/* ==================== IMPORT FONTS ==================== */
@import url('https://fonts.googleapis.com/css2?family=Orbitron:wght@400;500;700;900&family=Space+Mono:wght@400;700&display=swap');

/* ==================== CSS VARIABLES ==================== */
:root {
    /* Colors - Light Mode */
    --primary-color: #00f7ff;
    --secondary-color: #ff006e;
    --accent-color: #ffd60a;
    --bg-color: #0a0e27;
    --bg-secondary: #151934;
    --text-color: #ffffff;
    --text-secondary: #a8b2d1;
    --card-bg: rgba(21, 25, 52, 0.8);
    --border-color: rgba(0, 247, 255, 0.2);
    
    /* Fonts */
    --font-primary: 'Orbitron', sans-serif;
    --font-secondary: 'Space Mono', monospace;
    
    /* Spacing */
    --section-padding: 100px 0;
    --container-width: 1200px;
    
    /* Transitions */
    --transition-fast: 0.3s ease;
    --transition-medium: 0.5s ease;
    --transition-slow: 0.8s ease;
}

/* Light Mode */
body.light-mode {
    --bg-color: #f0f4f8;
    --bg-secondary: #ffffff;
    --text-color: #1a202c;
    --text-secondary: #4a5568;
    --card-bg: rgba(255, 255, 255, 0.9);
    --border-color: rgba(0, 247, 255, 0.3);
}

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

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

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

.container {
    max-width: var(--container-width);
    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;
    padding: 1rem 0;
    border-bottom: 1px solid var(--border-color);
}

.nav-container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-family: var(--font-primary);
    font-size: 1.5rem;
    font-weight: 900;
    cursor: pointer;
    transition: var(--transition-fast);
}

.logo-bracket {
    color: var(--primary-color);
}

.logo-text {
    color: var(--text-color);
    margin: 0 5px;
}

.logo:hover {
    transform: scale(1.05);
}

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

.nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    position: relative;
    transition: var(--transition-fast);
    font-family: var(--font-primary);
    font-size: 0.9rem;
}

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

.nav-link:hover,
.nav-link.active {
    color: var(--text-color);
}

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

.theme-toggle {
    background: transparent;
    border: 2px solid var(--primary-color);
    color: var(--primary-color);
    width: 40px;
    height: 40px;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition-fast);
}

.theme-toggle:hover {
    background: var(--primary-color);
    color: var(--bg-color);
    transform: rotate(180deg);
}

.hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
}

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

/* ==================== HERO SECTION ==================== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
    padding-top: 80px;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
}

/* 3D Cube Animation */
.cube-container {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    perspective: 1000px;
}

.cube {
    width: 200px;
    height: 200px;
    position: relative;
    transform-style: preserve-3d;
    animation: rotateCube 20s infinite linear;
}

@keyframes rotateCube {
    from { transform: rotateX(0deg) rotateY(0deg); }
    to { transform: rotateX(360deg) rotateY(360deg); }
}

.cube-face {
    position: absolute;
    width: 200px;
    height: 200px;
    border: 2px solid var(--primary-color);
    background: rgba(0, 247, 255, 0.1);
    opacity: 0.3;
}

.cube-face.front  { transform: rotateY(0deg) translateZ(100px); }
.cube-face.back   { transform: rotateY(180deg) translateZ(100px); }
.cube-face.right  { transform: rotateY(90deg) translateZ(100px); }
.cube-face.left   { transform: rotateY(-90deg) translateZ(100px); }
.cube-face.top    { transform: rotateX(90deg) translateZ(100px); }
.cube-face.bottom { transform: rotateX(-90deg) translateZ(100px); }

/* Gradient Orbs */
.gradient-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.5;
    animation: float 8s ease-in-out infinite;
}

.orb-1 {
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, var(--primary-color), transparent);
    top: 10%;
    left: 10%;
}

.orb-2 {
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, var(--secondary-color), transparent);
    top: 50%;
    right: 10%;
    animation-delay: -2s;
}

.orb-3 {
    width: 350px;
    height: 350px;
    background: radial-gradient(circle, var(--accent-color), transparent);
    bottom: 10%;
    left: 50%;
    animation-delay: -4s;
}

@keyframes float {
    0%, 100% { transform: translate(0, 0) scale(1); }
    33% { transform: translate(30px, -30px) scale(1.1); }
    66% { transform: translate(-30px, 30px) scale(0.9); }
}

/* Hero Content */
.hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
    max-width: 800px;
    padding: 2rem;
}

.hero-title {
    font-family: var(--font-primary);
    font-size: clamp(2rem, 5vw, 4rem);
    font-weight: 900;
    margin-bottom: 1rem;
    line-height: 1.2;
}

.title-line {
    display: block;
    animation: slideInDown 1s ease-out;
}

.title-line:nth-child(2) {
    animation-delay: 0.2s;
}

@keyframes slideInDown {
    from {
        opacity: 0;
        transform: translateY(-50px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.gradient-text {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color), var(--accent-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: gradientShift 3s ease infinite;
    background-size: 200% 200%;
}

@keyframes gradientShift {
    0%, 100% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
}

.hero-subtitle {
    font-size: 1.2rem;
    color: var(--text-secondary);
    margin-bottom: 2rem;
    animation: fadeIn 1s ease-out 0.4s both;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
    animation: fadeIn 1s ease-out 0.6s both;
}

/* Buttons */
.btn {
    padding: 12px 30px;
    border-radius: 50px;
    text-decoration: none;
    font-family: var(--font-primary);
    font-weight: 700;
    font-size: 0.9rem;
    transition: var(--transition-fast);
    position: relative;
    overflow: hidden;
    border: 2px solid transparent;
    cursor: pointer;
}

.btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.2);
    transition: width 0.6s, height 0.6s, top 0.6s, left 0.6s;
}

.btn:hover::before {
    width: 300px;
    height: 300px;
    top: -50%;
    left: -50%;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: var(--bg-color);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 30px rgba(0, 247, 255, 0.4);
}

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

.btn-secondary:hover {
    background: var(--primary-color);
    color: var(--bg-color);
    transform: translateY(-3px);
}

/* Scroll Indicator */
.scroll-indicator {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    text-align: center;
    animation: fadeIn 1s ease-out 1s both;
}

.mouse {
    width: 25px;
    height: 40px;
    border: 2px solid var(--primary-color);
    border-radius: 15px;
    position: relative;
    margin: 0 auto 10px;
}

.wheel {
    width: 3px;
    height: 8px;
    background: var(--primary-color);
    border-radius: 2px;
    position: absolute;
    top: 8px;
    left: 50%;
    transform: translateX(-50%);
    animation: scrollWheel 1.5s infinite;
}

@keyframes scrollWheel {
    0% { opacity: 1; top: 8px; }
    100% { opacity: 0; top: 24px; }
}

.scroll-indicator p {
    color: var(--text-secondary);
    font-size: 0.8rem;
}

/* ==================== SECTIONS ==================== */
section {
    padding: var(--section-padding);
    position: relative;
}

.section-title {
    font-family: var(--font-primary);
    font-size: clamp(2rem, 4vw, 3rem);
    margin-bottom: 3rem;
    position: relative;
    display: inline-block;
}

.title-number {
    color: var(--primary-color);
    font-size: 1.5rem;
    margin-right: 0.5rem;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 0;
    width: 100px;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    border-radius: 2px;
}

/* ==================== SKILLS SECTION ==================== */
.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.skill-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 15px;
    padding: 2rem;
    transition: var(--transition-medium);
    position: relative;
    overflow: hidden;
}

.skill-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(0, 247, 255, 0.1), transparent);
    transition: var(--transition-medium);
}

.skill-card:hover::before {
    left: 100%;
}

.skill-card:hover {
    transform: translateY(-10px);
    border-color: var(--primary-color);
    box-shadow: 0 20px 40px rgba(0, 247, 255, 0.2);
}

.skill-icon {
    font-size: 3rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
    transition: var(--transition-fast);
}

.skill-card:hover .skill-icon {
    transform: scale(1.2) rotate(5deg);
}

.skill-card h3 {
    font-family: var(--font-primary);
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.skill-progress {
    width: 100%;
    height: 8px;
    background: var(--bg-secondary);
    border-radius: 10px;
    overflow: hidden;
    margin-bottom: 0.5rem;
}

.progress-bar {
    height: 100%;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    border-radius: 10px;
    width: 0;
    transition: width 1s ease-out;
    position: relative;
    overflow: hidden;
}

.progress-bar::after {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    animation: progressShine 2s infinite;
}

@keyframes progressShine {
    to { left: 100%; }
}

.skill-percentage {
    color: var(--primary-color);
    font-weight: 700;
    font-size: 1.2rem;
}

.skill-description {
    color: var(--text-secondary);
    margin: 1rem 0;
}

.view-projects-btn {
    background: transparent;
    border: 1px solid var(--primary-color);
    color: var(--primary-color);
    padding: 8px 16px;
    border-radius: 20px;
    cursor: pointer;
    font-family: var(--font-primary);
    transition: var(--transition-fast);
    margin-top: 1rem;
}

.view-projects-btn:hover {
    background: var(--primary-color);
    color: var(--bg-color);
}

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

.filter-btn {
    padding: 10px 20px;
    background: transparent;
    border: 2px solid var(--border-color);
    color: var(--text-secondary);
    border-radius: 25px;
    cursor: pointer;
    font-family: var(--font-primary);
    transition: var(--transition-fast);
}

.filter-btn:hover,
.filter-btn.active {
    border-color: var(--primary-color);
    color: var(--primary-color);
    background: rgba(0, 247, 255, 0.1);
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 2rem;
}

.project-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 15px;
    overflow: hidden;
    transition: var(--transition-medium);
    opacity: 1;
    transform: scale(1);
}

.project-card.hide {
    opacity: 0;
    transform: scale(0.8);
    height: 0;
    margin: 0;
    padding: 0;
    overflow: hidden;
}

.project-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0, 247, 255, 0.2);
}

.project-image {
    position: relative;
    overflow: hidden;
    height: 250px;
    background: var(--bg-secondary);
}

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

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

.project-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    opacity: 0;
    transition: var(--transition-fast);
}

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

.overlay-btn {
    padding: 10px 20px;
    background: var(--primary-color);
    color: var(--bg-color);
    border: none;
    border-radius: 25px;
    cursor: pointer;
    font-weight: 700;
    transition: var(--transition-fast);
}

.overlay-btn:hover {
    transform: scale(1.1);
    background: var(--secondary-color);
}

.project-info {
    padding: 1.5rem;
}

.project-tags {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 1rem;
    flex-wrap: wrap;
}

.tag {
    padding: 4px 12px;
    background: rgba(0, 247, 255, 0.1);
    border: 1px solid var(--primary-color);
    border-radius: 15px;
    font-size: 0.8rem;
    color: var(--primary-color);
}

.project-title {
    font-family: var(--font-primary);
    font-size: 1.3rem;
    margin-bottom: 0.5rem;
}

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

.project-date {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* Add Project Card */
.add-project-card {
    background: rgba(0, 247, 255, 0.05);
    border: 2px dashed var(--primary-color);
    border-radius: 15px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 3rem;
    cursor: pointer;
    transition: var(--transition-fast);
    min-height: 400px;
}

.add-project-card:hover {
    background: rgba(0, 247, 255, 0.1);
    border-style: solid;
}

.add-project-card i {
    font-size: 3rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.add-project-card p {
    font-family: var(--font-primary);
    font-size: 1.2rem;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.add-project-card small {
    color: var(--text-secondary);
}

/* ==================== CONTACT SECTION ==================== */
.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
}

.contact-info h3 {
    font-family: var(--font-primary);
    font-size: 2rem;
    margin-bottom: 1rem;
}

.contact-info p {
    color: var(--text-secondary);
    margin-bottom: 2rem;
}

.contact-details {
    margin-bottom: 2rem;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1.5rem;
    padding: 1rem;
    background: var(--card-bg);
    border-radius: 10px;
    border: 1px solid var(--border-color);
    transition: var(--transition-fast);
}

.contact-item:hover {
    border-color: var(--primary-color);
    transform: translateX(10px);
}

.contact-item i {
    font-size: 1.5rem;
    color: var(--primary-color);
}

.contact-item h4 {
    font-family: var(--font-primary);
    margin-bottom: 0.25rem;
}

.contact-item p {
    color: var(--text-secondary);
    margin: 0;
}

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

.social-link {
    width: 50px;
    height: 50px;
    border: 2px solid var(--primary-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary-color);
    font-size: 1.2rem;
    transition: var(--transition-fast);
}

.social-link:hover {
    background: var(--primary-color);
    color: var(--bg-color);
    transform: translateY(-5px) rotate(360deg);
}

/* Contact Form */
.contact-form {
    background: var(--card-bg);
    padding: 2rem;
    border-radius: 15px;
    border: 1px solid var(--border-color);
}

.form-group {
    position: relative;
    margin-bottom: 2rem;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 12px 15px;
    background: var(--bg-secondary);
    border: 2px solid var(--border-color);
    border-radius: 10px;
    color: var(--text-color);
    font-family: var(--font-secondary);
    font-size: 1rem;
    transition: var(--transition-fast);
}

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

.form-group label {
    position: absolute;
    left: 15px;
    top: 12px;
    color: var(--text-secondary);
    transition: var(--transition-fast);
    pointer-events: none;
}

.form-group input:focus + label,
.form-group input:valid + label,
.form-group textarea:focus + label,
.form-group textarea:valid + label {
    top: -20px;
    left: 0;
    font-size: 0.9rem;
    color: var(--primary-color);
}

.form-group textarea {
    resize: vertical;
}

.btn-loader {
    display: none;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-top-color: white;
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-left: 10px;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

.contact-form button[type="submit"].loading .btn-text {
    display: none;
}

.contact-form button[type="submit"].loading .btn-loader {
    display: inline-block;
}

.form-status {
    margin-top: 1rem;
    padding: 1rem;
    border-radius: 10px;
    text-align: center;
    font-weight: 700;
    display: none;
}

.form-status.success {
    background: rgba(0, 255, 0, 0.1);
    border: 1px solid green;
    color: lime;
    display: block;
}

.form-status.error {
    background: rgba(255, 0, 0, 0.1);
    border: 1px solid red;
    color: #ff6b6b;
    display: block;
}

/* ==================== MODAL ==================== */
.modal {
    display: none;
    position: fixed;
    z-index: 2000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.9);
    backdrop-filter: blur(10px);
}

.modal.active {
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal-content {
    background: var(--bg-secondary);
    padding: 2rem;
    border-radius: 15px;
    border: 1px solid var(--primary-color);
    max-width: 800px;
    width: 90%;
    max-height: 90vh;
    overflow-y: auto;
    position: relative;
    animation: modalSlideIn 0.3s ease;
}

@keyframes modalSlideIn {
    from {
        opacity: 0;
        transform: translateY(-50px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.modal-close {
    position: absolute;
    top: 1rem;
    right: 1rem;
    font-size: 2rem;
    color: var(--text-secondary);
    cursor: pointer;
    transition: var(--transition-fast);
}

.modal-close:hover {
    color: var(--secondary-color);
    transform: rotate(90deg);
}

.modal-title {
    font-family: var(--font-primary);
    font-size: 1.8rem;
    margin-bottom: 1.5rem;
    color: var(--primary-color);
}

.code-container {
    background: var(--bg-color);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    padding: 1.5rem;
    margin-bottom: 1rem;
    overflow-x: auto;
}

.code-container pre {
    margin: 0;
}

.code-container code {
    font-family: 'Courier New', monospace;
    color: var(--text-color);
    font-size: 0.9rem;
    line-height: 1.6;
}

/* ==================== FOOTER ==================== */
.footer {
    background: var(--bg-secondary);
    padding: 2rem 0;
    text-align: center;
    border-top: 1px solid var(--border-color);
}

.footer p {
    color: var(--text-secondary);
    margin: 0.5rem 0;
}

.footer i {
    color: var(--secondary-color);
}

/* ==================== RESPONSIVE ==================== */
@media (max-width: 968px) {
    .nav-menu {
        position: fixed;
        left: -100%;
        top: 70px;
        flex-direction: column;
        background: var(--bg-secondary);
        width: 100%;
        text-align: center;
        transition: var(--transition-fast);
        padding: 2rem 0;
        border-top: 1px solid var(--border-color);
    }

    .nav-menu.active {
        left: 0;
    }

    .hamburger {
        display: flex;
    }

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

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

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

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

@media (max-width: 480px) {
    .hero-buttons {
        flex-direction: column;
    }

    .project-filters {
        flex-direction: column;
    }
}

/* ==================== ANIMATIONS ==================== */
.fade-in {
    animation: fadeIn 1s ease-in;
}

.slide-in-left {
    animation: slideInLeft 0.8s ease-out;
}

@keyframes slideInLeft {
    from {
        opacity: 0;
        transform: translateX(-50px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.slide-in-right {
    animation: slideInRight 0.8s ease-out;
}

@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(50px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

/* Scroll reveal animations */
.reveal {
    opacity: 0;
    transform: translateY(50px);
    transition: all 0.8s ease;
}

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