/* =======================================
   Variables & Reset
======================================= */
:root {
    --primary: #f97316; /* Vibrant Orange */
    --primary-dark: #ea580c;
    --secondary: #10b981; /* Green focus */
    --dark: #0f172a;
    --darker: #020617;
    --light: #f8fafc;
    --text-main: #334155;
    --text-muted: #64748b;
    --card-bg: #ffffff;
    --nav-bg: rgba(255, 255, 255, 0.9);
    --border: #e2e8f0;
    --shadow: 0 10px 30px rgba(0,0,0,0.05);
    
    --transition: all 0.3s ease;
    --font-heading: 'Poppins', sans-serif;
    --font-body: 'Inter', sans-serif;
}

body.dark-mode {
    --dark: #f8fafc;
    --darker: #ffffff;
    --light: #020617;
    --text-main: #cbd5e1;
    --text-muted: #94a3b8;
    --card-bg: #0f172a;
    --nav-bg: rgba(2, 6, 23, 0.9);
    --border: #1e293b;
    --shadow: 0 10px 30px rgba(0,0,0,0.3);
}

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

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

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    color: var(--dark);
    line-height: 1.2;
}

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

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

.container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
}

.section {
    padding: 100px 0;
}

.bg-alt {
    background-color: var(--card-bg);
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
}

/* =======================================
   Typography & Utilities
======================================= */
.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 15px;
    position: relative;
    display: inline-block;
}

.section-line {
    height: 4px;
    width: 60px;
    background: var(--primary);
    margin: 0 auto;
    border-radius: 2px;
}

.section-subtitle {
    margin-top: 15px;
    color: var(--text-muted);
    font-size: 1.1rem;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 12px 28px;
    border-radius: 30px;
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    border: none;
    transition: var(--transition);
}

.btn-primary {
    background-color: var(--primary);
    color: white;
    box-shadow: 0 4px 15px rgba(249, 115, 22, 0.3);
}

.btn-primary:hover {
    background-color: var(--primary-dark);
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(249, 115, 22, 0.4);
}

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

.btn-secondary:hover {
    background-color: var(--dark);
    color: var(--light);
}

.btn-sm {
    padding: 8px 16px;
    font-size: 0.9rem;
}

/* =======================================
   Navigation
======================================= */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    padding: 25px 0;
    z-index: 1000;
    transition: var(--transition);
}

.navbar.scrolled {
    padding: 15px 0;
    background-color: var(--nav-bg);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow);
}

.nav-container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 2rem;
    font-weight: 800;
    font-family: var(--font-heading);
    color: var(--dark);
    letter-spacing: -1px;
}

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

.nav-links {
    display: flex;
    gap: 30px;
    list-style: none;
}

.nav-link {
    font-weight: 500;
    color: var(--text-main);
    position: relative;
    padding-bottom: 5px;
}

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

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

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

.nav-actions {
    display: flex;
    align-items: center;
    gap: 20px;
}

.theme-toggle {
    background: none;
    border: none;
    font-size: 1.2rem;
    color: var(--dark);
    cursor: pointer;
    transition: var(--transition);
}

.theme-toggle:hover {
    color: var(--primary);
    transform: rotate(15deg);
}

.hamburger {
    display: none;
    cursor: pointer;
    z-index: 100;
}

.bar {
    display: block;
    width: 25px;
    height: 3px;
    margin: 5px auto;
    background-color: var(--dark);
    transition: var(--transition);
    border-radius: 3px;
}

/* =======================================
   Hero Section
======================================= */
.hero {
    height: 100vh;
    min-height: 600px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    position: relative;
    padding: 0 5%;
    background: linear-gradient(135deg, var(--light) 0%, var(--card-bg) 100%);
}

.particles-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0.4;
    z-index: 0;
    background-image: radial-gradient(var(--border) 1px, transparent 1px);
    background-size: 30px 30px;
}

.hero-content {
    max-width: 800px;
    z-index: 1;
    margin-top: 50px;
}

.hero-greeting {
    font-size: 1.2rem;
    font-weight: 500;
    color: var(--primary);
    margin-bottom: 10px;
    text-transform: uppercase;
    letter-spacing: 2px;
}

.hero-title {
    font-size: clamp(3rem, 5vw, 4.5rem);
    margin-bottom: 10px;
    letter-spacing: -1px;
}

.highlight {
    color: var(--primary);
}

.typewriter-container {
    font-size: clamp(1.5rem, 3vw, 2.5rem);
    font-weight: 600;
    color: var(--text-muted);
    height: 60px;
    margin-bottom: 20px;
}

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

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

.hero-description {
    font-size: 1.1rem;
    max-width: 600px;
    margin-bottom: 40px;
    color: var(--text-muted);
}

.hero-cta {
    display: flex;
    gap: 20px;
    margin-bottom: 40px;
}

.social-links-hero {
    display: flex;
    gap: 15px;
}

.social-icon {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background-color: var(--card-bg);
    border: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    color: var(--dark);
    transition: var(--transition);
}

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

.scroll-down {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    font-size: 1.5rem;
    color: var(--primary);
    animation: bounce 2s infinite;
}

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

/* =======================================
   About Section
======================================= */
.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.about-image-container {
    position: relative;
}

.about-image-container::before {
    content: '';
    position: absolute;
    top: -20px;
    left: -20px;
    width: 100%;
    height: 100%;
    border: 3px solid var(--primary);
    border-radius: 12px;
    z-index: 0;
}

.about-image {
    position: relative;
    z-index: 1;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: var(--shadow);
    background-color: var(--card-bg);
}

.about-content h3 {
    font-size: 2rem;
    margin-bottom: 20px;
}

.about-content p {
    margin-bottom: 20px;
    font-size: 1.05rem;
}

.about-highlights {
    display: flex;
    gap: 30px;
    margin: 30px 0;
}

.highlight-item {
    display: flex;
    align-items: center;
    gap: 15px;
}

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

.highlight-item span {
    font-weight: 600;
    font-family: var(--font-heading);
    color: var(--dark);
}

.skills-title {
    margin-bottom: 15px;
    font-size: 1.2rem;
}

.skill-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.skill-tag {
    background-color: var(--card-bg);
    border: 1px solid var(--border);
    padding: 8px 16px;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 500;
    transition: var(--transition);
}

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

/* =======================================
   Stats Section
======================================= */
.stats {
    background-color: var(--darker);
    padding: 60px 0;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    text-align: center;
}

.stat-card {
    padding: 30px;
    border-radius: 12px;
    background-color: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: var(--transition);
}

.stat-card:hover {
    transform: translateY(-5px);
    background-color: rgba(255, 255, 255, 0.1);
}

.stat-icon {
    font-size: 2.5rem;
    color: var(--primary);
    margin-bottom: 15px;
}

.stat-card h3,
.stat-card span {
    color: white;
    font-size: 2.5rem;
    font-weight: 700;
    display: inline-block;
}

.stat-label {
    color: #cbd5e1;
    font-size: 1.1rem;
    margin-top: 5px;
}

/* =======================================
   Projects Section
======================================= */
.project-filters {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 15px;
    margin-bottom: 40px;
}

.filter-btn {
    padding: 8px 24px;
    border: 1px solid var(--border);
    background-color: var(--card-bg);
    border-radius: 30px;
    font-weight: 600;
    color: var(--text-main);
    cursor: pointer;
    transition: var(--transition);
}

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

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 30px;
}

.project-card {
    background-color: var(--card-bg);
    border-radius: 16px;
    overflow: hidden;
    box-shadow: var(--shadow);
    border: 1px solid var(--border);
    transition: var(--transition);
}

.project-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0,0,0,0.1);
}

.project-card.hide {
    display: none;
}

.project-img {
    height: 220px;
    overflow: hidden;
    position: relative;
    background-color: #fafafa;
}

.project-img img {
    width: 100%;
    height: 100%;
}

.project-info {
    padding: 25px;
}

.project-category {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--primary);
    text-transform: uppercase;
    letter-spacing: 1px;
    display: block;
    margin-bottom: 10px;
}

.project-title {
    font-size: 1.4rem;
    margin-bottom: 15px;
}

.project-desc {
    color: var(--text-muted);
    font-size: 0.95rem;
}

/* =======================================
   Services Section
======================================= */
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
}

.service-card {
    background-color: var(--card-bg);
    padding: 40px 30px;
    border-radius: 12px;
    box-shadow: var(--shadow);
    border: 1px solid var(--border);
    transition: var(--transition);
    text-align: center;
}

.service-card:hover {
    transform: translateY(-10px);
    border-color: var(--primary);
}

.service-icon {
    width: 70px;
    height: 70px;
    background: rgba(249, 115, 22, 0.1);
    color: var(--primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    margin: 0 auto 20px;
    transition: var(--transition);
}

.service-card:hover .service-icon {
    background: var(--primary);
    color: white;
}

.service-title {
    font-size: 1.3rem;
    margin-bottom: 15px;
}

.service-desc {
    font-size: 0.95rem;
    color: var(--text-muted);
}

/* =======================================
   Testimonials Section
======================================= */
.testimonial-slider {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
    position: relative;
}

.testimonial-container {
    position: relative;
    min-height: 250px;
}

.testimonial-card {
    background: var(--card-bg);
    padding: 40px;
    border-radius: 16px;
    box-shadow: var(--shadow);
    border: 1px solid var(--border);
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    opacity: 0;
    visibility: hidden;
    transition: all 0.5s ease;
    transform: translateX(50px);
}

.testimonial-card.active {
    opacity: 1;
    visibility: visible;
    transform: translateX(0);
}

.quote-icon {
    font-size: 3rem;
    color: rgba(249, 115, 22, 0.2);
    margin-bottom: 20px;
}

.testimonial-text {
    font-size: 1.2rem;
    font-style: italic;
    color: var(--dark);
    margin-bottom: 30px;
}

.testimonial-author {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 15px;
}

.author-avatar {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: var(--primary);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
}

.author-info h4 {
    font-size: 1.1rem;
    margin-bottom: 2px;
}

.author-info span {
    font-size: 0.9rem;
    color: var(--text-muted);
}

.slider-dots {
    display: flex;
    justify-content: center;
    gap: 10px;
    margin-top: 30px;
}

.dot {
    width: 12px;
    height: 12px;
    background: var(--border);
    border-radius: 50%;
    cursor: pointer;
    transition: var(--transition);
}

.dot.active, .dot:hover {
    background: var(--primary);
}

/* =======================================
   Contact Section
======================================= */
.contact-wrapper {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 50px;
}

.contact-method {
    display: flex;
    align-items: flex-start;
    gap: 20px;
    margin-bottom: 30px;
}

.icon-box {
    width: 50px;
    height: 50px;
    background: rgba(249, 115, 22, 0.1);
    color: var(--primary);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
}

.contact-method h4 {
    font-size: 1.1rem;
    margin-bottom: 5px;
}

.contact-method p {
    color: var(--text-muted);
}

.contact-form {
    background: var(--card-bg);
    padding: 40px;
    border-radius: 16px;
    box-shadow: var(--shadow);
    border: 1px solid var(--border);
}

.form-group {
    position: relative;
    margin-bottom: 30px;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 15px 20px;
    border: 1px solid var(--border);
    border-radius: 8px;
    background: transparent;
    color: var(--text-main);
    font-size: 1rem;
    font-family: var(--font-body);
    transition: var(--transition);
    outline: none;
}

.form-group textarea {
    resize: vertical;
    min-height: 150px;
}

.form-group label {
    position: absolute;
    top: 50%;
    left: 20px;
    transform: translateY(-50%);
    color: var(--text-muted);
    transition: var(--transition);
    pointer-events: none;
    background: var(--card-bg);
    padding: 0 5px;
}

.form-group textarea ~ label {
    top: 25px;
}

.form-group input:focus,
.form-group textarea:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 4px rgba(249, 115, 22, 0.1);
}

.form-group input:focus ~ label,
.form-group input:valid ~ label,
.form-group textarea:focus ~ label,
.form-group textarea:valid ~ label {
    top: 0;
    font-size: 0.85rem;
    color: var(--primary);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: transparent;
}

.submit-btn {
    width: 100%;
    justify-content: center;
    padding: 15px;
    font-size: 1.1rem;
}

/* =======================================
   Footer
======================================= */
.footer {
    background: var(--darker);
    color: white;
    padding: 60px 0 20px;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 30px;
    margin-bottom: 40px;
}

.footer-brand h2 {
    color: white;
    font-size: 2rem;
    margin-bottom: 10px;
}

.footer-brand span {
    color: var(--primary);
}

.footer-brand p {
    color: #cbd5e1;
    max-width: 300px;
}

.footer-links {
    display: flex;
    gap: 20px;
}

.footer-links a {
    color: #cbd5e1;
}

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

.footer-bottom {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid rgba(255,255,255,0.1);
    color: #cbd5e1;
    font-size: 0.9rem;
}

/* =======================================
   Helper Classes & Animations
======================================= */
.loader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--light);
    z-index: 9999;
    display: flex;
    justify-content: center;
    align-items: center;
    transition: opacity 0.5s ease, visibility 0.5s ease;
}

.loader.hidden {
    opacity: 0;
    visibility: hidden;
}

.loader-spinner {
    width: 50px;
    height: 50px;
    border: 5px solid rgba(249, 115, 22, 0.2);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

/* Reveal Animations */
.reveal-up {
    opacity: 0;
    transform: translateY(50px);
    transition: all 0.8s ease;
}

.reveal-left {
    opacity: 0;
    transform: translateX(-50px);
    transition: all 0.8s ease;
}

.reveal-right {
    opacity: 0;
    transform: translateX(50px);
    transition: all 0.8s ease;
}

.reveal-up.active,
.reveal-left.active,
.reveal-right.active {
    opacity: 1;
    transform: translate(0);
}

@keyframes fadeIn {
    from { opacity: 0; transform: scale(0.95); }
    to { opacity: 1; transform: scale(1); }
}

.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 45px;
    height: 45px;
    background: var(--primary);
    color: white;
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 1.2rem;
    box-shadow: 0 5px 15px rgba(0,0,0,0.2);
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    z-index: 99;
}

.back-to-top.show {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    transform: translateY(-5px);
    background: var(--primary-dark);
}

/* =======================================
   Responsive Design
======================================= */
@media (max-width: 992px) {
    .about-grid,
    .contact-wrapper {
        grid-template-columns: 1fr;
    }
    
    .about-image-container {
        max-width: 500px;
        margin: 0 auto;
    }
    
    .section-title {
        font-size: 2rem;
    }
}

@media (max-width: 768px) {
    .section {
        padding: 60px 0;
    }

    .hero {
        text-align: center;
        padding-top: 80px;
    }

    .hero-content {
        margin: 0 auto;
    }

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

    .hamburger {
        display: block;
    }

    .nav-links {
        position: fixed;
        top: 0;
        right: -100%;
        width: 70%;
        height: 100vh;
        background: var(--nav-bg);
        backdrop-filter: blur(15px);
        flex-direction: column;
        justify-content: center;
        align-items: center;
        transition: 0.5s ease;
        box-shadow: -10px 0 30px rgba(0,0,0,0.1);
    }

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

    .hamburger.active .bar:nth-child(1) {
        transform: translateY(8px) rotate(45deg);
    }

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

    .hamburger.active .bar:nth-child(3) {
        transform: translateY(-8px) rotate(-45deg);
    }

    .hero-title {
        font-size: 2.8rem;
    }
    
    .hero-cta {
        flex-direction: column;
        gap: 15px;
    }
    
    .btn {
        justify-content: center;
    }
    
    .footer-content {
        flex-direction: column;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .section-title {
        font-size: 2rem;
    }
    .hero-title {
        font-size: 2.2rem;
    }
    .about-content h3 {
        font-size: 1.5rem;
    }
    .stat-card {
        padding: 20px;
    }
    .stat-card h3, .stat-card span {
        font-size: 2rem;
    }
    .project-filters {
        gap: 8px;
    }
    .filter-btn {
        padding: 6px 16px;
        font-size: 0.85rem;
    }
}