/* ==========================================
   CSS VARIABLES & GLOBAL STYLES
   ========================================== */
:root {
    --primary: #00b4d8;
    --primary-hover: #0096c7;
    --secondary: #03045e;
    --accent: #ffb703;
    --accent-hover: #fb8500;
    --bg-light: #f0f7f7;
    --bg-white: #ffffff;
    --text-dark: #1d2d44;
    --text-muted: #64748b;
    --glass-bg: rgba(255, 255, 255, 0.65);
    --glass-border: rgba(255, 255, 255, 0.4);
    --glass-shadow: 0 8px 32px 0 rgba(0, 180, 216, 0.08);
    --border-radius: 20px;
    --transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

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

h1, h2, h3, h4, h5, h6 {
    font-family: 'Outfit', sans-serif;
    font-weight: 800;
    color: var(--secondary);
}

.container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 15px;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 10px;
}
::-webkit-scrollbar-track {
    background: var(--bg-light);
}
::-webkit-scrollbar-thumb {
    background: var(--primary);
    border-radius: 10px;
}
::-webkit-scrollbar-thumb:hover {
    background: var(--primary-hover);
}

/* ==========================================
   BUTTONS & ICONS
   ========================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 14px 28px;
    border-radius: 50px;
    font-family: 'Outfit', sans-serif;
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    transition: var(--transition);
    border: none;
    text-decoration: none;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary), var(--primary-hover));
    color: white;
    box-shadow: 0 8px 20px rgba(0, 180, 216, 0.3);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 24px rgba(0, 180, 216, 0.45);
}

.btn-secondary {
    background-color: #25d366; /* WhatsApp Green */
    color: white;
    box-shadow: 0 8px 20px rgba(37, 211, 102, 0.3);
}

.btn-secondary:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 24px rgba(37, 211, 102, 0.45);
    background-color: #20ba5a;
}

.btn-block {
    width: 100%;
}

.btn-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 45px;
    height: 45px;
    border-radius: 50%;
    color: white;
    font-size: 1.2rem;
    transition: var(--transition);
    text-decoration: none;
}

/* ==========================================
   HEADER & NAVIGATION
   ========================================== */
#main-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    padding: 15px 0;
    background: var(--glass-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--glass-border);
    box-shadow: var(--glass-shadow);
    transition: var(--transition);
}

#main-header.scrolled {
    padding: 10px 0;
    background: rgba(240, 247, 247, 0.9);
}

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

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
}

.logo-img {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    border: 2px solid var(--primary);
    object-fit: cover;
}

.logo-text {
    font-size: 1.6rem;
    font-family: 'Outfit', sans-serif;
    font-weight: 800;
    color: var(--secondary);
    letter-spacing: 0.5px;
}

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

.nav-menu {
    display: flex;
    align-items: center;
    gap: 30px;
}

.nav-menu a {
    text-decoration: none;
    color: var(--text-dark);
    font-weight: 700;
    font-size: 0.95rem;
    transition: var(--transition);
    position: relative;
}

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

.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 3px;
    background: var(--primary);
    border-radius: 2px;
    transition: var(--transition);
}

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

.nav-cta-btn {
    background: var(--secondary);
    color: white !important;
    padding: 8px 20px;
    border-radius: 50px;
    box-shadow: 0 4px 10px rgba(3, 4, 94, 0.2);
}

.nav-cta-btn:hover {
    background: var(--primary);
    transform: translateY(-2px);
}

.nav-cta-btn::after {
    display: none !important;
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 12px;
}

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

.whatsapp-btn {
    background-color: #25d366;
}

.header-actions .btn-icon:hover {
    transform: scale(1.1);
}

.mobile-menu-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--secondary);
    cursor: pointer;
}

/* ==========================================
   HERO SECTION
   ========================================== */
#hero {
    position: relative;
    padding: 160px 0 200px 0;
    background: linear-gradient(180deg, #e0f2fe 0%, var(--bg-light) 100%);
    overflow: hidden;
}

.hero-grid {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 50px;
    align-items: center;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(0, 180, 216, 0.1);
    color: var(--primary-hover);
    padding: 6px 16px;
    border-radius: 50px;
    font-size: 0.9rem;
    font-weight: 700;
    margin-bottom: 20px;
    border: 1px solid rgba(0, 180, 216, 0.2);
}

#hero h1 {
    font-size: 3.5rem;
    line-height: 1.15;
    margin-bottom: 20px;
}

#hero h1 .highlight {
    color: var(--primary);
    position: relative;
    display: inline-block;
}

#hero h1 .highlight::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: 5px;
    width: 100%;
    height: 12px;
    background: rgba(0, 180, 216, 0.15);
    z-index: -1;
    border-radius: 4px;
}

#hero p {
    font-size: 1.1rem;
    color: var(--text-muted);
    margin-bottom: 35px;
    max-width: 580px;
}

.hero-buttons {
    display: flex;
    gap: 15px;
    margin-bottom: 45px;
    flex-wrap: wrap;
}

.hero-stats {
    display: flex;
    gap: 40px;
    border-top: 1px solid rgba(0, 180, 216, 0.15);
    padding-top: 30px;
}

.stat-item h3 {
    font-size: 1.8rem;
    color: var(--secondary);
    margin-bottom: 5px;
}

.stat-item p {
    font-size: 0.9rem;
    color: var(--text-muted);
    margin: 0 !important;
}

.hero-image-wrapper {
    position: relative;
    display: flex;
    justify-content: center;
}

.anime-art-card {
    position: relative;
    width: 100%;
    max-width: 420px;
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: 0 20px 40px rgba(0, 102, 255, 0.12);
    border: 4px solid white;
    transform: rotate(2deg);
    transition: var(--transition);
}

.anime-art-card:hover {
    transform: rotate(0deg) scale(1.03);
    box-shadow: 0 30px 60px rgba(0, 102, 255, 0.2);
}

.hero-art {
    width: 100%;
    display: block;
    object-fit: cover;
    aspect-ratio: 4/5;
}

.glowing-effect {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle, rgba(255,255,255,0.15) 0%, rgba(0,180,216,0.1) 100%);
    pointer-events: none;
}

/* Background Animated Bubbles */
.bubble-container {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 1;
}

.bubble {
    position: absolute;
    bottom: -20px;
    background: radial-gradient(circle at 30% 30%, rgba(255, 255, 255, 0.9) 0%, rgba(0, 180, 216, 0.4) 50%, rgba(0, 77, 182, 0.2) 100%);
    border-radius: 50% 50% 50% 50% / 60% 60% 40% 40%;
    box-shadow: 0 4px 10px rgba(0, 180, 216, 0.2), inset -2px -2px 6px rgba(0, 0, 0, 0.1);
    animation: floatUp 8s infinite linear;
}

@keyframes floatUp {
    0% {
        transform: translateY(0) scale(0.8) rotate(0deg);
        opacity: 0;
    }
    10% {
        opacity: 0.6;
    }
    90% {
        opacity: 0.6;
    }
    100% {
        transform: translateY(-100vh) scale(1.2) rotate(360deg);
        opacity: 0;
    }
}

/* Animated Multi-layer Waves */
.waves {
    position: relative;
    width: 100%;
    height: 12vh;
    min-height: 80px;
    max-height: 120px;
    margin-bottom: -7px;
}

.parallax > use {
    animation: move-forever 25s cubic-bezier(.55,.5,.45,.5) infinite;
}
.parallax > use:nth-child(1) {
    animation-delay: -2s;
    animation-duration: 7s;
}
.parallax > use:nth-child(2) {
    animation-delay: -3s;
    animation-duration: 10s;
}
.parallax > use:nth-child(3) {
    animation-delay: -4s;
    animation-duration: 13s;
}
.parallax > use:nth-child(4) {
    animation-delay: -5s;
    animation-duration: 20s;
}

@keyframes move-forever {
    0% {
        transform: translate3d(-90px,0,0);
    }
    100% { 
        transform: translate3d(85px,0,0);
    }
}

/* Wave Divider */
.wave-divider {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    overflow: hidden;
    line-height: 0;
    transform: rotate(180deg);
    z-index: 5;
}

/* ==========================================
   FEATURES (NİTELİKLER) SECTION
   ========================================== */
#nitelikler {
    padding: 100px 0;
    background-color: var(--bg-white);
    position: relative;
}

.section-title {
    max-width: 700px;
    margin: 0 auto 60px auto;
}

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

.sub-title {
    display: inline-block;
    color: var(--primary);
    font-weight: 800;
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 2px;
    margin-bottom: 10px;
}

.section-title h2 {
    font-size: 2.5rem;
    margin-bottom: 15px;
}

.section-desc {
    color: var(--text-muted);
    font-size: 1.1rem;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 30px;
}

.feature-card {
    background: var(--bg-light);
    padding: 40px 30px;
    border-radius: var(--border-radius);
    border: 1px solid rgba(0, 180, 216, 0.05);
    box-shadow: 0 10px 30px rgba(0, 102, 255, 0.02);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.feature-card:hover {
    transform: translateY(-8px);
    background: white;
    border-color: rgba(0, 180, 216, 0.2);
    box-shadow: 0 20px 40px rgba(0, 180, 216, 0.08);
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 6px;
    height: 100%;
    background: var(--primary);
    transform: scaleY(0);
    transform-origin: bottom;
    transition: var(--transition);
}

.feature-card:hover::before {
    transform: scaleY(1);
}

.feature-icon {
    width: 60px;
    height: 60px;
    border-radius: 15px;
    background: rgba(0, 180, 216, 0.1);
    color: var(--primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.8rem;
    margin-bottom: 25px;
    transition: var(--transition);
}

.feature-card:hover .feature-icon {
    background: var(--primary);
    color: white;
    transform: scale(1.1);
}

.feature-card h3 {
    font-size: 1.3rem;
    margin-bottom: 15px;
}

.feature-card p {
    color: var(--text-muted);
    font-size: 0.95rem;
}

/* ==========================================
   SERVICES (HİZMETLER) SECTION
   ========================================== */
#hizmetler {
    padding: 140px 0 100px 0;
    background-color: var(--bg-light);
    position: relative;
}

.wave-divider-top {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    overflow: hidden;
    line-height: 0;
    z-index: 5;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(270px, 1fr));
    gap: 30px;
}

.service-card {
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
    border-radius: var(--border-radius);
    box-shadow: var(--glass-shadow);
    overflow: hidden;
    transition: var(--transition);
}

.service-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 40px rgba(0, 180, 216, 0.12);
    border-color: rgba(0, 180, 216, 0.3);
}

.service-img-placeholder {
    height: 180px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 4rem;
    color: white;
    position: relative;
    overflow: hidden;
}

/* Anime watercolor gradient backgrounds for services */
.anime-pool {
    background: linear-gradient(135deg, #00b4d8 0%, #0077b6 100%);
}
.anime-factory {
    background: linear-gradient(135deg, #48cae4 0%, #03045e 100%);
}
.anime-garden {
    background: linear-gradient(135deg, #52b788 0%, #0077b6 100%);
}
.anime-construction {
    background: linear-gradient(135deg, #ffb703 0%, #0096c7 100%);
}

.service-img-placeholder::after {
    content: '';
    position: absolute;
    bottom: -20px;
    left: -10%;
    width: 120%;
    height: 40px;
    background: var(--bg-light);
    border-radius: 50% 50% 0 0;
    transition: var(--transition);
}

.service-card:hover .service-img-placeholder i {
    transform: scale(1.15) rotate(-5deg);
}

.service-img-placeholder i {
    transition: var(--transition);
    filter: drop-shadow(0 4px 10px rgba(0,0,0,0.15));
}

.service-info {
    padding: 30px;
}

.service-info h3 {
    font-size: 1.25rem;
    margin-bottom: 12px;
}

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

/* ==========================================
   LOCATIONS (BÖLGELER) SECTION
   ========================================== */
#bolgeler {
    padding: 100px 0;
    background-color: var(--bg-white);
}

.regions-list {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 15px;
    margin-bottom: 40px;
}

.region-chip {
    background: var(--bg-light);
    border: 1px solid rgba(0, 180, 216, 0.1);
    color: var(--secondary);
    padding: 12px 24px;
    border-radius: 50px;
    font-weight: 700;
    font-size: 1rem;
    display: flex;
    align-items: center;
    gap: 10px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.02);
    transition: var(--transition);
    cursor: default;
}

.region-chip:hover {
    background: linear-gradient(135deg, var(--primary), var(--primary-hover));
    color: white;
    transform: scale(1.05) translateY(-2px);
    box-shadow: 0 8px 20px rgba(0, 180, 216, 0.25);
    border-color: transparent;
}

.region-chip i {
    color: var(--primary);
    transition: var(--transition);
}

.region-chip:hover i {
    color: white;
    transform: translateY(-2px);
}

.region-alert {
    max-width: 550px;
    margin: 0 auto;
    background: rgba(0, 180, 216, 0.06);
    border: 1.5px solid rgba(0, 180, 216, 0.2);
    padding: 18px 24px;
    border-radius: var(--border-radius);
    text-align: center;
    box-shadow: 0 4px 15px rgba(0, 180, 216, 0.03);
}

.region-alert p {
    color: var(--primary-hover);
    font-weight: 700;
    font-size: 0.98rem;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    margin: 0;
}

.region-alert p i {
    font-size: 1.1rem;
    color: var(--primary);
}

/* ==========================================
   CONTACT (İLETİŞİM) & FORM SECTION
   ========================================== */
#iletisim {
    padding: 100px 0;
    background: linear-gradient(180deg, var(--bg-white) 0%, #e0f2fe 100%);
}

.form-container {
    position: relative;
    z-index: 2;
}

.contact-grid {
    display: grid;
    grid-template-columns: 0.9fr 1.1fr;
    gap: 50px;
    align-items: center;
}

.contact-details h2 {
    font-size: 2.5rem;
    margin-bottom: 20px;
    line-height: 1.2;
}

.contact-details p {
    color: var(--text-muted);
    font-size: 1.1rem;
    margin-bottom: 40px;
}

.contact-methods {
    display: flex;
    flex-direction: column;
    gap: 25px;
}

.method-item {
    display: flex;
    align-items: center;
    gap: 20px;
}

.method-icon {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: rgba(0, 180, 216, 0.1);
    color: var(--primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.3rem;
}

.method-item h4 {
    font-size: 0.9rem;
    color: var(--text-muted);
    font-weight: 600;
}

.method-item a, .method-item p {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--secondary);
    text-decoration: none;
    margin: 0 !important;
}

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

.contact-form-wrapper {
    background: var(--glass-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--glass-border);
    padding: 40px;
    border-radius: var(--border-radius);
    box-shadow: 0 15px 40px rgba(0, 102, 255, 0.08);
}

.contact-form-wrapper h3 {
    font-size: 1.6rem;
    margin-bottom: 25px;
    border-bottom: 2px solid rgba(0, 180, 216, 0.15);
    padding-bottom: 15px;
}

.form-group {
    margin-bottom: 20px;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.form-group label {
    display: block;
    font-weight: 700;
    margin-bottom: 8px;
    font-size: 0.9rem;
    color: var(--secondary);
}

.form-group input, .form-group select, .form-group textarea {
    width: 100%;
    padding: 14px 18px;
    border: 1.5px solid rgba(0, 180, 216, 0.15);
    border-radius: 12px;
    font-family: inherit;
    font-size: 0.95rem;
    background: rgba(255,255,255,0.8);
    transition: var(--transition);
    color: var(--text-dark);
}

.form-group input:focus, .form-group select:focus, .form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
    background: white;
    box-shadow: 0 0 0 4px rgba(0, 180, 216, 0.1);
}

/* ==========================================
   FOOTER
   ========================================== */
footer {
    background-color: var(--secondary);
    color: rgba(255,255,255,0.7);
    padding: 40px 0;
    text-align: center;
    border-top: 1px solid rgba(255,255,255,0.05);
}

.footer-bottom p {
    font-size: 0.95rem;
    margin-bottom: 8px;
}

.footer-bottom p:last-child {
    font-size: 0.85rem;
    color: rgba(255,255,255,0.4);
    margin-bottom: 0;
}

/* ==========================================
   FLOATING WHATSAPP
   ========================================== */
.floating-whatsapp {
    position: fixed;
    top: 50%;
    right: 40px;
    transform: translateY(-50%);
    background-color: #25d366;
    color: white;
    width: 60px;
    height: 60px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 8px 25px rgba(37, 211, 102, 0.3);
    z-index: 999;
    transition: var(--transition);
}

.floating-whatsapp:hover {
    transform: translateY(-50%) scale(1.08);
    box-shadow: 0 15px 30px rgba(37, 211, 102, 0.5);
    background-color: #20ba5a;
}

.floating-whatsapp span {
    display: none;
}

.floating-whatsapp i {
    font-size: 1.8rem;
    margin: 0;
}

/* ==========================================
   MODAL DIALOG
   ========================================== */
.modal {
    display: none;
    position: fixed;
    z-index: 2000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(3, 4, 94, 0.5);
    backdrop-filter: blur(5px);
    align-items: center;
    justify-content: center;
}

.modal-content {
    background: white;
    padding: 50px 40px;
    border-radius: var(--border-radius);
    max-width: 480px;
    width: 90%;
    position: relative;
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.25);
    animation: zoomIn 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

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

.close-modal {
    position: absolute;
    top: 20px;
    right: 25px;
    font-size: 2rem;
    cursor: pointer;
    color: var(--text-muted);
    transition: var(--transition);
}

.close-modal:hover {
    color: var(--secondary);
}

.success-icon {
    font-size: 4.5rem;
    color: #25d366;
    margin-bottom: 20px;
}

.modal-content h2 {
    margin-bottom: 15px;
}

.modal-content p {
    color: var(--text-muted);
    margin-bottom: 30px;
}

/* ==========================================
   RESPONSIVE DESIGN (MOBİL UYUMLULUK)
   ========================================== */
@media (max-width: 991px) {
    #hero {
        padding: 120px 0 160px 0;
    }
    #hero h1 {
        font-size: 2.8rem;
    }
    
    .hero-grid {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 40px;
    }
    
    .hero-content {
        display: flex;
        flex-direction: column;
        align-items: center;
    }
    
    .hero-buttons {
        justify-content: center;
    }
    
    .hero-stats {
        width: 100%;
        justify-content: space-around;
    }
    
    .contact-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }
}

@media (max-width: 768px) {
    .nav-menu {
        display: none; /* JS will toggle menu */
    }
    
    .mobile-menu-toggle {
        display: block;
    }
    
    #hero h1 {
        font-size: 2.3rem;
    }
    
    .form-row {
        grid-template-columns: 1fr;
        gap: 0;
    }
    
    .floating-whatsapp {
        top: auto;
        bottom: 30px;
        right: 30px;
        transform: none;
    }
    
    .floating-whatsapp:hover {
        transform: scale(1.05);
    }
    

}

/* ==========================================
   PREMIUM INTERACTIVE & WATER EFFECTS
   ========================================== */

/* Click Water Ripple Effect */
.click-ripple {
    position: absolute;
    border: 2px solid rgba(0, 180, 216, 0.4);
    background: radial-gradient(circle, rgba(0, 180, 216, 0.15) 0%, rgba(255,255,255,0) 70%);
    border-radius: 50%;
    pointer-events: none;
    transform: translate(-50%, -50%) scale(0);
    animation: ripple-effect 0.8s cubic-bezier(0.1, 0.8, 0.3, 1) forwards;
    z-index: 9999;
}
@keyframes ripple-effect {
    to {
        transform: translate(-50%, -50%) scale(6);
        opacity: 0;
    }
}

/* Glowing Pulse Effect for Hero Art */
.anime-art-card {
    animation: water-glow 6s ease-in-out infinite alternate;
}
@keyframes water-glow {
    0% {
        box-shadow: 0 20px 40px rgba(0, 180, 216, 0.15), 0 0 20px rgba(0, 180, 216, 0.1);
        border-color: rgba(255,255,255,0.9);
    }
    100% {
        box-shadow: 0 25px 50px rgba(0, 180, 216, 0.3), 0 0 35px rgba(0, 180, 216, 0.4);
        border-color: rgba(0, 180, 216, 0.2);
    }
}

/* Side Waterfall Streams */
.waterfall-stream-left, .waterfall-stream-right {
    position: fixed;
    top: 0;
    width: 40px;
    height: 100%;
    pointer-events: none;
    z-index: 999;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: space-around;
    opacity: 0.6;
}
.waterfall-stream-left { left: 15px; }
.waterfall-stream-right { right: 15px; }

.waterfall-drop {
    width: 4px;
    height: 20px;
    background: linear-gradient(to bottom, rgba(255, 255, 255, 0), rgba(0, 180, 216, 0.7));
    border-radius: 50%;
    animation: fallDown 4s infinite linear;
    opacity: 0;
}

@keyframes fallDown {
    0% {
        transform: translateY(-50px);
        opacity: 0;
    }
    10% {
        opacity: 0.7;
    }
    90% {
        opacity: 0.7;
    }
    100% {
        transform: translateY(105vh);
        opacity: 0;
    }
}

@media (max-width: 1200px) {
    .waterfall-stream-left, .waterfall-stream-right {
        display: none;
    }
}

/* ==========================================
   CUSTOM WATER BUBBLE CURSOR
   ========================================== */
.custom-cursor {
    width: 25px;
    height: 25px;
    border: 2px solid rgba(0, 180, 216, 0.6);
    background-color: rgba(0, 180, 216, 0.08);
    border-radius: 50% 50% 50% 50% / 60% 60% 40% 40%; /* drop shape */
    position: fixed;
    transform: translate(-50%, -50%);
    pointer-events: none;
    z-index: 10000;
    transition: width 0.2s, height 0.2s, background-color 0.2s;
    box-shadow: 0 0 10px rgba(0, 180, 216, 0.2);
    opacity: 0;
}

.custom-cursor-dot {
    width: 6px;
    height: 6px;
    background-color: var(--primary);
    border-radius: 50%;
    position: fixed;
    transform: translate(-50%, -50%);
    pointer-events: none;
    z-index: 10001;
    opacity: 0;
}

/* Hide default cursor on desktop screens */
@media (min-width: 992px) {
    body, a, button, input, select, textarea {
        cursor: none !important;
    }
    .custom-cursor, .custom-cursor-dot {
        opacity: 1;
    }
}

.custom-cursor.hover {
    width: 35px;
    height: 35px;
    background-color: rgba(0, 180, 216, 0.2);
    border-color: var(--primary);
}

/* ==========================================
   TONNAGE CALCULATOR (SU HESAPLAMA)
   ========================================== */
#hesaplama {
    padding: 100px 0;
    background-color: var(--bg-light);
}

.calculator-wrapper {
    background: var(--glass-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--glass-border);
    border-radius: var(--border-radius);
    box-shadow: var(--glass-shadow);
    padding: 40px;
    max-width: 900px;
    margin: 0 auto;
}

.calc-tabs {
    display: flex;
    justify-content: center;
    gap: 15px;
    margin-bottom: 40px;
    border-bottom: 2px solid rgba(0, 180, 216, 0.15);
    padding-bottom: 20px;
    flex-wrap: wrap;
}

.calc-tab-btn {
    background: none;
    border: none;
    padding: 10px 25px;
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text-muted);
    cursor: none; /* custom cursor */
    transition: var(--transition);
    border-radius: 50px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.calc-tab-btn.active {
    background: var(--secondary);
    color: white;
    box-shadow: 0 5px 15px rgba(3, 4, 94, 0.2);
}

.calc-tab-btn:hover:not(.active) {
    color: var(--primary);
    background: rgba(0, 180, 216, 0.08);
}

.calc-content {
    display: none;
}

.calc-content.active {
    display: block;
    animation: fadeIn 0.4s ease;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.calc-grid {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 40px;
    align-items: center;
}

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

.range-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 10px;
    font-weight: 700;
    color: var(--secondary);
}

.range-val {
    background: rgba(0, 180, 216, 0.1);
    color: var(--primary-hover);
    padding: 4px 12px;
    border-radius: 50px;
    font-size: 0.9rem;
}

.form-group-range input[type="range"] {
    -webkit-appearance: none;
    width: 100%;
    height: 8px;
    border-radius: 5px;
    background: rgba(0, 180, 216, 0.15);
    outline: none;
}

.form-group-range input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: var(--primary);
    box-shadow: 0 0 10px rgba(0, 180, 216, 0.5);
    transition: var(--transition);
}

.form-group-range input[type="range"]::-webkit-slider-thumb:hover {
    transform: scale(1.2);
    background: var(--primary-hover);
}

.calc-results {
    background: white;
    padding: 30px;
    border-radius: 15px;
    border: 1px solid rgba(0, 180, 216, 0.15);
    text-align: center;
    box-shadow: 0 10px 25px rgba(0, 102, 255, 0.03);
}

.result-box {
    margin-bottom: 25px;
}

.result-box span {
    font-size: 0.9rem;
    color: var(--text-muted);
    font-weight: 700;
    text-transform: uppercase;
}

.result-box h3 {
    font-size: 3rem;
    color: var(--primary-hover);
    margin: 5px 0;
    font-weight: 800;
}

.tanker-suggestion {
    background: rgba(0, 180, 216, 0.05);
    padding: 15px;
    border-radius: 10px;
    margin-bottom: 25px;
    border-left: 4px solid var(--primary);
    text-align: left;
}

.tanker-suggestion h4 {
    font-size: 0.95rem;
    margin-bottom: 5px;
}

.tanker-suggestion p {
    font-size: 0.9rem;
    color: var(--text-muted);
}

/* ==========================================
   FAQ SECTION (SSS ACCORDION)
   ========================================== */
#sss {
    padding: 100px 0;
    background-color: var(--bg-white);
}

.faq-accordion {
    max-width: 800px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.faq-item {
    background: var(--bg-light);
    border: 1px solid rgba(0, 180, 216, 0.08);
    border-radius: 15px;
    overflow: hidden;
    transition: var(--transition);
}

.faq-question {
    padding: 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    user-select: none;
    transition: var(--transition);
}

.faq-question h3 {
    font-size: 1.15rem;
    color: var(--secondary);
    font-weight: 700;
}

.faq-icon {
    width: 30px;
    height: 30px;
    border-radius: 50%;
    background: rgba(0, 180, 216, 0.1);
    color: var(--primary);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

.faq-item.active .faq-icon {
    transform: rotate(180deg);
    background: var(--primary);
    color: white;
}

.faq-item:hover {
    box-shadow: 0 8px 25px rgba(0, 180, 216, 0.06);
    border-color: rgba(0, 180, 216, 0.2);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease-out;
    background: white;
    border-top: 0 solid rgba(0, 180, 216, 0.1);
}

.faq-item.active .faq-answer {
    border-top-width: 1px;
    padding: 24px;
    max-height: 500px;
}

.faq-answer p {
    color: var(--text-muted);
    font-size: 0.98rem;
    line-height: 1.6;
}

/* ==========================================
   SCROLL REVEAL ANIMATIONS
   ========================================== */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s cubic-bezier(0.25, 1, 0.5, 1), transform 0.8s cubic-bezier(0.25, 1, 0.5, 1);
}

.reveal.revealed {
    opacity: 1;
    transform: translateY(0);
}

@media (max-width: 991px) {
    .calc-grid {
        grid-template-columns: 1fr;
        gap: 30px;
    }
}

/* ==========================================
   LIVE TECH DASHBOARD & IoT
   ========================================== */
#dashboard {
    padding: 100px 0;
    background-color: var(--bg-white);
}

.dashboard-grid {
    display: flex;
    justify-content: center;
    margin-bottom: 50px;
}

.dash-card {
    background: var(--glass-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--glass-border);
    border-radius: var(--border-radius);
    box-shadow: var(--glass-shadow);
    padding: 35px;
    display: flex;
    flex-direction: column;
    width: 100%;
    max-width: 580px;
}

.dash-card-header {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    margin-bottom: 25px;
    border-bottom: 1.5px solid rgba(0, 180, 216, 0.15);
    padding-bottom: 15px;
}

.dash-card-header h4 {
    font-size: 1.1rem;
    color: var(--secondary);
}

.pulse-indicator {
    width: 12px;
    height: 12px;
    border-radius: 50%;
}

.pulse-indicator.live {
    background-color: #25d366;
    animation: pulse-green 1.5s infinite;
}

.pulse-indicator.active {
    background-color: var(--accent);
    animation: pulse-yellow 1.5s infinite;
}

@keyframes pulse-green {
    0% { box-shadow: 0 0 0 0 rgba(37, 211, 102, 0.7); }
    70% { box-shadow: 0 0 0 8px rgba(37, 211, 102, 0); }
    100% { box-shadow: 0 0 0 0 rgba(37, 211, 102, 0); }
}

@keyframes pulse-yellow {
    0% { box-shadow: 0 0 0 0 rgba(255, 183, 3, 0.7); }
    70% { box-shadow: 0 0 0 8px rgba(255, 183, 3, 0); }
    100% { box-shadow: 0 0 0 0 rgba(255, 183, 3, 0); }
}

/* IoT Tank Visualizer */
.iot-visualizer {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 30px;
    align-items: center;
    margin-bottom: 25px;
}

.tank-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 15px;
}

.glass-tank {
    width: 110px;
    height: 170px;
    border: 3px solid rgba(0, 180, 216, 0.4);
    border-radius: 20px;
    background: rgba(0, 180, 216, 0.03);
    position: relative;
    overflow: hidden;
    box-shadow: inset 0 0 15px rgba(0, 180, 216, 0.1);
}

.water-level-fill {
    width: 100%;
    height: 75%;
    position: absolute;
    bottom: 0;
    left: 0;
    background: linear-gradient(180deg, rgba(0, 180, 216, 0.85) 0%, rgba(3, 4, 94, 0.85) 100%);
    transition: height 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Waves inside tank */
.water-waves {
    position: absolute;
    width: 200%;
    height: 20px;
    top: -10px;
    left: 0;
    background: radial-gradient(circle at 50% 100%, rgba(255,255,255,0.4) 0%, rgba(0, 180, 216, 0) 70%);
    animation: wave-move 4s linear infinite;
}

@keyframes wave-move {
    0% { transform: translateX(0); }
    100% { transform: translateX(-50%); }
}

.tank-percentage {
    font-size: 1.8rem;
    font-weight: 800;
    color: var(--secondary);
}

.sensor-readings {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.reading-item {
    display: flex;
    justify-content: space-between;
    padding: 8px 12px;
    background: rgba(255,255,255,0.8);
    border-radius: 8px;
    border: 1px solid rgba(0, 180, 216, 0.08);
}

.reading-item .label {
    font-size: 0.85rem;
    color: var(--text-muted);
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: 8px;
}

.reading-item .label i {
    color: var(--primary);
}

.reading-item .value {
    font-size: 0.9rem;
    font-weight: 800;
    color: var(--secondary);
}

.sensor-alert-box {
    padding: 15px;
    border-radius: 12px;
    background: rgba(37, 211, 102, 0.08);
    border: 1px solid rgba(37, 211, 102, 0.2);
    color: #1a7f37;
    font-weight: 700;
    font-size: 0.9rem;
    text-align: center;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    transition: var(--transition);
}

.sensor-alert-box.danger {
    background: rgba(255, 183, 3, 0.08);
    border-color: rgba(255, 183, 3, 0.3);
    color: #b57a00;
    animation: alert-flash 1s infinite alternate;
}

@keyframes alert-flash {
    from { transform: scale(1); }
    to { transform: scale(1.02); }
}

/* Fleet list and delivery log ticker styles removed */

/* Lab Quality Badge */
.lab-quality-badge {
    display: flex;
    align-items: center;
    gap: 30px;
    background: rgba(0, 180, 216, 0.04);
    border: 2px solid rgba(0, 180, 216, 0.12);
    border-radius: var(--border-radius);
    padding: 30px;
    margin-top: 40px;
    box-shadow: 0 10px 30px rgba(0, 180, 216, 0.02);
}

.lab-badge-icon {
    width: 70px;
    height: 70px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary), var(--primary-hover));
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.2rem;
    flex-shrink: 0;
    box-shadow: 0 8px 20px rgba(0, 180, 216, 0.2);
}

.lab-badge-info {
    flex-grow: 1;
}

.lab-badge-info h4 {
    font-size: 1.2rem;
    margin-bottom: 6px;
}

.lab-badge-info p {
    font-size: 0.95rem;
    color: var(--text-muted);
    margin: 0;
}

@media (max-width: 991px) {
    .dashboard-grid {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    .lab-quality-badge {
        flex-direction: column;
        text-align: center;
        gap: 20px;
    }
}