:root {
    --bg-color: #0a0a0a;
    --card-bg: #111111;
    --text-primary: #ffffff;
    --text-secondary: #a0a0a0;
    --accent-color: #00f3ff;
    /* Cyan */
    --accent-secondary: #7000ff;
    /* Purple */
    --gradient-primary: linear-gradient(135deg, var(--accent-color), var(--accent-secondary));
    --font-main: 'Outfit', sans-serif;
    --border-radius: 12px;
    --transition: all 0.3s ease;
}

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

body {
    background-color: var(--bg-color);
    color: var(--text-primary);
    font-family: var(--font-main);
    line-height: 1.6;
    overflow-x: hidden;
}

/* Scrollbar */
::-webkit-scrollbar {
    width: 8px;
}

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

::-webkit-scrollbar-thumb {
    background: #333;
    border-radius: 4px;
}

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

.profile-image {
    width: 140px;
    height: 140px;
    margin: 0 auto 10px auto;
    border-radius: 50%;
    overflow: hidden;
    border: 1px solid var(--accent-color);
    box-shadow: 0 0 25px rgba(0,0,0,0.3);
}

.profile-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* Custom Cursor Glow */
.cursor-glow {
    position: fixed;
    top: 0;
    left: 0;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(0, 243, 255, 0.15), transparent 70%);
    pointer-events: none;
    z-index: 9999;
    transform: translate(-50%, -50%);
    mix-blend-mode: screen;
}

/* Utility / Typography */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

h1,
h2,
h3 {
    font-weight: 700;
    color: var(--text-primary);
}

.section-title {
    font-size: 2.5rem;
    margin-bottom: 3rem;
    text-align: center;
    position: relative;
    display: inline-block;
    left: 50%;
    transform: translateX(-50%);
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 0;
    width: 60px;
    height: 4px;
    background: var(--gradient-primary);
    border-radius: 2px;
}

.accent {
    color: var(--accent-color);
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.btn-primary,
.btn-secondary {
    display: inline-block;
    padding: 0.8rem 2rem;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition);
    cursor: pointer;
    border: none;
    font-size: 1rem;
}

.btn-primary {
    background: var(--gradient-primary);
    color: #fff;
    box-shadow: 0 0 20px rgba(0, 243, 255, 0.3);
}

.btn-primary:hover {
    box-shadow: 0 0 30px rgba(0, 243, 255, 0.5);
    transform: translateY(-2px);
}

.btn-secondary {
    background: transparent;
    border: 2px solid var(--accent-color);
    color: var(--accent-color);
    margin-left: 1rem;
}

.btn-secondary:hover {
    background: rgba(0, 243, 255, 0.1);
    transform: translateY(-2px);
}

/* Navbar */
.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem 5%;
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    background: rgba(10, 10, 10, 0.8);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

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

.nav-links a {
    color: var(--text-secondary);
    text-decoration: none;
    margin-left: 2rem;
    font-weight: 500;
    transition: var(--transition);
}

.nav-links a:hover,
.nav-links a.active {
    color: var(--accent-color);
}

/* Hero Section */
.hero {
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    background:
        radial-gradient(circle at 10% 20%, rgba(112, 0, 255, 0.1) 0%, transparent 40%),
        radial-gradient(circle at 90% 80%, rgba(0, 243, 255, 0.1) 0%, transparent 40%);
}

.grid-overlay {
    position: absolute;
    width: 100%;
    height: 100%;
    background-image: linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
    background-size: 50px 50px;
    mask-image: radial-gradient(circle, black 40%, transparent 80%);
}

.hero-content {
    z-index: 1;
    max-width: 800px;
    padding: 0 2rem;
}

.hero .subtitle {
    color: var(--accent-color);
    font-size: 1.2rem;
    font-weight: 600;
    letter-spacing: 2px;
    text-transform: uppercase;
    display: block;
    margin-bottom: 1rem;
}

.hero h1 {
    font-size: 4.5rem;
    margin-bottom: 1rem;
    line-height: 1.1;
}

.hero .role {
    font-size: 2rem;
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    font-weight: 400;
}

.hero .description {
    color: var(--text-secondary);
    font-size: 1.1rem;
    max-width: 600px;
    margin: 0 auto 2.5rem;
}

/* About Section */
.section {
    padding: 6rem 0;
}

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

.about-text p {
    color: var(--text-secondary);
    margin-bottom: 2rem;
    font-size: 1.1rem;
}

.about-details {
    list-style: none;
}

.about-details li {
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    color: var(--text-primary);
    font-weight: 500;
}

.about-details i {
    color: var(--accent-color);
    margin-right: 1rem;
    font-size: 1.2rem;
}

.code-block {
    background: var(--card-bg);
    padding: 2rem;
    border-radius: var(--border-radius);
    border: 1px solid rgba(255, 255, 255, 0.05);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
    font-family: 'Fira Code', monospace;
    color: #a0a0a0;
    font-size: 0.9rem;
    position: relative;
    overflow: hidden;
}

.code-block::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: var(--gradient-primary);
}

/* Stats Section */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.stat-card {
    background: var(--card-bg);
    padding: 2.5rem;
    border-radius: var(--border-radius);
    border: 1px solid rgba(255, 255, 255, 0.05);
    transition: var(--transition);
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    min-height: 400px;
    position: relative;
    overflow: hidden;
}

.stat-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: var(--gradient-primary);
    opacity: 0;
    transition: var(--transition);
}

.stat-card:hover::before {
    opacity: 1;
}

.stat-card:hover {
    transform: translateY(-5px);
    border-color: var(--accent-secondary);
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.5);
}

.stat-header {
    display: flex;
    align-items: center;
    margin-bottom: 2rem;
    color: var(--text-primary);
}

.stat-header i {
    font-size: 2.5rem;
    margin-right: 1rem;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.stat-header h3 {
    font-size: 1.8rem;
    color: var(--text-primary);
}

.stat-details {
    display: flex;
    justify-content: space-around;
    width: 100%;
    margin-bottom: 2rem;
}

.stat-item {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--text-primary);
    line-height: 1;
    margin-bottom: 0.5rem;
}

.stat-label {
    font-size: 0.9rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.stat-link {
    margin-top: auto;
    color: var(--accent-color);
    text-decoration: none;
    font-weight: 600;
    border: 1px solid var(--accent-color);
    padding: 0.8rem 2rem;
    border-radius: 50px;
    transition: var(--transition);
    min-width: 180px;
}

.stat-link:hover {
    background: rgba(0, 243, 255, 0.1);
    box-shadow: 0 0 20px rgba(0, 243, 255, 0.2);
}

.contribution-graph {
    width: 100%;
    margin-bottom: 1.5rem;
    border-radius: 8px;
    overflow: hidden;
}

.streak-stats {
    width: 100%;
    margin-top: 1rem;
    border-radius: 8px;
    overflow: hidden;
}

/* LeetCode Circular Progress */
.leetcode-circles {
    display: flex;
    justify-content: center;
    gap: 1.5rem;
    width: 100%;
    margin-bottom: 2rem;
    flex-wrap: wrap;
}

.circle-progress {
    width: 100px;
    height: 100px;
    border-radius: 50%;
    background: conic-gradient(var(--color) var(--percent), #222 0);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    box-shadow: 0 0 15px rgba(0, 0, 0, 0.3);
}

.circle-inner {
    width: 85px;
    height: 85px;
    background: var(--card-bg);
    border-radius: 50%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    z-index: 1;
}

.circle-count {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--text-primary);
}

.circle-label {
    font-size: 0.7rem;
    color: var(--text-secondary);
    text-transform: uppercase;
}

/* Achievement Section */
.achievements-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
}

.achievement-card {
    background: var(--card-bg);
    padding: 1.5rem;
    border-radius: 12px;
    border: 1px solid rgba(255,255,255,0.05);
    text-align: center;
    transition: transform 0.3s ease;
}

.achievement-card:hover {
    transform: translateY(-5px);
}

.achievement-card i {
    font-size: 2rem;
    color: var(--accent-color);
    margin-bottom: 10px;
}

/* Certifications Section */
.certifications-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 1.5rem;
}

.cert-card {
    background: var(--card-bg);
    border-radius: 12px;
    padding: 1rem;
    text-align: center;
    border: 1px solid rgba(255,255,255,0.05);
    transition: transform 0.3s ease;
}

.cert-card:hover {
    transform: translateY(-5px);
}

.cert-card img {
    width: 100%;
    border-radius: 8px;
    margin-bottom: 10px;
}

.cert-card h3 {
    margin: 10px 0 5px;
}

.cert-btn {
    display: inline-block;
    margin-top: 10px;
    padding: 6px 12px;
    border: 1px solid var(--accent-color);
    color: var(--accent-color);
    border-radius: 6px;
    text-decoration: none;
    font-size: 0.9rem;
}

/* Skills Section */
.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.skills-subtitle {
    font-size: 1.4rem;
    margin: 30px 0 20px;
    color: var(--accent-color);
}

.skill-category {
    background: var(--card-bg);
    padding: 2rem;
    border-radius: var(--border-radius);
    border: 1px solid rgba(255, 255, 255, 0.05);
    transition: var(--transition);
}

.skill-category:hover {
    transform: translateY(-5px);
    border-color: var(--accent-color);
    box-shadow: 0 10px 30px rgba(0, 243, 255, 0.1);
}

.skill-category h3 {
    margin-bottom: 1.5rem;
    color: var(--accent-color);
    font-size: 1.2rem;
}

.skill-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.8rem;
}

.skill-tags span {
    background: rgba(255, 255, 255, 0.05);
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.9rem;
    color: var(--text-secondary);
    transition: var(--transition);
}

.skill-category:hover .skill-tags span {
    background: rgba(0, 243, 255, 0.1);
    color: var(--text-primary);
}

/* Projects Section */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 2.5rem;
    perspective: 1000px;
    /* Essential for 3D effect */
}

.project-card {
    background: var(--card-bg);
    border-radius: var(--border-radius);
    overflow: hidden;
    border: 1px solid rgba(255, 255, 255, 0.05);
    transition: transform 0.1s ease, box-shadow 0.3s ease;
    /* Faster transition for tilt */
    height: 100%;
    display: flex;
    flex-direction: column;
    transform-style: preserve-3d;
    will-change: transform;
}

.project-card:hover {
    /* transform is handled by JS now */
    border-color: var(--accent-secondary);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
}


.project-content {
    padding: 1.5rem;
    flex-grow: 1;
    display: flex;
    flex-direction: column;
}

.project-title {
    font-size: 1.4rem;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.project-desc {
    color: var(--text-secondary);
    font-size: 0.95rem;
    margin-bottom: 1.5rem;
    flex-grow: 1;
}

.project-tech {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
}

.project-tech span {
    font-size: 0.8rem;
    color: var(--accent-color);
    background: rgba(0, 243, 255, 0.05);
    padding: 0.3rem 0.8rem;
    border-radius: 4px;
}

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

.project-links a {
    color: var(--text-primary);
    text-decoration: none;
    font-size: 1.2rem;
    transition: var(--transition);
}

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

/* Contact Section */
.contact-wrapper {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    background: var(--card-bg);
    padding: 3rem;
    border-radius: var(--border-radius);
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.contact-item {
    display: flex;
    align-items: center;
    margin-bottom: 1.5rem;
}

.contact-item i {
    font-size: 1.5rem;
    color: var(--accent-color);
    margin-right: 1.5rem;
    width: 40px;
    text-align: center;
}

.contact-form input,
.contact-form textarea {
    width: 100%;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 8px;
    padding: 1rem;
    color: var(--text-primary);
    margin-bottom: 1rem;
    font-family: var(--font-main);
    transition: var(--transition);
}

.contact-form input:focus,
.contact-form textarea:focus {
    outline: none;
    border-color: var(--accent-color);
    background: rgba(0, 243, 255, 0.02);
}

/* Timeline Section */
.timeline-container {
    position: relative;
    max-width: 1000px;
    margin: 0 auto;
    padding: 2rem 0;
}

.timeline {
    position: relative;
    max-width: 1200px;
    margin: 0 auto;
}

/* Vertical Line */
.timeline::after {
    content: '';
    position: absolute;
    width: 2px;
    background: var(--gradient-primary);
    top: 0;
    bottom: 0;
    left: 50%;
    margin-left: -1px;
    box-shadow: 0 0 10px rgba(0, 243, 255, 0.5);
}

.timeline-item {
    padding: 10px 40px;
    position: relative;
    background-color: inherit;
    width: 50%;
    opacity: 0;
    /* For animation */
    transform: translateY(20px);
    transition: all 0.6s ease;
}

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

.timeline-item::after {
    content: '';
    position: absolute;
    width: 20px;
    height: 20px;
    right: -10px;
    background-color: var(--bg-color);
    border: 3px solid var(--accent-color);
    top: 20px;
    border-radius: 50%;
    z-index: 1;
    box-shadow: 0 0 10px var(--accent-color);
}

.left {
    left: 0;
}

.right {
    left: 50%;
}

.right::after {
    left: -10px;
}

.timeline-content {
    background: var(--card-bg);
    padding: 20px 30px;
    border-radius: var(--border-radius);
    border: 1px solid rgba(255, 255, 255, 0.05);
    position: relative;
    transition: var(--transition);
}

.timeline-content:hover {
    transform: translateY(-5px);
    border-color: var(--accent-color);
    box-shadow: 0 10px 30px rgba(0, 243, 255, 0.1);
}

.timeline-content .date {
    color: var(--accent-color);
    font-size: 0.9rem;
    font-weight: 600;
    display: block;
    margin-bottom: 0.5rem;
}

.timeline-content h4 {
    margin-bottom: 0.5rem;
    font-size: 1.2rem;
}

.timeline-content p {
    color: var(--text-secondary);
    font-size: 0.95rem;
    margin-bottom: 0.5rem;
}

.timeline-content .highlight {
    color: var(--accent-color);
    font-weight: 600;
    margin-top: 0.5rem;
}

/* Responsive Timeline */
@media (max-width: 768px) {
    .timeline::after {
        left: 31px;
    }

    .timeline-item {
        width: 100%;
        padding-left: 70px;
        padding-right: 25px;
    }

    .timeline-item::after {
        left: 21px;
    }

    .right {
        left: 0%;
    }
}

/* Footer */
.footer {
    padding: 2rem 5%;
    text-align: center;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    color: var(--text-secondary);
}

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

.social-links a {
    color: var(--text-secondary);
    margin: 0 1rem;
    font-size: 1.2rem;
    transition: var(--transition);
}

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

/* LeetCode Contribution Calendar */
.leetcode-calendar-container {
    width: 100%;
    margin-top: 2rem;
    overflow-x: auto;
    background: #0d1117;
    /* Match GitHub dark bg */
    border-radius: 8px;
    padding: 1rem;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

.calendar-wrapper {
    display: flex;
    gap: 3px;
}

.calendar-week {
    display: flex;
    flex-direction: column;
    gap: 3px;
}

.calendar-day {
    width: 10px;
    height: 10px;
    border-radius: 2px;
    background-color: #161b22;
    /* Empty day color */
    transition: var(--transition);
}

.calendar-day:hover {
    transform: scale(1.2);
    box-shadow: 0 0 5px rgba(255, 255, 255, 0.2);
}

.calendar-day.level-1 {
    background-color: #0e4429;
}

.calendar-day.level-2 {
    background-color: #006d32;
}

.calendar-day.level-3 {
    background-color: #26a641;
}

.calendar-day.level-4 {
    background-color: #39d353;
}



/* Responsive */
@media (max-width: 768px) {
    .hero h1 {
        font-size: 3rem;
    }

    .nav-links {
        display: none;
    }

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

    .navbar {
        padding: 1rem 5%;
    }

    .btn-secondary {
        margin-left: 0;
        margin-top: 0.5rem;
        display: block;
        text-align: center;
    }
}

/* --- Admin Panel Styles --- */

.admin-container {
    max-width: 1200px;
    margin: 100px auto;
    padding: 2rem;
}

.login-box {
    max-width: 400px;
    margin: 100px auto;
    padding: 2.5rem;
    background: var(--card-bg);
    border-radius: var(--border-radius);
    border: 1px solid rgba(255, 255, 255, 0.1);
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.5);
    text-align: center;
}

.login-box h2 {
    margin-bottom: 2rem;
    color: var(--accent-color);
}

.admin-form input,
.admin-form textarea {
    width: 100%;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 8px;
    padding: 1rem;
    color: var(--text-primary);
    margin-bottom: 1rem;
    font-family: var(--font-main);
    transition: var(--transition);
}

.login-box input {
    width: 100%;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    padding: 1rem;
    border-radius: 8px;
    color: white;
    margin-bottom: 1rem;
    transition: var(--transition);
}

.login-box input:focus,
.admin-form input:focus,
.admin-form textarea:focus {
    outline: none;
    border-color: var(--accent-color);
    box-shadow: 0 0 10px rgba(0, 243, 255, 0.2);
}

.dashboard-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.tabs {
    display: flex;
    gap: 1rem;
    margin-bottom: 2rem;
}

.tab-btn {
    background: transparent;
    border: 1px solid var(--accent-color);
    color: var(--text-primary);
    padding: 0.6rem 2rem;
    cursor: pointer;
    border-radius: 50px;
    transition: var(--transition);
    font-weight: 500;
}

.tab-btn.active,
.tab-btn:hover {
    background: var(--accent-color);
    color: var(--bg-color);
    box-shadow: 0 0 15px rgba(0, 243, 255, 0.3);
}

.item-list {
    display: grid;
    gap: 1.5rem;
}

.item-card {
    background: var(--card-bg);
    padding: 1.5rem;
    border-radius: var(--border-radius);
    border: 1px solid rgba(255, 255, 255, 0.05);
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: var(--transition);
}

.item-card:hover {
    transform: translateY(-2px);
    border-color: rgba(255, 255, 255, 0.2);
}

.item-card h4 {
    color: var(--accent-color);
    margin-bottom: 0.5rem;
}

.btn-sm {
    padding: 0.4rem 1rem;
    font-size: 0.85rem;
    border-radius: 4px;
    margin-left: 0.5rem;
    border: none;
    cursor: pointer;
    transition: var(--transition);
    font-weight: 600;
}

.btn-sm:first-of-type {
    background: rgba(0, 243, 255, 0.1);
    color: var(--accent-color);
    border: 1px solid var(--accent-color);
}

.btn-sm:first-of-type:hover {
    background: var(--accent-color);
    color: #000;
}

/* Modal */
.modal-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(5px);
    z-index: 2000;
    justify-content: center;
    align-items: center;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.modal-overlay.open {
    display: flex;
    opacity: 1;
}

.modal-content {
    background: var(--card-bg);
    padding: 2.5rem;
    width: 100%;
    max-width: 600px;
    border-radius: var(--border-radius);
    border: 1px solid var(--accent-color);
    box-shadow: 0 0 40px rgba(0, 243, 255, 0.15);
    position: relative;
    transform: scale(0.9);
    transition: transform 0.3s ease;
}

.modal-overlay.open .modal-content {
    transform: scale(1);
}

.modal-content h3 {
    margin-bottom: 1.5rem;
    color: var(--text-primary);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    padding-bottom: 1rem;
}