/* ============================================
   NBG Enerji - Modern Energy Website Styles
   ============================================ */

:root {
    /* Primary Colors - Green Energy Theme */
    --primary: #10b981;
    --primary-dark: #059669;
    --primary-light: #34d399;
    --secondary: #3b82f6;
    --accent: #f59e0b;

    /* Dark Theme Colors */
    --dark: #0f172a;
    --dark-lighter: #1e293b;
    --dark-card: #1a1f35;

    /* Text Colors */
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;

    /* Gradients */
    --gradient-primary: linear-gradient(135deg, #10b981 0%, #3b82f6 100%);
    --gradient-hero: linear-gradient(135deg, rgba(16, 185, 129, 0.1) 0%, rgba(59, 130, 246, 0.1) 100%);
    --gradient-card: linear-gradient(145deg, rgba(255, 255, 255, 0.05) 0%, rgba(255, 255, 255, 0.02) 100%);

    /* Borders & Shadows */
    --border-color: rgba(255, 255, 255, 0.1);
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.15);
    --shadow-lg: 0 8px 30px rgba(0, 0, 0, 0.2);
    --shadow-glow: 0 0 40px rgba(16, 185, 129, 0.3);

    /* Border Radius */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-xl: 30px;

    /* Transitions */
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ============================================
   Base Styles
   ============================================ */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, sans-serif;
    background-color: var(--dark);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

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

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

/* ============================================
   Typography
   ============================================ */
h1,
h2,
h3,
h4,
h5,
h6 {
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 1rem;
}

h1 {
    font-size: clamp(2.5rem, 5vw, 4rem);
}

h2 {
    font-size: clamp(2rem, 4vw, 3rem);
}

h3 {
    font-size: clamp(1.5rem, 3vw, 2rem);
}

h4 {
    font-size: clamp(1.25rem, 2vw, 1.5rem);
}

.section-subtitle {
    color: var(--primary);
    font-weight: 600;
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 2px;
    margin-bottom: 0.5rem;
}

.section-title {
    margin-bottom: 1rem;
}

.section-description {
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto 3rem;
}

/* ============================================
   Buttons
   ============================================ */
.btn {
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius-md);
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    transition: var(--transition);
    border: none;
    cursor: pointer;
}

.btn-gradient {
    background: var(--gradient-primary);
    color: white;
    box-shadow: 0 4px 15px rgba(16, 185, 129, 0.4);
}

.btn-gradient:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 25px rgba(16, 185, 129, 0.5);
    color: white;
}

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

.btn-outline:hover {
    background: var(--primary);
    color: white;
}

.btn-lg {
    padding: 1rem 2rem;
    font-size: 1.1rem;
}

/* ============================================
   Navigation
   ============================================ */
.navbar {
    background: rgba(15, 23, 42, 0.9);
    backdrop-filter: blur(20px);
    padding: 1rem 0;
    transition: var(--transition);
    border-bottom: 1px solid transparent;
}

.navbar.scrolled {
    background: rgba(15, 23, 42, 0.98);
    border-bottom: 1px solid var(--border-color);
    box-shadow: var(--shadow-lg);
}

.navbar-brand {
    font-size: 1.5rem;
    color: var(--text-primary) !important;
    display: flex;
    align-items: center;
}

.navbar-brand i {
    color: var(--primary);
    font-size: 1.75rem;
}

.nav-link {
    color: var(--text-secondary) !important;
    font-weight: 500;
    padding: 0.5rem 1rem !important;
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 2px;
    background: var(--gradient-primary);
    transition: var(--transition);
    transform: translateX(-50%);
}

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

.nav-link:hover::after,
.nav-link.active::after {
    width: 80%;
}

.navbar-toggler {
    border-color: var(--border-color);
}

.navbar-toggler-icon {
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba%28255, 255, 255, 0.75%29' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
}

/* ============================================
   Hero Section
   ============================================ */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    padding: 120px 0 80px;
    background: var(--gradient-hero);
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 80%;
    height: 150%;
    background: radial-gradient(circle, rgba(16, 185, 129, 0.1) 0%, transparent 70%);
    pointer-events: none;
}

.hero::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 200px;
    background: linear-gradient(to top, var(--dark), transparent);
    pointer-events: none;
}

.hero-content {
    position: relative;
    z-index: 1;
}

.hero-title {
    font-size: clamp(2.5rem, 6vw, 4.5rem);
    font-weight: 800;
    margin-bottom: 1.5rem;
    background: linear-gradient(135deg, var(--text-primary) 0%, var(--primary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: 2rem;
    max-width: 500px;
}

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

.hero-image {
    position: relative;
    z-index: 1;
}

.hero-image img {
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-glow);
}

/* Floating elements */
.floating-card {
    position: absolute;
    background: var(--gradient-card);
    backdrop-filter: blur(10px);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 1rem 1.5rem;
    animation: float 6s ease-in-out infinite;
}

@keyframes float {

    0%,
    100% {
        transform: translateY(0);
    }

    50% {
        transform: translateY(-20px);
    }
}

/* ============================================
   Feature Cards
   ============================================ */
.features-section {
    padding: 80px 0;
    position: relative;
}

.feature-card {
    background: var(--gradient-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 2rem;
    height: 100%;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--gradient-primary);
    opacity: 0;
    transition: var(--transition);
}

.feature-card:hover {
    transform: translateY(-10px);
    border-color: rgba(16, 185, 129, 0.3);
    box-shadow: var(--shadow-glow);
}

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

.feature-icon {
    width: 60px;
    height: 60px;
    background: var(--gradient-primary);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: white;
    margin-bottom: 1.5rem;
}

.feature-title {
    font-size: 1.25rem;
    margin-bottom: 0.75rem;
}

.feature-text {
    color: var(--text-secondary);
    margin: 0;
}

/* ============================================
   About Section
   ============================================ */
.about-section {
    padding: 100px 0;
    background: linear-gradient(180deg, var(--dark) 0%, var(--dark-lighter) 100%);
}

.about-content {
    padding-right: 3rem;
}

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

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

.stat-item {
    text-align: center;
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--primary);
    display: block;
}

.stat-label {
    color: var(--text-secondary);
    font-size: 0.875rem;
}

/* ============================================
   Services Section
   ============================================ */
.services-section {
    padding: 100px 0;
}

.service-card {
    background: var(--gradient-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    overflow: hidden;
    height: 100%;
    transition: var(--transition);
}

.service-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-glow);
}

.service-image {
    height: 200px;
    overflow: hidden;
    position: relative;
}

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

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

.service-image-placeholder {
    width: 100%;
    height: 100%;
    background: var(--gradient-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 4rem;
    color: white;
}

.service-content {
    padding: 1.5rem;
}

.service-title {
    font-size: 1.25rem;
    margin-bottom: 0.75rem;
}

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

.service-link {
    color: var(--primary);
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.service-link:hover {
    color: var(--primary-light);
    gap: 0.75rem;
}

/* ============================================
   Gallery Section
   ============================================ */
.gallery-section {
    padding: 100px 0;
    background: var(--dark-lighter);
}

.gallery-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
}

.gallery-item {
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
    aspect-ratio: 4/3;
}

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

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

.gallery-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(0, 0, 0, 0.8), transparent);
    display: flex;
    align-items: flex-end;
    padding: 1.5rem;
    opacity: 0;
    transition: var(--transition);
}

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

.gallery-placeholder {
    width: 100%;
    height: 100%;
    background: var(--gradient-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 3rem;
    color: white;
}

/* ============================================
   Testimonials Section
   ============================================ */
.testimonials-section {
    padding: 100px 0;
}

.testimonial-card {
    background: var(--gradient-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 2rem;
    height: 100%;
}

.testimonial-rating {
    color: var(--accent);
    font-size: 1.25rem;
    margin-bottom: 1rem;
}

.testimonial-text {
    color: var(--text-secondary);
    font-size: 1.1rem;
    font-style: italic;
    margin-bottom: 1.5rem;
    line-height: 1.8;
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.testimonial-avatar {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: var(--gradient-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: 700;
    font-size: 1.25rem;
}

.testimonial-name {
    font-weight: 600;
    margin-bottom: 0.25rem;
}

.testimonial-location {
    color: var(--text-muted);
    font-size: 0.875rem;
}

/* ============================================
   Blog Section
   ============================================ */
.blog-section {
    padding: 100px 0;
    background: var(--dark-lighter);
}

.blog-card {
    background: var(--gradient-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    overflow: hidden;
    height: 100%;
    transition: var(--transition);
}

.blog-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
}

.blog-image {
    height: 200px;
    overflow: hidden;
}

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

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

.blog-image-placeholder {
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 3rem;
    color: white;
}

.blog-content {
    padding: 1.5rem;
}

.blog-date {
    color: var(--primary);
    font-size: 0.875rem;
    font-weight: 500;
    margin-bottom: 0.5rem;
}

.blog-title {
    font-size: 1.25rem;
    margin-bottom: 0.75rem;
    transition: var(--transition);
}

.blog-card:hover .blog-title {
    color: var(--primary);
}

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

.blog-link {
    color: var(--primary);
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

/* ============================================
   Contact Section
   ============================================ */
.contact-section {
    padding: 100px 0;
}

.contact-info {
    background: var(--gradient-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 2.5rem;
    height: 100%;
}

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

.contact-icon {
    width: 50px;
    height: 50px;
    background: var(--gradient-primary);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    color: white;
    flex-shrink: 0;
}

.contact-label {
    font-weight: 600;
    margin-bottom: 0.25rem;
}

.contact-value {
    color: var(--text-secondary);
}

.contact-value a {
    color: var(--text-secondary);
}

.contact-value a:hover {
    color: var(--primary);
}

.contact-form {
    background: var(--gradient-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 2.5rem;
}

.form-control {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    padding: 0.875rem 1rem;
    transition: var(--transition);
}

.form-control:focus {
    background: rgba(255, 255, 255, 0.08);
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.1);
    color: var(--text-primary);
}

.form-control::placeholder {
    color: var(--text-muted);
}

.form-label {
    font-weight: 500;
    margin-bottom: 0.5rem;
}

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

/* ============================================
   Footer
   ============================================ */
.footer {
    background: var(--dark-lighter);
    padding: 80px 0 30px;
    border-top: 1px solid var(--border-color);
}

.footer-brand {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1.5rem;
    font-weight: 700;
}

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

.footer-title {
    font-size: 1.125rem;
    margin-bottom: 1.5rem;
    position: relative;
}

.footer-title::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 0;
    width: 30px;
    height: 2px;
    background: var(--gradient-primary);
}

.footer-links {
    list-style: none;
    padding: 0;
    margin: 0;
}

.footer-links li {
    margin-bottom: 0.75rem;
}

.footer-links a {
    color: var(--text-secondary);
    transition: var(--transition);
}

.footer-links a:hover {
    color: var(--primary);
    padding-left: 5px;
}

.footer-contact {
    list-style: none;
    padding: 0;
    margin: 0;
}

.footer-contact li {
    display: flex;
    gap: 0.75rem;
    margin-bottom: 1rem;
    color: var(--text-secondary);
}

.footer-contact i {
    color: var(--primary);
    font-size: 1.25rem;
}

.footer-contact a {
    color: var(--text-secondary);
}

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

.social-links {
    display: flex;
    gap: 0.75rem;
}

.social-link {
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    transition: var(--transition);
}

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

.footer-divider {
    border-color: var(--border-color);
    margin: 2rem 0;
}

.footer-bottom {
    text-align: center;
    color: var(--text-muted);
}

/* ============================================
   Page Headers
   ============================================ */
.page-header {
    padding: 150px 0 80px;
    background: var(--gradient-hero);
    text-align: center;
    position: relative;
}

.page-header::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 100px;
    background: linear-gradient(to top, var(--dark), transparent);
}

.page-title {
    font-size: clamp(2.5rem, 5vw, 3.5rem);
    margin-bottom: 1rem;
}

.page-subtitle {
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

/* ============================================
   Responsive Design
   ============================================ */
@media (max-width: 991px) {
    .navbar-collapse {
        background: var(--dark-lighter);
        padding: 1rem;
        border-radius: var(--radius-md);
        margin-top: 1rem;
    }

    .hero {
        text-align: center;
    }

    .hero-subtitle {
        margin: 0 auto 2rem;
    }

    .hero-buttons {
        justify-content: center;
    }

    .about-content {
        padding-right: 0;
        margin-bottom: 3rem;
    }

    .about-stats {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (max-width: 767px) {
    .about-stats {
        grid-template-columns: 1fr;
        gap: 1rem;
    }

    .stat-item {
        display: flex;
        align-items: center;
        gap: 1rem;
        text-align: left;
    }

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

/* ============================================
   Utility Classes
   ============================================ */
.text-gradient {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.bg-glass {
    background: var(--gradient-card);
    backdrop-filter: blur(10px);
    border: 1px solid var(--border-color);
}

/* Animations */
@keyframes pulse {

    0%,
    100% {
        transform: scale(1);
    }

    50% {
        transform: scale(1.05);
    }
}

.animate-pulse {
    animation: pulse 2s ease-in-out infinite;
}

/* Loading states */
.skeleton {
    background: linear-gradient(90deg, var(--dark-lighter) 25%, var(--dark-card) 50%, var(--dark-lighter) 75%);
    background-size: 200% 100%;
    animation: skeleton 1.5s ease-in-out infinite;
}

@keyframes skeleton {
    0% {
        background-position: 200% 0;
    }

    100% {
        background-position: -200% 0;
    }
}

/* ============================================
   WhatsApp Floating Button
   ============================================ */
.whatsapp-float {
    position: fixed;
    width: 60px;
    height: 60px;
    bottom: 30px;
    right: 30px;
    background-color: #25D366;
    color: #fff;
    border-radius: 50%;
    text-align: center;
    font-size: 30px;
    box-shadow: 0 4px 20px rgba(37, 211, 102, 0.5);
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
    animation: whatsapp-pulse 2s infinite;
}

.whatsapp-float:hover {
    background-color: #128C7E;
    color: #fff;
    transform: scale(1.1);
    box-shadow: 0 6px 30px rgba(37, 211, 102, 0.7);
}

@keyframes whatsapp-pulse {

    0%,
    100% {
        box-shadow: 0 0 0 0 rgba(37, 211, 102, 0.7);
    }

    70% {
        box-shadow: 0 0 0 15px rgba(37, 211, 102, 0);
    }
}

/* Navbar Logo Image */
.navbar-logo {
    max-height: 40px;
    width: auto;
}

@media (max-width: 768px) {
    .whatsapp-float {
        width: 50px;
        height: 50px;
        bottom: 20px;
        right: 20px;
        font-size: 24px;
    }
}