/* ==================================================
   1. CSS VARIABLES
   ================================================== */
   :root {
    /* Dark Theme (Default) */
    --bg-color: #080A0A;
    --card-bg: #111414;
    --card-secondary: #151919;
    --text-primary: #F5F5F5;
    --text-muted: #9CA3AF;
    --accent-color: #B7FF3C;
    --accent-hover: #9BE620;
    --border-color: #2A2F2F;
    --nav-bg: rgba(8, 10, 10, 0.85);
    
    /* Typography */
    --font-sans: 'Inter', sans-serif;
    --font-mono: 'Fira Code', monospace;
    --font-hand: 'Caveat', cursive;
    
    /* Spacing & Layout */
    --section-padding: 8rem 0;
    --container-width: 1200px;
    --transition: all 0.3s ease;
}

[data-theme="light"] {
    --bg-color: #F9FAFB;
    --card-bg: #FFFFFF;
    --card-secondary: #F3F4F6;
    --text-primary: #111827;
    --text-muted: #4B5563;
    --accent-color: #84CC16;
    --accent-hover: #65A30D;
    --border-color: #E5E7EB;
    --nav-bg: rgba(249, 250, 251, 0.85);
}

/* ==================================================
   2. RESET & BASE STYLES
   ================================================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

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

body {
    font-family: var(--font-sans);
    background-color: var(--bg-color);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    transition: background-color 0.3s, color 0.3s;
}

/* Base grid pattern for background */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background-image: 
        linear-gradient(to right, var(--border-color) 1px, transparent 1px),
        linear-gradient(to bottom, var(--border-color) 1px, transparent 1px);
    background-size: 50px 50px;
    opacity: 0.05;
    z-index: -1;
    pointer-events: none;
}

a {
    text-decoration: none;
    color: inherit;
}

ul {
    list-style: none;
}

main {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 2rem;
}

section {
    padding: var(--section-padding);
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 0.8rem 1.5rem;
    font-weight: 500;
    font-size: 0.9rem;
    border-radius: 4px;
    transition: var(--transition);
    cursor: pointer;
}

.btn-primary {
    background-color: var(--accent-color);
    color: #080A0A;
}

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

.btn-secondary {
    background-color: transparent;
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

.btn-secondary:hover {
    border-color: var(--accent-color);
    color: var(--accent-color);
    transform: translateY(-2px);
}

/* Section Headings */
.section-heading {
    margin-bottom: 4rem;
}

.section-number {
    color: var(--accent-color);
    font-size: 0.9rem;
    font-family: var(--font-mono);
    display: block;
    margin-bottom: 0.5rem;
}

.section-heading h2 {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--text-primary);
}

/* Global Cards */
.card {
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 2rem;
    transition: var(--transition);
}

.card:hover {
    border-color: var(--text-muted);
    transform: translateY(-5px);
}

/* ==================================================
   3. NAVIGATION
   ================================================== */
header {
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
    background: var(--nav-bg);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
    transition: var(--transition);
}

.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 1rem 2rem;
}

.logo a {
    font-size: 1.2rem;
    font-weight: 800;
    letter-spacing: 1px;
}

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

.nav-links a {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-muted);
    transition: var(--transition);
}

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

.nav-controls {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

#theme-toggle {
    background: none;
    border: none;
    color: var(--text-primary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
}

[data-theme="light"] .sun-icon {
    display: none;
}
[data-theme="light"] .moon-icon {
    display: block;
}
body:not([data-theme="light"]) .moon-icon {
    display: none;
}
body:not([data-theme="light"]) .sun-icon {
    display: block;
}

.hamburger {
    display: none;
    cursor: pointer;
}

.hamburger div {
    width: 25px;
    height: 2px;
    background-color: var(--text-primary);
    margin: 5px;
    transition: var(--transition);
}

/* ==================================================
   4. HERO SECTION
   ================================================== */
.hero-section {
    min-height: 100vh;
    display: grid;
    grid-template-columns: 1fr 1fr;
    align-items: center;
    gap: 4rem;
    padding-top: 6rem;
    position: relative;
}

.greeting {
    font-family: var(--font-mono);
    color: var(--text-muted);
    font-size: 0.9rem;
    margin-bottom: 1rem;
    letter-spacing: 1px;
}

.name-title {
    font-size: 4.5rem;
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 1rem;
    color: var(--text-primary);
}
.name-title br {
    display: none;
}

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

.hero-description {
    color: var(--text-muted);
    max-width: 450px;
    margin-bottom: 2.5rem;
    font-size: 1.1rem;
}

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

.scroll-indicator {
    position: absolute;
    bottom: 2rem;
    left: 2rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    color: var(--text-muted);
    font-size: 0.8rem;
    opacity: 0.7;
    animation: bounce 2s infinite;
}

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

/* Terminal Card */
.terminal-card {
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    overflow: hidden;
    font-family: var(--font-mono);
    font-size: 0.85rem;
    box-shadow: 0 10px 30px rgba(0,0,0,0.5);
    position: relative;
    z-index: 2;
}

.terminal-header {
    background-color: var(--card-secondary);
    padding: 0.8rem 1rem;
    border-bottom: 1px solid var(--border-color);
}

.mac-buttons {
    display: flex;
    gap: 6px;
}

.mac-buttons span {
    width: 12px;
    height: 12px;
    border-radius: 50%;
}
.mac-buttons .close { background-color: #FF5F56; }
.mac-buttons .minimize { background-color: #FFBD2E; }
.mac-buttons .maximize { background-color: #27C93F; }

.terminal-body {
    padding: 1.5rem;
}

.terminal-body p {
    margin-bottom: 0.8rem;
    color: var(--text-primary);
}

.terminal-body .prompt {
    color: var(--accent-color);
}

.terminal-body .output {
    color: var(--text-muted);
    margin-bottom: 1.5rem;
    padding-left: 1rem;
}

.skills-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 0.5rem;
}

.status-dot {
    display: inline-block;
    width: 8px;
    height: 8px;
    background-color: var(--accent-color);
    border-radius: 50%;
    margin-right: 5px;
    box-shadow: 0 0 8px var(--accent-color);
}

.cursor {
    animation: blink 1s step-end infinite;
}
@keyframes blink { 50% { opacity: 0; } }

.hero-visual {
    position: relative;
}

.handwritten-text {
    position: absolute;
    bottom: -30px;
    right: -20px;
    font-family: var(--font-hand);
    color: var(--accent-color);
    font-size: 2rem;
    transform: rotate(-10deg);
    z-index: 3;
}


/* ==================================================
   5. ABOUT SECTION
   ================================================== */
.about-content {
    display: grid;
    grid-template-columns: 3fr 2fr;
    gap: 4rem;
    align-items: center;
    margin-bottom: 4rem;
}

.about-text p {
    color: var(--text-muted);
    font-size: 1.1rem;
}

.image-placeholder {
    width: 100%;
    aspect-ratio: 4/5;
    background: linear-gradient(145deg, var(--card-secondary), var(--card-bg));
    border-radius: 12px;
    border: 1px solid var(--border-color);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
}

.stat-card {
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 2rem 1.5rem;
    text-align: center;
    transition: var(--transition);
}

.stat-card:hover {
    border-color: var(--accent-color);
}

.stat-card h3 {
    font-size: 2.5rem;
    color: var(--accent-color);
    margin-bottom: 0.5rem;
    font-weight: 700;
}

.stat-card p {
    color: var(--text-muted);
    font-size: 0.9rem;
}

/* ==================================================
   6. EDUCATION & HOBBIES
   ================================================== */
.ed-hobbies-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
}

.card-icon {
    color: var(--accent-color);
    margin-bottom: 1.5rem;
}

.ed-card h3, .hobby-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.ed-card .degree {
    font-size: 1.1rem;
    font-weight: 500;
    margin-bottom: 0.5rem;
}

.ed-card .university, .ed-card .year {
    color: var(--text-muted);
    font-size: 0.9rem;
}

.hobby-card ul {
    display: grid;
    grid-template-columns: 1fr;
    gap: 0.8rem;
}

.hobby-card li {
    color: var(--text-muted);
    display: flex;
    align-items: center;
}

.hobby-card li::before {
    content: '•';
    color: var(--accent-color);
    margin-right: 10px;
}

/* ==================================================
   7. SUBJECTS STUDIED
   ================================================== */
.subjects-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.subject-card h3 {
    font-size: 1.1rem;
    margin-bottom: 0.8rem;
}

.subject-card p {
    color: var(--text-muted);
    font-size: 0.9rem;
}

/* ==================================================
   8. SKILLS
   ================================================== */
.skills-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
}

.skills-bars {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.skill-info {
    display: flex;
    justify-content: space-between;
    margin-bottom: 0.5rem;
    font-size: 0.9rem;
    font-family: var(--font-mono);
}

.progress-bar {
    width: 100%;
    height: 8px;
    background-color: var(--card-secondary);
    border-radius: 4px;
    overflow: hidden;
}

.progress {
    height: 100%;
    background-color: var(--accent-color);
    border-radius: 4px;
    width: 0; /* Animated via JS */
    transition: width 1.5s cubic-bezier(0.22, 1, 0.36, 1);
}

.skills-tags h3 {
    font-size: 1.2rem;
    margin-bottom: 2rem;
}

.tags-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1rem;
}

.tech-tag {
    background-color: var(--card-secondary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 1rem 0.5rem;
    text-align: center;
    font-size: 0.8rem;
    color: var(--text-muted);
    transition: var(--transition);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.tech-tag:hover {
    border-color: var(--accent-color);
    color: var(--accent-color);
    transform: translateY(-3px);
}

/* ==================================================
   9. PROJECTS
   ================================================== */
.projects-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
}

.project-card {
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    overflow: hidden;
    transition: var(--transition);
}

.project-card:hover {
    border-color: var(--accent-color);
    transform: translateY(-8px);
}

.project-image {
    width: 100%;
    height: 250px;
    overflow: hidden;
}

.img-placeholder {
    width: 100%;
    height: 100%;
    transition: transform 0.5s ease;
}

.project-card:hover .img-placeholder {
    transform: scale(1.05);
}

.project-content {
    padding: 2rem;
}

.project-content h3 {
    font-size: 1.3rem;
    margin-bottom: 1rem;
}

.project-content p {
    color: var(--text-muted);
    font-size: 0.95rem;
    margin-bottom: 1.5rem;
}

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

.project-tech span {
    font-size: 0.8rem;
    font-family: var(--font-mono);
    color: var(--accent-color);
    background-color: rgba(183, 255, 60, 0.1);
    padding: 0.3rem 0.6rem;
    border-radius: 4px;
}
[data-theme="light"] .project-tech span {
    background-color: rgba(132, 204, 22, 0.1);
}

.view-project {
    display: inline-flex;
    align-items: center;
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-primary);
    transition: var(--transition);
}

.project-card:hover .view-project {
    color: var(--accent-color);
    gap: 5px; /* Creates arrow movement effect */
}

/* ==================================================
   10. CONTACT
   ================================================== */
.contact-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    background-image: 
        radial-gradient(circle at 100% 0%, rgba(183, 255, 60, 0.05) 0%, transparent 50%);
}

[data-theme="light"] .contact-container {
    background-image: none;
}

.contact-left h2 {
    font-size: 3rem;
    line-height: 1.2;
    margin-bottom: 1.5rem;
}

.contact-left p {
    color: var(--text-muted);
    margin-bottom: 2.5rem;
    font-size: 1.1rem;
    max-width: 400px;
}

.contact-buttons {
    display: flex;
    gap: 1rem;
}

.social-links {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    justify-content: center;
    height: 100%;
}

.social-links li {
    display: flex;
    align-items: center;
    gap: 1rem;
}

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

.social-links a {
    color: var(--text-muted);
    font-size: 1.1rem;
    transition: var(--transition);
}

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


/* ==================================================
   11. FOOTER
   ================================================== */
footer {
    border-top: 1px solid var(--border-color);
    padding: 2rem 0;
    margin-top: 4rem;
}

.footer-content {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.footer-logo {
    font-weight: 800;
}

.footer-motto, .footer-copy {
    color: var(--text-muted);
    font-size: 0.9rem;
}

/* ==================================================
   12. ANIMATIONS & UTILS
   ================================================== */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s ease;
}

.reveal.active {
    opacity: 1;
    transform: translateY(0);
}


/* ==================================================
   13. RESPONSIVE DESIGN
   ================================================== */

@media (max-width: 1024px) {
    .name-title {
        font-size: 3.5rem;
    }
    
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .subjects-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .skills-container {
        grid-template-columns: 1fr;
        gap: 3rem;
    }
    
    .tags-grid {
        grid-template-columns: repeat(6, 1fr);
    }
}

@media (max-width: 768px) {
    .hamburger {
        display: block;
    }
    
    .nav-links {
        position: absolute;
        right: 0;
        top: 70px;
        background-color: var(--card-bg);
        flex-direction: column;
        width: 100%;
        text-align: center;
        gap: 0;
        transform: translateY(-150%);
        transition: transform 0.3s ease-in;
        border-bottom: 1px solid var(--border-color);
    }
    
    .nav-links.active {
        transform: translateY(0);
    }
    
    .nav-links li {
        padding: 1.5rem 0;
        border-bottom: 1px solid var(--border-color);
    }
    .nav-links li:last-child {
        border-bottom: none;
    }

    .hamburger.active .line1 {
        transform: rotate(-45deg) translate(-5px, 6px);
    }
    .hamburger.active .line2 {
        opacity: 0;
    }
    .hamburger.active .line3 {
        transform: rotate(45deg) translate(-5px, -6px);
    }

    .hero-section {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 3rem;
        padding-top: 8rem;
    }
    .hero-description {
        margin: 0 auto 2.5rem;
    }
    .hero-buttons {
        justify-content: center;
    }
    .scroll-indicator {
        position: relative;
        left: auto;
        bottom: auto;
        margin-top: 3rem;
    }

    .about-content {
        grid-template-columns: 1fr;
    }
    
    .ed-hobbies-grid {
        grid-template-columns: 1fr;
    }
    
    .subjects-grid {
        grid-template-columns: 1fr;
    }
    
    .tags-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .projects-grid {
        grid-template-columns: 1fr;
    }
    
    .contact-container {
        grid-template-columns: 1fr;
        text-align: center;
    }
    .contact-buttons {
        justify-content: center;
    }
    .social-links {
        align-items: center;
    }
    
    .footer-content {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .name-title {
        font-size: 2.5rem;
    }
    .name-title br {
        display: block;
    }
    .stats-grid {
        grid-template-columns: 1fr;
    }
    .tags-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .contact-left h2 {
        font-size: 2.2rem;
    }
    .contact-buttons {
        flex-direction: column;
    }
}