:root {
    --primary-color: #FFFFFF;
    /* Text is now white */
    --secondary-color: #FFC300;
    --accent-color: #00A8E8;
    --text-color: #F0F0F0;
    /* Off-white for body text */
    --glass-bg: rgba(255, 255, 255, 0.1);
    --glass-border: 1px solid rgba(255, 255, 255, 0.3);
    --glass-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.2);
    --card-bg: rgba(255, 255, 255, 0.1);
    --turkcell-blue: #a3c2ff;
    /* Lighter for dark bg */
    --superonline-blue: #6dd5fa;
    --superbox-yellow: #FFC300;
    --tech-orange: #ffab91;
}

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

body {
    font-family: 'Outfit', sans-serif;
    /* Deep Blue Gradient Background representing Turkcell/Technology */
    background: linear-gradient(135deg, #003F88 0%, #0060c0 50%, #00A8E8 100%);
    background-attachment: fixed;
    color: var(--text-color);
    line-height: 1.6;
}

/* Header */
.glass-header {
    background: rgba(0, 20, 50, 0.6);
    /* Transparent dark blue */
    backdrop-filter: blur(20px);
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    padding: 1rem 0;
}

.glass-header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo-link {
    display: flex;
    align-items: center;
    text-decoration: none;
    color: white;
    /* White text */
    gap: 10px;
}

.logo-img {
    height: 40px;
}

.logo-text {
    font-size: 1.5rem;
    font-weight: 800;
    letter-spacing: -0.5px;
}

.logo-text .highlight {
    color: var(--secondary-color);
}

nav ul {
    display: flex;
    list-style: none;
    gap: 20px;
}

nav a {
    text-decoration: none;
    color: rgba(255, 255, 255, 0.9);
    /* White text */
    font-weight: 600;
    transition: color 0.3s;
}

nav a:hover,
nav a.active {
    color: var(--secondary-color);
    /* Yellow on hover/active */
}

/* Hero Section */
.hero {
    background: transparent;
    /* Background is now global */
    color: white;
    text-align: center;
    padding: 4rem 0 6rem;
    margin-bottom: 3rem;
    /* Removed border-radius */
}

.hero h1 {
    font-size: 3rem;
    margin-bottom: 0.5rem;
}

.hero .subtitle {
    font-size: 1.2rem;
    opacity: 0.9;
    margin-bottom: 2rem;
}

.hero-buttons {
    display: flex;
    justify-content: center;
    gap: 1.5rem;
    flex-wrap: wrap;
}

.hero-btn {
    background: rgba(0, 0, 0, 0.2);
    /* Darker glass for contrast */
    backdrop-filter: blur(15px);
    -webkit-backdrop-filter: blur(15px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    /* Subtle white border */
    color: white;
    padding: 1.5rem 2rem;
    border-radius: 1rem;
    text-decoration: none;
    display: flex;
    flex-direction: column;
    align-items: center;
    width: 160px;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

.hero-btn:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.3);
    background: rgba(255, 255, 255, 0.1);
    /* Lighten slightly on hover */
    border-color: rgba(255, 255, 255, 0.6);
}

.hero-btn .icon {
    font-size: 2rem;
    margin-bottom: 0.5rem;
    filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.3));
}

.hero-btn .text {
    font-weight: 800;
    font-size: 1rem;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

.hero-btn .sub {
    font-size: 0.8rem;
    color: #EEE;
    /* White subtext */
    opacity: 0.9;
}

/* Button Specific Colors - Brightened for Dark BG */
.turkcell-btn .text {
    color: #FFC300;
    /* Yellow for visibility */
}

.superonline-btn .text {
    color: #6dd5fa;
    /* Cyan */
}

.superbox-btn .text {
    color: #FFDE59;
    /* Bright Yellow */
}

.tech-btn .text {
    color: #ffab91;
    /* Bright Orange */
}



/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Section Titles */
.section-title {
    text-align: center;
    font-size: 2rem;
    margin-bottom: 2rem;
    color: white;
    /* White titles */
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
}

/* Cards Grid */
.cards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    margin-bottom: 4rem;
}

/* Card Styles */
.card {
    background: var(--card-bg);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    border: var(--glass-border);
    border-radius: 1.5rem;
    overflow: hidden;
    box-shadow: var(--glass-shadow);
    transition: transform 0.3s, box-shadow 0.3s;
    position: relative;
    color: var(--text-color);
}

.card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0, 147, 233, 0.3);
}

.card.popular {
    border: 3px solid var(--secondary-color);
    transform: scale(1.05);
}

.card.popular:hover {
    transform: scale(1.05) translateY(-10px);
}

.badge {
    position: absolute;
    top: 10px;
    right: 10px;
    background: var(--secondary-color);
    color: #000;
    padding: 5px 12px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 800;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    z-index: 2;
}

.card-header {
    padding: 1.5rem;
    background: rgba(255, 255, 255, 0.3);
    /* Slightly more transparent */
    text-align: center;
    border-bottom: 1px solid rgba(255, 255, 255, 0.5);
}

.card-header h3 {
    font-size: 1.2rem;
    margin-bottom: 0.5rem;
    color: var(--primary-color);
    font-weight: 700;
}

.card-header .price {
    font-size: 2rem;
    font-weight: 800;
    color: var(--primary-color);
}

.card-header .price span {
    font-size: 1rem;
    font-weight: 400;
    color: #DDD;
    /* Lighter gray for dark bg */
}

.card-body {
    padding: 1.5rem;
    text-align: center;
}

.card-body ul {
    list-style: none;
    margin-bottom: 1.5rem;
    text-align: left;
    padding-left: 1rem;
}

.card-body ul li {
    margin-bottom: 0.5rem;
    position: relative;
    padding-left: 1.5rem;
    color: var(--text-color);
    font-weight: 500;
}

.card-body ul li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--secondary-color);
    /* Yellow checkmark */
    font-weight: bold;
    filter: drop-shadow(0 1px 2px rgba(0, 0, 0, 0.1));
}

.card-body .speed,
.card-body .data {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.card-body p {
    color: #EEE;
    /* White text for dark bg */
    margin-bottom: 1.5rem;
}

.apply-btn {
    background: var(--secondary-color);
    /* Yellow for pop */
    color: #000;
    /* Black text on yellow */
    border: none;
    padding: 14px 24px;
    border-radius: 50px;
    font-weight: 800;
    cursor: pointer;
    width: 100%;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.apply-btn:hover {
    background: var(--secondary-color);
    color: #000;
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.2);
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    z-index: 2000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(5px);
}

.modal-content {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    margin: 10% auto;
    padding: 2rem;
    border-radius: 1.5rem;
    width: 90%;
    max-width: 400px;
    position: relative;
    animation: slideDown 0.3s ease;
    border: 1px solid rgba(255, 255, 255, 0.6);
    box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.2);
}

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

    to {
        transform: translateY(0);
        opacity: 1;
    }
}

.close {
    position: absolute;
    right: 20px;
    top: 15px;
    font-size: 28px;
    font-weight: bold;
    cursor: pointer;
    color: #aaa;
}

.close:hover {
    color: #000;
}

.form-group {
    margin-bottom: 1rem;
    text-align: left;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
    font-size: 0.9rem;
    color: white;
    /* Ensure visible on glass */
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 10px;
    border: 1px solid #ddd;
    border-radius: 8px;
    font-family: inherit;
}

.submit-btn {
    background: #25D366;
    /* WhatsApp Green */
    color: white;
    border: none;
    padding: 12px;
    width: 100%;
    border-radius: 8px;
    font-weight: 700;
    cursor: pointer;
    font-size: 1rem;
    transition: background 0.3s;
}

.submit-btn:hover {
    background: #128C7E;
}

/* Technical Service Page Styles */
.technical-service-section {
    padding: 4rem 0;
    min-height: 80vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

.form-container {
    background: rgba(255, 255, 255, 0.15);
    /* More transparent */
    backdrop-filter: blur(25px);
    border: var(--glass-border);
    padding: 3rem;
    border-radius: 2rem;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
    max-width: 600px;
    width: 100%;
    margin: 0 auto;
}

.form-subtitle {
    text-align: center;
    margin-bottom: 2rem;
    color: white;
    /* Contrast fix */
    font-weight: 700;
}

.tech-submit-btn {
    background: var(--tech-orange);
    margin-top: 1rem;
}

.tech-submit-btn:hover {
    background: #E64A19;
}

/* Footer */
footer {
    background: #333;
    color: white;
    text-align: center;
    padding: 2rem 0;
    margin-top: auto;
}

/* Responsive */
@media (max-width: 768px) {
    .hero h1 {
        font-size: 2rem;
    }

    .hero-btn {
        width: 100%;
        flex-direction: row;
        justify-content: flex-start;
        gap: 1rem;
        padding: 1rem;
    }

    .hero-btn .icon {
        margin-bottom: 0;
        font-size: 1.5rem;
    }

    .hero-btn .text {
        font-size: 1.1rem;
    }

    .hero-btn .sub {
        display: none;
    }
}

/* Live Chat Button */
.live-chat-btn {
    background-color: #25D366;
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 20px;
    text-decoration: none;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 8px;
    transition: background-color 0.3s, transform 0.3s;
    margin-left: 20px;
}

.live-chat-btn:hover {
    background-color: #128C7E;
    transform: scale(1.05);
}

.live-chat-btn::before {
    content: '💬';
    font-size: 1.2rem;
}

@media (max-width: 900px) {
    .glass-header .container {
        flex-wrap: wrap;
        gap: 10px;
        justify-content: center;
    }

    nav {
        order: 3;
        width: 100%;
        display: flex;
        justify-content: center;
    }

    nav ul {
        flex-wrap: wrap;
        justify-content: center;
        gap: 10px;
        padding: 0 10px;
    }

    .live-chat-btn {
        margin-left: 0;
    }
}

/* Contact Page Styles */
.contact-hero {
    background: linear-gradient(135deg, #003F88 0%, #00A8E8 100%);
    color: white;
    text-align: center;
    padding: 3rem 0;
    margin-bottom: 3rem;
}

.contact-hero h1 {
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
}

.contact-section {
    padding-bottom: 4rem;
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 2rem;
    align-items: start;
}

.contact-card {
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(10px);
    border: var(--glass-border);
    padding: 2rem;
    border-radius: 1.5rem;
    box-shadow: var(--glass-shadow);
}

.contact-card h2 {
    color: #333;
    /* Dark title for light card */
    margin-bottom: 1.5rem;
    font-size: 1.5rem;
}

.info-item {
    display: flex;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.info-item .icon {
    font-size: 1.5rem;
    background: var(--light-bg);
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
}

.info-item .details h3 {
    font-size: 1rem;
    color: #555;
    /* Dark gray for light card */
    margin-bottom: 0.2rem;
}

.info-item .details p {
    font-weight: 600;
    color: #333;
    /* Dark text */
}

.info-item .details a {
    text-decoration: none;
    color: #333;
    /* Dark text */
    transition: color 0.3s;
}

.info-item .details a:hover {
    color: var(--primary-color);
}

.social-links {
    margin-top: 2rem;
}

.social-btn.whatsapp {
    display: inline-block;
    background: #25D366;
    color: white;
    padding: 10px 20px;
    border-radius: 10px;
    text-decoration: none;
    font-weight: 700;
    transition: background 0.3s;
    width: 100%;
    text-align: center;
}

.social-btn.whatsapp:hover {
    background: #128C7E;
}

.map-container {
    border-radius: 1.5rem;
    overflow: hidden;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
    height: 100%;
    min-height: 450px;
}

@media (max-width: 768px) {
    .contact-grid {
        grid-template-columns: 1fr;
    }

    .map-container {
        min-height: 300px;
    }
}

/* Floating WhatsApp Button */
.float-whatsapp {
    position: fixed;
    width: 60px;
    height: 60px;
    bottom: 25px;
    right: 25px;
    background-color: #25d366;
    color: #FFF;
    border-radius: 50px;
    text-align: center;
    font-size: 30px;
    box-shadow: 2px 2px 3px #999;
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    transition: all 0.3s ease;
    animation: float 2s infinite ease-in-out;
}

.float-whatsapp:hover {
    background-color: #128C7E;
    transform: scale(1.1);
}

@keyframes float {
    0% {
        box-shadow: 0 5px 15px 0px rgba(0, 0, 0, 0.6);
        transform: translatey(0px);
    }

    50% {
        box-shadow: 0 25px 15px 0px rgba(0, 0, 0, 0.2);
        transform: translatey(-10px);
    }

    100% {
        box-shadow: 0 5px 15px 0px rgba(0, 0, 0, 0.6);
        transform: translatey(0px);
    }
}

/* Infrastructure Check Section */
.infra-section {
    background: linear-gradient(135deg, #2855AC 0%, #00A4E4 100%);
    padding: 4rem 0;
    color: white;
    margin: 2rem 0;
    border-radius: 1rem;
}

.infra-box {
    background: rgba(255, 255, 255, 0.15);
    /* Slightly lighter */
    backdrop-filter: blur(15px);
    /* Stronger blur */
    border: 1px solid rgba(255, 255, 255, 0.4);
    padding: 3rem;
    border-radius: 1.5rem;
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
    box-shadow: 0 8px 32px 0 rgba(31, 38, 135, 0.2);
}

.infra-box h2 {
    font-size: 2rem;
    margin-bottom: 1rem;
}

.infra-form {
    display: flex;
    gap: 1rem;
    margin-top: 2rem;
    flex-wrap: wrap;
}

.infra-form input {
    flex: 2;
    padding: 15px;
    border: none;
    border-radius: 50px;
    font-size: 1rem;
    color: #333;
}

.infra-form button {
    flex: 1;
    background: var(--secondary-color);
    color: #000;
    border: none;
    border-radius: 50px;
    padding: 15px 30px;
    font-weight: 800;
    cursor: pointer;
    font-size: 1rem;
    transition: transform 0.3s;
}

.infra-form button:hover {
    transform: scale(1.05);
}

/* Testimonials Section */
.testimonials-section {
    padding: 4rem 0;
    background: transparent;
    /* Remove solid bg */
}

.testimonial-card {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border: var(--glass-border);
    padding: 2rem;
    border-radius: 1.5rem;
    box-shadow: var(--glass-shadow);
    text-align: center;
    position: relative;
    padding-top: 3rem;
}

.testimonial-card .quote-icon {
    position: absolute;
    top: -20px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--secondary-color);
    color: #000;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
}

.testimonial-card p {
    font-style: italic;
    color: #eee;
    margin-bottom: 1.5rem;
}

.testimonial-card .author {
    font-weight: 800;
    color: var(--secondary-color);
}

.testimonial-card .location {
    font-size: 0.8rem;
    color: #999;
}

/* FAQ Section */
.faq-section {
    padding: 4rem 0;
    background: transparent;
}

.accordion {
    max-width: 800px;
    margin: 0 auto;
}

.accordion-item {
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(5px);
    margin-bottom: 10px;
    border-radius: 1rem;
    border: 1px solid rgba(255, 255, 255, 0.2);
    overflow: hidden;
}

.accordion-header {
    width: 100%;
    padding: 1.5rem;
    text-align: left;
    background: none;
    border: none;
    outline: none;
    cursor: pointer;
    font-size: 1.1rem;
    font-weight: 600;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: color 0.3s;
}

.accordion-header:hover {
    color: var(--primary-color);
}

.accordion-header::after {
    content: '+';
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--secondary-color);
}

.accordion-header.active::after {
    content: '-';
}

.accordion-content {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease-out;
    background: #f9f9f9;
}

.accordion-content p {
    padding: 1.5rem;
    color: #666;
}

@media (max-width: 768px) {
    .infra-form {
        flex-direction: column;
    }
}