/* ============================================
   NERGIS TESISAT - MODERN RESPONSIVE DESIGN
   ============================================ */

/* CSS Variables */
:root {
    --primary-color: #1f3c88;
    --secondary-color: #2ecc71;
    --accent-color: #e74c3c;
    --text-dark: #2c3e50;
    --text-light: #7f8c8d;
    --bg-light: #f8f9fa;
    --white: #ffffff;
    --shadow: 0 5px 25px rgba(0,0,0,0.1);
    --shadow-hover: 0 10px 40px rgba(0,0,0,0.15);
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
    scroll-behavior: smooth;
}

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

/* ============================================
   MODERN NAVBAR
   ============================================ */
header {
    background: var(--white);
    box-shadow: 0 2px 20px rgba(0,0,0,0.1);
    position: sticky;
    top: 0;
    z-index: 1000;
    transition: var(--transition);
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 5%;
    max-width: 1400px;
    margin: 0 auto;
}

.logo {
    font-size: 1.8rem;
    font-weight: bold;
    color: var(--primary-color);
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 10px;
}

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

.nav-links {
    display: flex;
    list-style: none;
    gap: 2rem;
    align-items: center;
}

.nav-links a {
    color: var(--text-dark);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
    position: relative;
    padding: 5px 0;
}

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

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

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

.nav-links a.active {
    color: var(--primary-color);
    font-weight: 600;
}

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

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

.hamburger.active span:nth-child(1) {
    transform: rotate(45deg) translate(8px, 8px);
}

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

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

/* ============================================
   HERO SECTION
   ============================================ */
.hero {
    background: linear-gradient(135deg, var(--primary-color) 0%, #2c5aa0 100%);
    color: var(--white);
    padding: 100px 5%;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -10%;
    width: 500px;
    height: 500px;
    background: rgba(255,255,255,0.05);
    border-radius: 50%;
}

.hero::after {
    content: '';
    position: absolute;
    bottom: -30%;
    left: -5%;
    width: 400px;
    height: 400px;
    background: rgba(255,255,255,0.03);
    border-radius: 50%;
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 800px;
    margin: 0 auto;
}

.hero h1 {
    font-size: 3rem;
    margin-bottom: 1rem;
    animation: fadeInUp 0.8s ease;
}

.hero p {
    font-size: 1.3rem;
    margin-bottom: 2rem;
    opacity: 0.95;
    animation: fadeInUp 0.8s ease 0.2s backwards;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
    animation: fadeInUp 0.8s ease 0.4s backwards;
}

/* ============================================
   BUTTONS
   ============================================ */
.btn {
    display: inline-block;
    padding: 15px 35px;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition);
    border: none;
    cursor: pointer;
    font-size: 1rem;
}

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

.btn-primary:hover {
    background: #27ae60;
    transform: translateY(-3px);
    box-shadow: 0 10px 25px rgba(46,204,113,0.3);
}

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

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

/* ============================================
   SECTIONS
   ============================================ */
section {
    padding: 80px 5%;
    max-width: 1400px;
    margin: 0 auto;
}

.section-title {
    text-align: center;
    margin-bottom: 3rem;
}

.section-title h2 {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.section-title p {
    color: var(--text-light);
    font-size: 1.1rem;
}

/* ============================================
   CARDS
   ============================================ */
.cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.card {
    background: var(--white);
    border-radius: 15px;
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
    cursor: pointer;
}

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

.card img {
    width: 100%;
    height: 220px;
    object-fit: cover;
}

.card-content {
    padding: 1.5rem;
}

.card-content h3 {
    color: var(--primary-color);
    margin-bottom: 0.8rem;
    font-size: 1.4rem;
}

.card-content p {
    color: var(--text-light);
    margin-bottom: 1rem;
    line-height: 1.6;
}

.card-icon {
    font-size: 3rem;
    color: var(--secondary-color);
    margin-bottom: 1rem;
}

/* ============================================
   FEATURES / SERVICES
   ============================================ */
.features {
    background: var(--white);
}

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

.feature-item {
    text-align: center;
    padding: 2rem;
    border-radius: 10px;
    transition: var(--transition);
}

.feature-item:hover {
    background: var(--bg-light);
    transform: translateY(-5px);
}

.feature-icon {
    font-size: 3.5rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.feature-item h3 {
    color: var(--primary-color);
    margin-bottom: 0.8rem;
}

.feature-item p {
    color: var(--text-light);
}

/* ============================================
   FOOTER
   ============================================ */
footer {
    background: var(--primary-color);
    color: var(--white);
    padding: 3rem 5% 1rem;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    max-width: 1400px;
    margin: 0 auto 2rem;
}

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

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

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

.footer-section a {
    color: var(--white);
    text-decoration: none;
    opacity: 0.9;
    transition: var(--transition);
}

.footer-section a:hover {
    opacity: 1;
    color: var(--secondary-color);
}

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

/* ============================================
   FLOATING BUTTONS
   ============================================ */
.floating-buttons {
    position: fixed;
    bottom: 30px;
    right: 30px;
    display: flex;
    flex-direction: column;
    gap: 15px;
    z-index: 999;
}

.float-btn {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: var(--secondary-color);
    color: var(--white);
    display: flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    font-size: 1.5rem;
    box-shadow: 0 5px 20px rgba(0,0,0,0.2);
    transition: var(--transition);
}

.float-btn:hover {
    transform: scale(1.1);
    box-shadow: 0 8px 30px rgba(0,0,0,0.3);
}

.float-btn.whatsapp {
    background: #25D366;
}

.float-btn.phone {
    background: var(--accent-color);
}

/* ============================================
   CONTACT FORM
   ============================================ */
.contact-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    background: var(--white);
    padding: 3rem;
    border-radius: 15px;
    box-shadow: var(--shadow);
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.form-group {
    display: flex;
    flex-direction: column;
}

.form-group label {
    margin-bottom: 0.5rem;
    color: var(--primary-color);
    font-weight: 600;
}

.form-group input,
.form-group textarea {
    padding: 15px;
    border: 2px solid #e0e0e0;
    border-radius: 8px;
    font-size: 1rem;
    transition: var(--transition);
    font-family: inherit;
}

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

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.info-item {
    display: flex;
    align-items: start;
    gap: 1rem;
}

.info-icon {
    font-size: 2rem;
    color: var(--primary-color);
}

.info-content h3 {
    color: var(--primary-color);
    margin-bottom: 0.3rem;
}

/* ============================================
   ANIMATIONS
   ============================================ */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ============================================
   RESPONSIVE DESIGN
   ============================================ */
@media (max-width: 768px) {
    .nav-links {
        position: fixed;
        top: 70px;
        right: -100%;
        flex-direction: column;
        background: var(--white);
        width: 100%;
        padding: 2rem;
        box-shadow: var(--shadow);
        transition: var(--transition);
        gap: 1rem;
    }

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

    .hamburger {
        display: flex;
    }

    .hero h1 {
        font-size: 2rem;
    }

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

    .hero-buttons {
        flex-direction: column;
    }

    .section-title h2 {
        font-size: 2rem;
    }

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

    .contact-container {
        grid-template-columns: 1fr;
        padding: 2rem;
    }

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

    .floating-buttons {
        bottom: 20px;
        right: 20px;
    }

    .float-btn {
        width: 50px;
        height: 50px;
        font-size: 1.2rem;
    }
}

@media (max-width: 480px) {
    nav {
        padding: 1rem 3%;
    }

    section {
        padding: 50px 3%;
    }

    .hero {
        padding: 60px 3%;
    }

    .btn {
        padding: 12px 25px;
        font-size: 0.9rem;
    }
}

/* ============================================
   DISTRICT CARDS HOVER EFFECTS
   ============================================ */
.feature-item[style*="backdrop-filter"]:hover {
    background: rgba(255,255,255,0.25) !important;
    transform: translateY(-8px) scale(1.03);
    box-shadow: 0 15px 40px rgba(0,0,0,0.4);
    border: 1px solid rgba(255,255,255,0.4) !important;
}

.feature-item[style*="backdrop-filter"] {
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    cursor: pointer;
}

/* ============================================
   LIGHTBOX GALLERY
   ============================================ */
.gallery-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 1.5rem;
    margin-top: 2rem;
}

.gallery-item {
    position: relative;
    overflow: hidden;
    border-radius: 12px;
    cursor: pointer;
    aspect-ratio: 4 / 3;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.gallery-item:hover {
    transform: translateY(-8px) scale(1.02);
    box-shadow: var(--shadow-hover);
}

.gallery-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

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

.gallery-item::after {
    content: '🔍';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%) scale(0);
    font-size: 3rem;
    color: var(--white);
    background: rgba(31, 60, 136, 0.8);
    width: 80px;
    height: 80px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

.gallery-item:hover::after {
    transform: translate(-50%, -50%) scale(1);
}

/* Video Play Icon */
.gallery-item-video .video-play-icon {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 4rem;
    color: var(--white);
    background: rgba(31, 60, 136, 0.8);
    width: 90px;
    height: 90px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    padding-left: 8px;
    transition: var(--transition);
    z-index: 2;
}

.gallery-item-video:hover .video-play-icon {
    background: var(--primary-color);
    transform: translate(-50%, -50%) scale(1.1);
}

/* Lightbox Modal */
.lightbox {
    display: none;
    position: fixed;
    z-index: 9999;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.95);
    align-items: center;
    justify-content: center;
    animation: fadeIn 0.3s ease;
}

.lightbox-content {
    position: relative;
    max-width: 90%;
    max-height: 90%;
    display: flex;
    flex-direction: column;
    align-items: center;
    animation: zoomIn 0.3s ease;
}

.lightbox-content img {
    max-width: 100%;
    max-height: 85vh;
    object-fit: contain;
    border-radius: 8px;
    box-shadow: 0 10px 50px rgba(0,0,0,0.5);
}

.lightbox-close {
    position: absolute;
    top: 20px;
    right: 30px;
    font-size: 50px;
    color: var(--white);
    cursor: pointer;
    z-index: 10000;
    transition: var(--transition);
    font-weight: 300;
    line-height: 1;
}

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

.lightbox-prev,
.lightbox-next {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    font-size: 40px;
    color: var(--white);
    background: rgba(31, 60, 136, 0.7);
    border: none;
    cursor: pointer;
    padding: 20px 25px;
    border-radius: 8px;
    transition: var(--transition);
    z-index: 10000;
    font-weight: bold;
}

.lightbox-prev:hover,
.lightbox-next:hover {
    background: var(--primary-color);
    transform: translateY(-50%) scale(1.1);
}

.lightbox-prev {
    left: 30px;
}

.lightbox-next {
    right: 30px;
}

.lightbox-counter {
    color: var(--white);
    font-size: 1.2rem;
    margin-top: 15px;
    padding: 10px 20px;
    background: rgba(31, 60, 136, 0.8);
    border-radius: 25px;
    font-weight: 500;
}

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

@keyframes zoomIn {
    from {
        transform: scale(0.8);
        opacity: 0;
    }
    to {
        transform: scale(1);
        opacity: 1;
    }
}

/* Responsive Lightbox */
@media (max-width: 768px) {
    .gallery-grid {
        grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
        gap: 1rem;
    }

    .lightbox-prev,
    .lightbox-next {
        font-size: 30px;
        padding: 15px 20px;
    }

    .lightbox-prev {
        left: 10px;
    }

    .lightbox-next {
        right: 10px;
    }

    .lightbox-close {
        top: 10px;
        right: 10px;
        font-size: 40px;
    }

    .lightbox-counter {
        font-size: 1rem;
        padding: 8px 16px;
    }

    .gallery-item::after {
        font-size: 2rem;
        width: 60px;
        height: 60px;
    }
}

@media (max-width: 480px) {
    .gallery-grid {
        grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
        gap: 0.8rem;
    }

    .lightbox-prev,
    .lightbox-next {
        font-size: 24px;
        padding: 12px 16px;
    }

    .lightbox-close {
        font-size: 35px;
    }

    .lightbox-content {
        max-width: 95%;
        max-height: 85%;
    }
}

/* Touch swipe support for mobile */
@media (hover: none) and (pointer: coarse) {
    .gallery-item::after {
        display: none;
    }
}