }
}

.sphere-1 {
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(96, 165, 250, 0.4) 0%, rgba(59, 130, 246, 0.2) 50%, transparent 70%);
    top: -200px;
    right: -200px;
    animation-delay: 0s;
}

.sphere-2 {
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(6, 182, 212, 0.4) 0%, rgba(59, 130, 246, 0.2) 50%, transparent 70%);
    bottom: -100px;
    left: -100px;
    animation-delay: -4s;
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 8rem;
    align-items: center;
    max-width: 1600px;
    margin: 0 auto;
    padding: 0 60px;
}

.hero-greeting {
    font-size: 1.25rem;
    color: rgba(255, 255, 255, 0.9);
    font-weight: 500;
    margin-bottom: 0.5rem;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
}

.hero-name {
    font-family: 'Playfair Display', serif;
    font-size: 4.5rem;
    margin-bottom: 0.5rem;
    color: white;
    text-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

.hero-title {
    font-size: 1.5rem;
    color: rgba(255, 255, 255, 0.85);
    font-weight: 400;
    margin-bottom: 1.5rem;
    min-height: 2rem;
}

.typing-text {
    color: var(--accent-color);
    font-weight: 600;
}

.cursor {
    animation: blink 1s infinite;
    color: var(--accent-color);
}

@keyframes blink {
    0%, 50% { opacity: 1; }
    51%, 100% { opacity: 0; }
}

.hero-description {
    font-size: 1.1rem;
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: 2rem;
    max-width: 600px;
    text-shadow: 0 1px 3px rgba(0, 0, 0, 0.2);
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    margin-bottom: 2rem;
    flex-wrap: wrap;
}

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

.hero-social a {
    width: 45px;
    height: 45px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.95);
    border: none;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary-color);
    font-size: 1.2rem;
    transition: var(--transition);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.15);
}

.hero-social a:hover {
    background: var(--primary-color);
    color: white;
    transform: translateY(-3px);
    box-shadow: 0 10px 30px rgba(59, 130, 246, 0.4);
}

.hero-image {
    display: flex;
    justify-content: center;
}

.image-wrapper {
    position: relative;
    width: 450px;
    height: 450px;
}

.image-wrapper::before {
    content: '';
    position: absolute;
    inset: -5px;
    background: linear-gradient(135deg, rgba(255,255,255,0.5), rgba(255,255,255,0.1));
    border-radius: 50%;
    z-index: -1;
}

.profile-placeholder {
    width: 100%;
    height: 100%;
    border-radius: 50%;
    background: linear-gradient(135deg, rgba(255,255,255,0.9), rgba(240,249,255,0.9));
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 8rem;
    color: var(--primary-light);
    border: 4px solid rgba(255, 255, 255, 0.8);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
}

.profile-placeholder.large {
    width: 350px;
    height: 350px;
    font-size: 6rem;
}

.image-wrapper img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 50%;
    border: 4px solid white;
    box-shadow: var(--shadow-xl);
}

.scroll-indicator {
    position: absolute;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    color: rgba(255, 255, 255, 0.8);
    font-size: 0.875rem;
    animation: bounce 2s infinite;
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% { transform: translateX(-50%) translateY(0); }
    40% { transform: translateX(-50%) translateY(-10px); }
    60% { transform: translateX(-50%) translateY(-5px); }
}

/* ===== About Section ===== */
.about {
    background: var(--bg-secondary);
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 4rem;
    align-items: center;
}

.image-frame {
    position: relative;
}

.image-frame::before {
    content: '';
    position: absolute;
    top: -20px;
    left: -20px;
    width: 100%;
    height: 100%;
    border: 4px solid var(--primary-color);
    border-radius: var(--border-radius-lg);
    z-index: -1;
}

.image-frame img {
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-xl);
}

.about-text h3 {
    font-size: 1.75rem;
    margin-bottom: 1rem;
    color: var(--primary-color);
}

.about-text p {
    margin-bottom: 1rem;
    color: var(--text-light);
}

.about-stats {
    display: flex;
    gap: 2rem;
    margin: 2rem 0;
}

.stat {
    text-align: center;
}

.stat-number {
    display: block;
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary-color);
}

.stat-label {
    font-size: 0.875rem;
    color: var(--text-light);
}

/* ===== Skills Section ===== */
.skills-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.skill-category {
    background: var(--bg-secondary);
    border-radius: var(--border-radius-lg);
    padding: 2rem;
    transition: var(--transition);
}

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

.skill-category h3 {
    font-size: 1.25rem;
    margin-bottom: 1.5rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    color: var(--primary-color);
}

.skill-items {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
}

.skill-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    background: white;
    padding: 0.75rem 1rem;
    border-radius: 50px;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-color);
    transition: var(--transition);
    box-shadow: var(--shadow-sm);
}

.skill-item i {
    font-size: 1.25rem;
    color: var(--primary-color);
}

.skill-item:hover {
    background: var(--primary-color);
    color: white;
}

.skill-item:hover i {
    color: white;
}

.skill-description {
    color: #b8c5d6;
    font-size: 0.9rem;
    margin-top: 1rem;
    line-height: 1.6;
    font-style: italic;
}

/* ===== Education Section ===== */
.education-timeline {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
    width: 100%;
}

.education-card {
    display: flex;
    gap: 1.5rem;
    background: var(--bg-secondary);
    padding: 2rem;
    border-radius: var(--border-radius-lg);
    transition: var(--transition);
    border-left: 4px solid var(--primary-color);
}

.education-card:hover {
    transform: translateX(10px);
    box-shadow: var(--shadow-lg);
}

.edu-icon {
    width: 60px;
    height: 60px;
    min-width: 60px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.5rem;
}

.edu-content h3 {
    font-size: 1.25rem;
    margin-bottom: 0.5rem;
    color: var(--secondary-color);
}

.edu-degree {
    color: var(--primary-color);
    font-weight: 500;
    margin-bottom: 0.5rem;
}

.edu-date {
    color: var(--text-light);
    font-size: 0.875rem;
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.edu-skills {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 0.75rem;
}

.edu-skills span {
    padding: 0.25rem 0.75rem;
    background: white;
    border-radius: 50px;
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--primary-color);
    border: 1px solid var(--border-color);
}

.edu-activity {
    color: var(--text-light);
    font-size: 0.875rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.alt-bg {
    background: var(--bg-secondary);
}

.skills.alt-bg .skill-category {
    background: white;
}

/* ===== Experience Section ===== */
.experience-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
}

.experience-card {
    background: white;
    border-radius: var(--border-radius-lg);
    padding: 2rem;
    position: relative;
    transition: var(--transition);
    box-shadow: var(--shadow);
}

.experience-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-xl);
}

.experience-card.featured {
    grid-column: span 2;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: white;
}

.experience-card.featured h3,
.experience-card.featured .exp-org,
.experience-card.featured .exp-date,
.experience-card.featured .exp-desc {
    color: white;
}

.experience-card.featured .exp-org {
    opacity: 0.9;
}

.experience-card.featured .exp-date,
.experience-card.featured .exp-desc {
    opacity: 0.85;
}

.experience-card.featured .exp-icon {
    background: rgba(255, 255, 255, 0.2);
}

.experience-card.featured .exp-badge {
    background: rgba(255, 255, 255, 0.2);
    color: white;
}

.experience-card.featured .exp-tags span {
    background: rgba(255, 255, 255, 0.2);
    color: white;
    border-color: rgba(255, 255, 255, 0.3);
}

.exp-icon {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary-light), var(--primary-color));
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.25rem;
    margin-bottom: 1rem;
}

.exp-badge {
    position: absolute;
    top: 1.5rem;
    right: 1.5rem;
    padding: 0.25rem 0.75rem;
    background: var(--bg-secondary);
    border-radius: 50px;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--primary-color);
}

.experience-card h3 {
    font-size: 1.25rem;
    margin-bottom: 0.5rem;
}

.exp-org {
    color: var(--primary-color);
    font-weight: 500;
    margin-bottom: 0.25rem;
}

.exp-date {
    color: var(--text-light);
    font-size: 0.875rem;
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.exp-desc {
    color: var(--text-light);
    margin-bottom: 1rem;
    line-height: 1.6;
}

.exp-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.exp-tags span {
    padding: 0.25rem 0.75rem;
    background: var(--bg-secondary);
    border-radius: 50px;
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--text-color);
    border: 1px solid var(--border-color);
}

/* ===== Projects Section ===== */
.projects {
    background: var(--bg-secondary);
}

.project-filters {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-bottom: 3rem;
    flex-wrap: wrap;
}

.filter-btn {
    padding: 0.625rem 1.5rem;
    border: none;
    background: white;
    border-radius: 50px;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    color: var(--text-color);
}

.filter-btn:hover,
.filter-btn.active {
    background: var(--primary-color);
    color: white;
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.project-card {
    background: white;
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.project-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-xl);
}

.project-image {
    position: relative;
    height: 220px;
    overflow: hidden;
}

.project-placeholder {
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--primary-light), var(--accent-color));
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 4rem;
    color: white;
}

.project-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

.project-card:hover .project-image img {
    transform: scale(1.1);
}

.project-overlay {
    position: absolute;
    inset: 0;
    background: rgba(99, 102, 241, 0.9);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: var(--transition);
}

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

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

.project-link {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: white;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary-color);
    font-size: 1.25rem;
    transform: translateY(20px);
    transition: var(--transition);
}

.project-card:hover .project-link {
    transform: translateY(0);
}

.project-link:hover {
    background: var(--secondary-color);
    color: white;
}

.project-info {
    padding: 1.5rem;
}

.project-info h3 {
    font-size: 1.25rem;
    margin-bottom: 0.5rem;
}

.project-info p {
    color: var(--text-light);
    font-size: 0.875rem;
    margin-bottom: 1rem;
}

.project-tech {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.project-tech span {
    padding: 0.25rem 0.75rem;
    background: var(--bg-secondary);
    border-radius: 50px;
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--primary-color);
}

/* ===== Contact Section ===== */
.contact-content {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 4rem;
}

.contact-item {
    display: flex;
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.contact-icon {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.5rem;
    flex-shrink: 0;
}

.contact-details h3 {
    font-size: 1.1rem;
    margin-bottom: 0.25rem;
}

.contact-details p {
    color: var(--text-light);
}

.contact-social {
    display: flex;
    gap: 1rem;
    margin-top: 2rem;
}

.contact-social a {
    width: 45px;
    height: 45px;
    border-radius: 50%;
    background: var(--bg-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-color);
    font-size: 1.2rem;
    transition: var(--transition);
}

.contact-social a:hover {
    background: var(--primary-color);
    color: white;
    transform: translateY(-3px);
}

.contact-form {
    background: var(--bg-secondary);
    padding: 2.5rem;
    border-radius: var(--border-radius-lg);
}

.form-group {
    position: relative;
    margin-bottom: 1.5rem;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 1rem;
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    font-family: inherit;
    font-size: 1rem;
    background: white;
    transition: var(--transition);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
}

.form-group label {
    position: absolute;
    left: 1rem;
    top: 1rem;
    color: var(--text-light);
    pointer-events: none;
    transition: var(--transition);
    background: white;
    padding: 0 0.25rem;
}

.form-group input:focus ~ label,
.form-group input:valid ~ label,
.form-group textarea:focus ~ label,
.form-group textarea:valid ~ label {
    top: -0.5rem;
    font-size: 0.875rem;
    color: var(--primary-color);
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

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

/* ===== Footer ===== */
.footer {
    background: linear-gradient(135deg, #1e3a5f 0%, #0c1929 100%);
    color: white;
    padding: 3rem 0;
    border-top: 1px solid rgba(59, 130, 246, 0.3);
}

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

.footer-logo {
    font-size: 1.5rem;
    font-weight: 700;
}

.footer-logo span {
    color: var(--accent-color);
}

.footer-content p {
    color: rgba(255, 255, 255, 0.6);
}

.footer-links {
    display: flex;
    gap: 2rem;
}

.footer-links a {
    color: rgba(255, 255, 255, 0.7);
}

.footer-links a:hover {
    color: var(--accent-color);
}

/* ===== Back to Top Button ===== */
.back-to-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: var(--primary-color);
    color: white;
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    box-shadow: var(--shadow-lg);
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: var(--transition);
    z-index: 999;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.back-to-top:hover {
    background: var(--primary-dark);
    transform: translateY(-3px);
}

/* ===== Responsive Design ===== */
@media (max-width: 1024px) {
    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 3rem;
    }

    .hero-text {
        order: 2;
    }

    .hero-image {
        order: 1;
    }

    .hero-description {
        margin: 0 auto 2rem;
    }

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

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

    .image-wrapper {
        width: 300px;
        height: 300px;
    }

    .about-content {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .about-image {
        display: flex;
        justify-content: center;
    }

    .image-frame::before {
        display: none;
    }

    .about-stats {
        justify-content: center;
    }

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

    .projects-grid {
        grid-template-columns: repeat(2, 1fr);
    }

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

    .experience-card.featured {
        grid-column: span 1;
    }

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

@media (max-width: 768px) {
    .nav-toggle {
        display: flex;
    }

    .hamburger,
    .hamburger::before,
    .hamburger::after {
        background: white;
    }

    .navbar.scrolled .hamburger,
    .navbar.scrolled .hamburger::before,
    .navbar.scrolled .hamburger::after {
        background: var(--secondary-color);
    }

    .nav-links {
        position: fixed;
        top: 0;
        right: -100%;
        width: 70%;
        max-width: 300px;
        height: 100vh;
        background: linear-gradient(135deg, #1e3a5f 0%, #0c1929 100%);
        flex-direction: column;
        padding: 6rem 2rem 2rem;
        gap: 1.5rem;
        box-shadow: -10px 0 40px rgba(0, 0, 0, 0.3);
        transition: var(--transition);
    }

    .nav-links a {
        color: white !important;
        font-size: 1.1rem;
        text-shadow: none !important;
        padding: 0.75rem 0;
        border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    }

    .nav-links a:hover {
        color: var(--accent-color) !important;
    }

    .nav-links a::after {
        display: none;
    }

    .nav-links.active {
        right: 0;
    }

    .hero-content {
        padding: 0 20px;
        gap: 2rem;
    }

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

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

    .section {
        padding: 60px 0;
    }

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

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

    .about-stats {
        flex-wrap: wrap;
    }

    .contact-form {
        padding: 1.5rem;
    }

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

    .education-card {
        flex-direction: column;
        text-align: center;
    }

    .edu-icon {
        margin: 0 auto;
    }

    .edu-date {
        justify-content: center;
    }

    .edu-skills {
        justify-content: center;
    }

    .container {
        padding: 0 20px;
    }

    .edu-activity {
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .hero-name {
        font-size: 2.5rem;
    }

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

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

    .image-wrapper {
        width: 250px;
        height: 250px;
    }

    .profile-placeholder {
        font-size: 5rem;
    }

    .profile-placeholder.large {
        width: 250px;
        height: 250px;
        font-size: 4rem;
    }
}

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

.fade-in-up {
    animation: fadeInUp 0.6s ease forwards;
}

/* ===== Selection ===== */
::selection {
    background: var(--primary-color);
    color: white;
}

/* ===== Scrollbar ===== */
::-webkit-scrollbar {
    width: 10px;
}

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

::-webkit-scrollbar-thumb {
    background: var(--primary-color);
    border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--primary-dark);
}