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

:root {
    /* Color Theme - Solar Energy Inspired */
    --primary-yellow: #FDB913;
    --primary-orange: #FF9800;
    --primary-blue: #1E3A8A;
    --primary-green: #1B7B3F;
    --text-dark: #1a1a1a;
    --text-light: #666666;
    --white: #ffffff;
    --light-gray: #f8f9fa;
    --border-gray: #e9ecef;
    
    /* Transitions */
    --transition: all 0.3s ease;
    
    /* Spacing */
    --spacing: 1rem;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    color: var(--text-dark);
    line-height: 1.6;
    background-color: var(--white);
}

/* ============================================
   UTILITY CLASSES
   ============================================ */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing);
}

.section-title {
    text-align: center;
    margin-bottom: 3rem;
    animation: fadeInDown 0.6s ease-out;
}

.section-title h2 {
    font-size: 2.5rem;
    color: var(--primary-blue);
    margin-bottom: 1rem;
}

.section-title .title-line {
    width: 80px;
    height: 4px;
    background: linear-gradient(to right, var(--primary-yellow), var(--primary-orange));
    margin: 0 auto 1rem;
    border-radius: 2px;
}

.section-subtitle {
    font-size: 1.1rem;
    color: var(--text-light);
    margin-top: 0.5rem;
}

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

.btn-primary {
    background: linear-gradient(135deg, var(--primary-yellow), var(--primary-orange));
    color: var(--text-dark);
    box-shadow: 0 4px 15px rgba(253, 185, 19, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(253, 185, 19, 0.4);
}

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

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

/* ============================================
   ANIMATIONS
   ============================================ */
@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

@keyframes slideInLeft {
    from {
        opacity: 0;
        transform: translateX(-30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

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

/* ============================================
   NAVBAR
   ============================================ */
.navbar {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: var(--white);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    transition: var(--transition);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-brand {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-blue);
    display: flex;
    align-items: center;
    gap: 0.8rem;
}

.nav-logo {
    height: 50px;
    width: auto;
    object-fit: contain;
    transition: var(--transition);
}

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

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

.nav-link {
    color: var(--text-dark);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: -5px;
    left: 0;
    background: linear-gradient(to right, var(--primary-yellow), var(--primary-orange));
    transition: width 0.3s ease;
}

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

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

/* Mobile Menu Toggle */
.nav-toggle {
    display: none;
    flex-direction: column;
    cursor: pointer;
    gap: 5px;
}

.nav-toggle span {
    width: 25px;
    height: 3px;
    background: var(--primary-blue);
    border-radius: 2px;
    transition: var(--transition);
}

.nav-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(10px, 10px);
}

.nav-toggle.active span:nth-child(2) {
    opacity: 0;
}

.nav-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -7px);
}

/* ============================================
   HERO SECTION
   ============================================ */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, rgba(30, 58, 138, 0.7), rgba(27, 123, 63, 0.7)), url('poster/SRI VAREE SOLAR BG.png') center/cover no-repeat;
    position: relative;
    overflow: hidden;
    flex-direction: column;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0.1;
    z-index: 1;
}

.hero-shape {
    position: absolute;
    width: 400px;
    height: 400px;
    background: var(--primary-yellow);
    border-radius: 50%;
    top: -100px;
    right: -50px;
    animation: float 6s ease-in-out infinite;
}

@keyframes float {
    0%, 100% {
        transform: translateY(0px);
    }
    50% {
        transform: translateY(20px);
    }
}

.hero-title {
    display: none;
}

.hero-tagline {
    position: relative;
    z-index: 2;
    font-size: 1.8rem;
    margin-bottom: 1rem;
    margin-top: 0;
    color: var(--primary-yellow);
    font-weight: 300;
}

.hero-subtitle {
    position: relative;
    z-index: 2;
    font-size: 1.2rem;
    margin-bottom: 2rem;
    color: rgba(255, 255, 255, 0.8);
}

.hero-buttons {
    position: relative;
    z-index: 2;
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

/* ============================================
   ABOUT SECTION
   ============================================ */
.about {
    padding: 5rem 0;
    background: var(--light-gray);
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: center;
}

.about-text {
    animation: slideInLeft 0.6s ease-out;
}

.about-text p {
    margin-bottom: 1.5rem;
    color: var(--text-light);
    font-size: 1.05rem;
    line-height: 1.8;
}

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

.stat {
    text-align: center;
    padding: 1.5rem;
    background: var(--white);
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    transition: var(--transition);
}

.stat:hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
}

.stat h3 {
    font-size: 2rem;
    color: var(--primary-yellow);
    margin-bottom: 0.5rem;
}

.stat p {
    color: var(--text-light);
    margin-bottom: 0;
}

.about-image {
    animation: slideInRight 0.6s ease-out;
}

.about-image img {
    width: 100%;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
    transition: var(--transition);
}

.about-image img:hover {
    transform: scale(1.02);
}

/* ============================================
   SERVICES SECTION
   ============================================ */
.services {
    padding: 5rem 0;
    background: var(--white);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.service-card {
    background: var(--white);
    padding: 2rem;
    border-radius: 15px;
    text-align: center;
    transition: var(--transition);
    border: 2px solid var(--border-gray);
    animation: fadeInUp 0.6s ease-out;
    animation-fill-mode: both;
}

.service-card:nth-child(1) { animation-delay: 0.1s; }
.service-card:nth-child(2) { animation-delay: 0.2s; }
.service-card:nth-child(3) { animation-delay: 0.3s; }
.service-card:nth-child(4) { animation-delay: 0.4s; }
.service-card:nth-child(5) { animation-delay: 0.5s; }
.service-card:nth-child(6) { animation-delay: 0.6s; }
.service-card:nth-child(7) { animation-delay: 0.7s; }
.service-card:nth-child(8) { animation-delay: 0.8s; }

.service-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 40px rgba(253, 185, 19, 0.2);
    border-color: var(--primary-yellow);
}

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

.service-card:hover .service-icon {
    transform: scale(1.15) rotate(10deg);
    color: var(--primary-orange);
}

.service-card h3 {
    font-size: 1.3rem;
    color: var(--primary-blue);
    margin-bottom: 1rem;
}

.service-card p {
    color: var(--text-light);
    line-height: 1.7;
}

/* ============================================
   PROJECTS / GALLERY SECTION
   ============================================ */
.projects {
    padding: 5rem 0;
    background: var(--light-gray);
}

.gallery-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 1.5rem;
}

.gallery-item {
    position: relative;
    overflow: hidden;
    border-radius: 15px;
    aspect-ratio: 3/2;
    cursor: pointer;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    animation: scaleIn 0.6s ease-out;
    background: var(--light-gray);
}

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

.gallery-item::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(30, 58, 138, 0.7);
    opacity: 0;
    transition: var(--transition);
}

.gallery-overlay {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: var(--white);
    opacity: 0;
    transition: var(--transition);
    z-index: 10;
    font-size: 2rem;
}

.gallery-item:hover img {
    transform: scale(1.1);
}

.gallery-item:hover::after {
    opacity: 1;
}

.gallery-item:hover .gallery-overlay {
    opacity: 1;
}

/* ============================================
   LIGHTBOX MODAL
   ============================================ */
.lightbox {
    display: none;
    position: fixed;
    z-index: 2000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.9);
    animation: fadeIn 0.3s ease-out;
}

.lightbox.active {
    display: flex;
    align-items: center;
    justify-content: center;
    flex-direction: column;
}

.lightbox-image {
    max-width: 90%;
    max-height: 80vh;
    object-fit: contain;
    animation: scaleIn 0.3s ease-out;
}

.lightbox-caption {
    color: var(--white);
    text-align: center;
    margin-top: 1rem;
    font-size: 1.1rem;
}

.close-lightbox {
    position: absolute;
    top: 30px;
    right: 40px;
    color: var(--white);
    font-size: 40px;
    font-weight: bold;
    cursor: pointer;
    transition: var(--transition);
    z-index: 2001;
}

.close-lightbox:hover {
    color: var(--primary-yellow);
}

.lightbox-nav {
    position: absolute;
    width: 100%;
    display: flex;
    justify-content: space-between;
    padding: 0 2rem;
    top: 50%;
    transform: translateY(-50%);
}

.prev-lightbox,
.next-lightbox {
    background: rgba(255, 255, 255, 0.2);
    border: none;
    color: var(--white);
    font-size: 2rem;
    padding: 1rem;
    cursor: pointer;
    border-radius: 5px;
    transition: var(--transition);
}

.prev-lightbox:hover,
.next-lightbox:hover {
    background: var(--primary-yellow);
    color: var(--text-dark);
}

/* ============================================
   CONTACT SECTION
   ============================================ */
.contact {
    padding: 5rem 0;
    background: var(--white);
}

.contact-wrapper {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
}

.contact-info {
    animation: slideInLeft 0.6s ease-out;
}

.info-item {
    display: flex;
    gap: 1.5rem;
    margin-bottom: 2rem;
    padding: 1.5rem;
    background: var(--light-gray);
    border-radius: 10px;
    transition: var(--transition);
}

.info-item:hover {
    background: linear-gradient(135deg, rgba(253, 185, 19, 0.1), rgba(27, 123, 63, 0.1));
    transform: translateX(5px);
}

.info-icon {
    font-size: 1.8rem;
    color: var(--primary-yellow);
    min-width: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.info-content h3 {
    color: var(--primary-blue);
    margin-bottom: 0.5rem;
}

.info-content p {
    color: var(--text-light);
}

.info-content a {
    color: var(--primary-orange);
    text-decoration: none;
    transition: var(--transition);
}

.info-content a:hover {
    text-decoration: underline;
}

.contact-form {
    animation: slideInRight 0.6s ease-out;
}

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

.contact-form input,
.contact-form textarea {
    width: 100%;
    padding: 1rem;
    border: 2px solid var(--border-gray);
    border-radius: 8px;
    font-family: inherit;
    font-size: 1rem;
    transition: var(--transition);
}

.contact-form input:focus,
.contact-form textarea:focus {
    outline: none;
    border-color: var(--primary-yellow);
    box-shadow: 0 0 10px rgba(253, 185, 19, 0.2);
}

.contact-form button {
    width: 100%;
}

/* ============================================
   FOOTER
   ============================================ */
.footer {
    background: var(--primary-blue);
    color: var(--white);
    padding: 3rem 0 1rem;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-section h3 {
    margin-bottom: 1rem;
    color: var(--primary-yellow);
}

.footer-section p {
    color: rgba(255, 255, 255, 0.7);
    line-height: 1.6;
}

.footer-section ul {
    list-style: none;
}

.footer-section ul li {
    margin-bottom: 0.5rem;
}

.footer-section ul li a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    transition: var(--transition);
}

.footer-section ul li a:hover {
    color: var(--primary-yellow);
    padding-left: 5px;
}

.footer-brand {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
}

.footer-logo {
    height: 80px;
    width: auto;
    object-fit: contain;
    margin-bottom: 1rem;
    opacity: 0.9;
    transition: var(--transition);
}

.footer-brand:hover .footer-logo {
    opacity: 1;
    transform: scale(1.05);
}

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

.social-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    color: var(--white);
    text-decoration: none;
    transition: var(--transition);
}

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

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: rgba(255, 255, 255, 0.6);
}

/* ============================================
   RESPONSIVE DESIGN
   ============================================ */
@media (max-width: 768px) {
    /* Navbar */
    .nav-logo {
        height: 40px;
    }

    .nav-toggle {
        display: flex;
    }

    .nav-menu {
        display: none;
        flex-direction: column;
        position: absolute;
        top: 70px;
        left: 0;
        width: 100%;
        background: var(--white);
        padding: 2rem;
        gap: 1rem;
        box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    }

    .nav-menu.active {
        display: flex;
    }

    .nav-link::after {
        display: none;
    }

    /* Hero */
    .hero {
        min-height: 70vh;
    }

    .hero-tagline {
        font-size: 1.3rem;
    }

    .hero-subtitle {
        font-size: 1rem;
    }

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

    .btn {
        width: 100%;
        max-width: 300px;
    }

    /* About */
    .about-content {
        grid-template-columns: 1fr;
    }

    .about-stats {
        grid-template-columns: 1fr;
    }

    /* Services */
    .services-grid {
        grid-template-columns: 1fr;
    }

    /* Contact */
    .contact-wrapper {
        grid-template-columns: 1fr;
    }

    .contact-form,
    .contact-info {
        animation: fadeInUp 0.6s ease-out;
    }

    /* Section Title */
    .section-title h2 {
        font-size: 2rem;
    }
}

@media (max-width: 480px) {
    .section-title h2 {
        font-size: 1.8rem;
    }

    .nav-logo {
        height: 35px;
    }

    .hero-buttons {
        gap: 0.5rem;
    }

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

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

    .stat {
        padding: 1rem;
    }

    .stat h3 {
        font-size: 1.5rem;
    }

    .close-lightbox {
        top: 15px;
        right: 15px;
        font-size: 30px;
    }

    .lightbox-nav {
        padding: 0 1rem;
    }

    .prev-lightbox,
    .next-lightbox {
        padding: 0.5rem;
        font-size: 1.5rem;
    }

    .footer-logo {
        height: 60px;
    }
}

/* ============================================
   PRINT STYLES
   ============================================ */
@media print {
    .navbar,
    .hero-buttons,
    .contact-form,
    .footer {
        display: none;
    }
}

/* ============================================
   ACCESSIBILITY
   ============================================ */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* Scroll Bar Styling */
::-webkit-scrollbar {
    width: 10px;
}

::-webkit-scrollbar-track {
    background: var(--light-gray);
}

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

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