/**
 * Sudak İnşaat - Modern Lacivert Tema
 * Bootstrap 5 uyumlu - Tam lacivert arka plan
 */

 :root {
    --primary-color: #1a237e;
    --primary-dark: #0d1b4d;
    --primary-darker: #060d2e;
    --primary-light: #253396;
    --primary-lighter: #2d3db8;
    --accent-color: #ffffff;
    --accent-hover: rgba(255, 255, 255, 0.9);
    --text-on-dark: #ffffff;
    --text-muted-dark: rgba(255, 255, 255, 0.85);
    --text-muted-dark-soft: rgba(255, 255, 255, 0.7);
    --border-dark: rgba(255, 255, 255, 0.12);
    --card-bg: rgba(255, 255, 255, 0.06);
    --card-bg-hover: rgba(255, 255, 255, 0.1);
    --input-bg-dark: rgba(255, 255, 255, 0.08);
    --input-border-dark: rgba(255, 255, 255, 0.2);
    --shadow-dark: 0 8px 32px rgba(0, 0, 0, 0.3);
    --radius: 12px;
    --radius-lg: 16px;
    --ease-out-expo: cubic-bezier(0.16, 1, 0.3, 1);
    --ease-in-out-smooth: cubic-bezier(0.65, 0, 0.35, 1);
}

/* ========== KEYFRAMES ========== */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(28px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

@keyframes gradientShift {
    0%, 100% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
}

@keyframes gradientFlow {
    0% { background-position: 0% 0%; }
    100% { background-position: 200% 200%; }
}

@keyframes shimmer {
    0% { background-position: -200% 0; }
    100% { background-position: 200% 0; }
}

@keyframes pulseGlow {
    0%, 100% { box-shadow: 0 4px 14px rgba(255, 255, 255, 0.2); }
    50% { box-shadow: 0 4px 24px rgba(255, 255, 255, 0.35); }
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-6px); }
}

@keyframes scaleIn {
    from {
        opacity: 0;
        transform: scale(0.96);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

@keyframes slideInLeft {
    from {
        opacity: 0;
        transform: translateX(-24px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes borderGlow {
    0%, 100% { border-color: rgba(255, 255, 255, 0.12); box-shadow: 0 0 0 rgba(255, 255, 255, 0); }
    50% { border-color: rgba(255, 255, 255, 0.25); box-shadow: 0 0 20px rgba(255, 255, 255, 0.08); }
}

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

html {
    scroll-behavior: smooth;
}

.main-content {
    animation: fadeIn 0.6s var(--ease-out-expo) both;
}

body {
    font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
    color: var(--text-on-dark);
    line-height: 1.6;
    background: linear-gradient(-45deg, var(--primary-darker) 0%, var(--primary-dark) 25%, var(--primary-color) 50%, var(--primary-dark) 75%, var(--primary-darker) 100%);
    background-size: 400% 400%;
    animation: gradientShift 18s ease infinite;
    min-height: 100vh;
}

/* Header & Navigation - Modern sticky */
.navbar {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%) !important;
    padding: 0.75rem 0;
    box-shadow: 0 4px 24px rgba(0, 0, 0, 0.25);
    backdrop-filter: blur(10px);
}

.navbar-brand {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-on-dark) !important;
    letter-spacing: -0.02em;
}

.navbar-nav .nav-link {
    color: var(--text-muted-dark) !important;
    font-weight: 500;
    margin: 0 0.25rem;
    padding: 0.5rem 0.75rem !important;
    border-radius: 8px;
    transition: color 0.3s var(--ease-out-expo), background 0.3s var(--ease-out-expo), transform 0.2s;
}

.navbar-nav .nav-link:hover {
    color: var(--text-on-dark) !important;
    background: rgba(255, 255, 255, 0.1);
    transform: translateY(-1px);
}

.navbar-nav .nav-link.active {
    color: var(--accent-color) !important;
    background: rgba(255, 255, 255, 0.15);
}

/* Dropdown menü lacivert tema */
.navbar .dropdown-menu {
    background: var(--primary-dark);
    border: 1px solid var(--border-dark);
    border-radius: var(--radius);
    box-shadow: var(--shadow-dark);
}

.navbar .dropdown-item {
    color: var(--text-muted-dark);
}

.navbar .dropdown-item:hover {
    background: var(--card-bg-hover);
    color: var(--text-on-dark);
}

/* Hero Slider - Lacivert overlay güçlü */
.hero-slider {
    position: relative;
    /* height: 600px; */
    /* overflow: hidden; */
}

.hero-slider .carousel-item {
    /* height: 600px; */
    background-size: cover;
    background-position: center;
    position: relative;
}

.hero-slider .carousel-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    /* background: linear-gradient(135deg, rgb(13 27 77 / 40%) 0%, rgb(0 0 0 / 34%) 50%, rgb(13 27 77 / 27%) 100%); */
    background-size: 200% 200%;
    animation: gradientShift 15s ease infinite;
}

.hero-slider .carousel-caption {
    position: absolute;
    top: 35%;
    transform: translateY(-50%);
    z-index: 1;
}

.hero-slider .carousel-item.active .carousel-caption {
    animation: fadeInUp 0.8s var(--ease-out-expo) both;
}

.hero-slider .carousel-item.active .carousel-caption h1 {
    animation: fadeInUp 0.6s var(--ease-out-expo) 0.15s both;
}

.hero-slider .carousel-item.active .carousel-caption p {
    animation: fadeInUp 0.6s var(--ease-out-expo) 0.3s both;
}

.hero-slider .carousel-item.active .carousel-caption .btn {
    animation: fadeInUp 0.6s var(--ease-out-expo) 0.45s both;
}
.carousel-control-next-icon, .carousel-control-prev-icon {
    background-size: 60% 100%;
}
.hero-slider h1 {
    font-size: 3.25rem;
    font-weight: 700;
    margin-bottom: 1rem;
    text-shadow: 0 2px 20px rgba(0, 0, 0, 0.4);
    letter-spacing: -0.02em;
}

.hero-slider p {
    font-size: 1.2rem;
    margin-bottom: 2rem;
    color: var(--text-muted-dark);
    text-shadow: 0 1px 10px rgba(0, 0, 0, 0.3);
}

/* Carousel controls + indicators */
.hero-slider .carousel-indicators button {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    border: 2px solid rgba(255, 255, 255, 0.5);
    background: transparent;
    transition: all 0.35s var(--ease-out-expo);
}

.hero-slider .carousel-indicators button.active {
    background: var(--accent-color);
    border-color: var(--accent-color);
    transform: scale(1.2);
}

.hero-slider .carousel-control-prev-icon,
.hero-slider .carousel-control-next-icon {
    filter: none;
    background-color: rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    padding: 1.5rem;
}

.hero-slider .carousel-control-prev-icon,
.hero-slider .carousel-control-next-icon {
    transition: background-color 0.3s var(--ease-out-expo), transform 0.3s var(--ease-out-expo);
}

.hero-slider .carousel-control-prev-icon:hover,
.hero-slider .carousel-control-next-icon:hover {
    background-color: rgba(255, 255, 255, 0.35);
    transform: scale(1.1);
}

/* Buttons */
.btn-primary {
    background: linear-gradient(135deg, var(--primary-light) 0%, var(--primary-color) 50%, var(--primary-dark) 100%);
    background-size: 200% 200%;
    border: none;
    padding: 0.75rem 2rem;
    font-weight: 600;
    border-radius: var(--radius);
    transition: transform 0.35s var(--ease-out-expo), box-shadow 0.35s var(--ease-out-expo), background-position 0.5s ease;
    box-shadow: 0 4px 14px rgba(26, 35, 126, 0.4);
}

.btn-primary:hover {
    background-position: 100% 50%;
    transform: translateY(-3px) scale(1.02);
    box-shadow: 0 8px 24px rgba(26, 35, 126, 0.5);
    animation: pulseGlow 2s ease-in-out infinite;
}

.btn-outline-primary {
    border: 2px solid rgba(255, 255, 255, 0.6);
    color: var(--text-on-dark);
    background: transparent;
    border-radius: var(--radius);
}

.btn-outline-primary:hover {
    background: rgba(255, 255, 255, 0.15);
    border-color: var(--text-on-dark);
    color: var(--text-on-dark);
}

.btn-accent {
    background: linear-gradient(135deg, #fff 0%, rgba(255, 255, 255, 0.95) 100%);
    border: 2px solid var(--accent-color);
    color: var(--primary-dark);
    padding: 0.75rem 2rem;
    font-weight: 600;
    border-radius: var(--radius);
    transition: transform 0.35s var(--ease-out-expo), box-shadow 0.35s var(--ease-out-expo);
    box-shadow: 0 4px 14px rgba(255, 255, 255, 0.2);
}

.btn-accent:hover {
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.98) 0%, #fff 100%);
    border-color: var(--accent-color);
    color: var(--primary-dark);
    transform: translateY(-3px) scale(1.02);
    box-shadow: 0 8px 28px rgba(255, 255, 255, 0.3);
}

/* Sections - Lacivert + giriş animasyonları */
.section {
    padding: 80px 0;
    color: var(--text-on-dark);
    animation: fadeIn 0.8s var(--ease-out-expo) both;
}

.section-title {
    font-size: 2.35rem;
    font-weight: 700;
    color: var(--text-on-dark);
    margin-bottom: 0.75rem;
    text-align: center;
    letter-spacing: -0.02em;
    animation: fadeInUp 0.7s var(--ease-out-expo) 0.15s both;
}

.section-subtitle {
    color: var(--text-muted-dark-soft);
    text-align: center;
    margin-bottom: 3rem;
    font-size: 1.1rem;
    animation: fadeInUp 0.7s var(--ease-out-expo) 0.25s both;
}

/* About Section - Lacivert gradient animasyon */
.about-section {
    background: linear-gradient(180deg, var(--primary-color) 0%, var(--primary-light) 35%, var(--primary-dark) 100%);
    background-size: 100% 200%;
    animation: gradientShift 20s ease infinite;
}

.about-section .section-title.text-start {
    text-align: left;
}

.about-section p {
    color: var(--text-muted-dark);
}

.about-section .row .col-md-6:first-child {
    animation: slideInLeft 0.8s var(--ease-out-expo) 0.2s both;
}

.about-section .row .col-md-6:last-child {
    animation: fadeInUp 0.8s var(--ease-out-expo) 0.35s both;
}

.about-image {
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-dark);
    border: 1px solid var(--border-dark);
    transition: transform 0.5s var(--ease-out-expo), box-shadow 0.5s var(--ease-out-expo);
}

.about-section:hover .about-image {
    transform: translateY(-4px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.4);
}

/* Cards - Modern lacivert + giriş animasyonu (stagger) */
.section .row > [class*="col"] .card {
    animation: fadeInUp 0.65s var(--ease-out-expo) both;
}

.section .row > [class*="col"]:nth-child(1) .card { animation-delay: 0.35s; }
.section .row > [class*="col"]:nth-child(2) .card { animation-delay: 0.45s; }
.section .row > [class*="col"]:nth-child(3) .card { animation-delay: 0.55s; }
.section .row > [class*="col"]:nth-child(4) .card { animation-delay: 0.65s; }
.section .row > [class*="col"]:nth-child(5) .card { animation-delay: 0.75s; }
.section .row > [class*="col"]:nth-child(6) .card { animation-delay: 0.85s; }

.card {
    border: 1px solid var(--border-dark);
    border-radius: var(--radius-lg);
    background: var(--card-bg);
    backdrop-filter: blur(8px);
    box-shadow: var(--shadow-dark);
    transition: transform 0.4s var(--ease-out-expo), box-shadow 0.4s var(--ease-out-expo), background 0.4s, border-color 0.4s;
    margin-bottom: 2rem;
    overflow: hidden;
    color: var(--text-on-dark);
}

.card:hover {
    transform: translateY(-8px);
    box-shadow: 0 16px 48px rgba(0, 0, 0, 0.35);
    background: var(--card-bg-hover);
    border-color: rgba(255, 255, 255, 0.18);
    animation: borderGlow 2.5s ease-in-out infinite;
}

.card-img-top {
    height: 250px;
    object-fit: cover;
    transition: transform 0.5s var(--ease-out-expo);
}

.card:hover .card-img-top {
    transform: scale(1.06);
}

.card-body {
    color: var(--text-muted-dark);
}

.card-title {
    color: var(--text-on-dark);
    font-weight: 700;
    margin-bottom: 0.75rem;
}

/* Service cards */
.service-card {
    text-align: center;
    padding: 2rem;
}

.service-icon {
    font-size: 2.75rem;
    color: var(--accent-color);
    margin-bottom: 1rem;
    transition: transform 0.5s var(--ease-out-expo);
}

.service-card:hover .service-icon {
    transform: translateY(-4px) scale(1.08);
    animation: float 3s ease-in-out infinite;
}

.service-card h4,
.service-card .card-title {
    color: var(--text-on-dark);
}

.service-card .card-text {
    color: var(--text-muted-dark-soft);
}

/* Projects */
.project-card {
    position: relative;
    overflow: hidden;
}

.project-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(to top, rgba(13, 27, 77, 0.98) 0%, rgba(26, 35, 126, 0.85) 60%, transparent 100%);
    background-size: 100% 200%;
    display: flex;
    align-items: flex-end;
    padding: 2rem;
    opacity: 0;
    transform: translateY(10px);
    transition: opacity 0.4s var(--ease-out-expo), transform 0.4s var(--ease-out-expo);
}

.project-card:hover .project-overlay {
    opacity: 1;
    transform: translateY(0);
}

.project-overlay h5,
.project-overlay p,
.project-overlay .btn {
    transition: transform 0.35s var(--ease-out-expo);
}

.project-card:hover .project-overlay h5 {
    animation: fadeInUp 0.4s var(--ease-out-expo) 0.1s both;
}

.project-card:hover .project-overlay p {
    animation: fadeInUp 0.4s var(--ease-out-expo) 0.2s both;
}

.project-card:hover .project-overlay .btn {
    animation: fadeInUp 0.4s var(--ease-out-expo) 0.25s both;
}

.project-overlay h5 {
    color: var(--text-on-dark);
    margin-bottom: 0.5rem;
}

.project-overlay p {
    color: var(--text-muted-dark-soft);
    margin: 0;
    font-size: 0.95rem;
}

/* Alternatif bölüm - Koyu lacivert gradient animasyon */
.bg-light-custom {
    background: linear-gradient(180deg, var(--primary-darker) 0%, var(--primary-dark) 50%, var(--primary-color) 100%) !important;
    background-size: 100% 200%;
    animation: gradientShift 22s ease infinite;
}

.bg-primary-custom {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-light) 50%, var(--primary-dark) 100%) !important;
    background-size: 200% 200%;
    animation: gradientShift 14s ease infinite;
}

/* Contact Form - Gradient çerçeve + animasyon */
.contact-form {
    background: linear-gradient(135deg, rgba(255,255,255,0.06) 0%, rgba(255,255,255,0.04) 100%);
    backdrop-filter: blur(10px);
    padding: 2.5rem;
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-dark);
    box-shadow: var(--shadow-dark);
    animation: scaleIn 0.7s var(--ease-out-expo) 0.3s both;
    transition: box-shadow 0.5s var(--ease-out-expo), border-color 0.5s;
}

.contact-form:hover {
    border-color: rgba(255, 255, 255, 0.2);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.25);
}

.contact-form .form-label {
    color: var(--text-muted-dark);
}

.form-control {
    background: var(--input-bg-dark);
    border: 1px solid var(--input-border-dark);
    border-radius: 8px;
    padding: 0.75rem 1rem;
    color: var(--text-on-dark);
    transition: border-color 0.35s var(--ease-out-expo), box-shadow 0.35s var(--ease-out-expo), background 0.35s, transform 0.2s;
}

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

.form-control:focus {
    background: rgba(255, 255, 255, 0.12);
    border-color: var(--primary-lighter);
    box-shadow: 0 0 0 4px rgba(37, 51, 150, 0.3);
    color: var(--text-on-dark);
    transform: translateY(-1px);
}

/* Footer - Lacivert gradient animasyon */
.footer {
    background: linear-gradient(-45deg, var(--primary-darker) 0%, #050a22 25%, var(--primary-dark) 50%, #050a22 75%, var(--primary-darker) 100%);
    background-size: 400% 400%;
    animation: gradientShift 25s ease infinite;
    color: var(--text-on-dark);
    padding: 3rem 0 1rem;
    border-top: 1px solid var(--border-dark);
}

.footer h5 {
    color: var(--accent-color);
    margin-bottom: 1rem;
    font-weight: 600;
}

.footer p,
.footer li {
    color: var(--text-muted-dark-soft);
}

.footer a {
    color: var(--text-muted-dark);
    text-decoration: none;
    transition: color 0.3s var(--ease-out-expo), transform 0.2s;
}

.footer a:hover {
    color: var(--accent-color);
    transform: translateX(4px);
}

/* Sosyal Medya İkonları */
.social-links {
    display: flex;
    gap: 0.75rem;
    flex-wrap: wrap;
}

.social-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.08);
    color: var(--text-on-dark);
    text-decoration: none;
    transition: all 0.4s var(--ease-out-expo);
    font-size: 1.15rem;
    border: 1px solid var(--border-dark);
}

.social-icon:hover {
    transform: translateY(-6px) scale(1.1);
    color: var(--text-on-dark);
    text-decoration: none;
}

.social-icon.facebook:hover {
    background: #1877f2;
    border-color: #1877f2;
    box-shadow: 0 6px 20px rgba(24, 119, 242, 0.4);
}

.social-icon.twitter:hover {
    background: #000000;
    border-color: #000;
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.4);
}

.social-icon.instagram:hover {
    background: linear-gradient(45deg, #f09433, #e6683c, #dc2743, #cc2366, #bc1888);
    border: none;
    box-shadow: 0 6px 20px rgba(225, 48, 108, 0.4);
}

.social-icon.linkedin:hover {
    background: #0077b5;
    border-color: #0077b5;
    box-shadow: 0 6px 20px rgba(0, 119, 181, 0.4);
}

.footer-bottom {
    border-top: 1px solid var(--border-dark);
    margin-top: 2rem;
    padding-top: 1rem;
    text-align: center;
    color: var(--text-muted-dark-soft);
    font-size: 0.9rem;
}

/* Referanslar - Lacivert üzerinde kartlar */
.reference-logo {
    max-height: 100px;
    max-width: 200px;
    filter: brightness(1.1) contrast(1.05);
    opacity: 0.9;
    transition: all 0.45s var(--ease-out-expo);
}

.reference-logo:hover {
    opacity: 1;
    transform: scale(1.12);
    filter: brightness(1.2) contrast(1.05);
}

/* Alert'ler lacivert temada */
.alert {
    border-radius: var(--radius);
    border: 1px solid transparent;
}

.alert-info {
    background: rgba(37, 51, 150, 0.25);
    border-color: var(--primary-lighter);
    color: var(--text-muted-dark);
}

.alert-success {
    background: rgba(40, 167, 69, 0.2);
    border-color: rgba(40, 167, 69, 0.5);
    color: #b8e6c8;
}

.alert-danger {
    background: rgba(220, 53, 69, 0.2);
    border-color: rgba(220, 53, 69, 0.5);
    color: #f5b7c2;
}

/* İletişim sayfası kart */
.card-header.bg-primary-custom {
    background: linear-gradient(90deg, var(--primary-color), var(--primary-light), var(--primary-dark)) !important;
    background-size: 200% 100%;
    animation: gradientShift 10s ease infinite;
    border-bottom: 1px solid var(--border-dark);
}

.card .card-body p,
.card .card-body a {
    color: var(--text-muted-dark);
}

.card .card-body a:hover {
    color: var(--accent-color);
}

/* Content (Hakkımızda metin vb.) */
.content {
    color: var(--text-muted-dark);
    line-height: 1.8;
}

.lead {
    color: var(--text-muted-dark);
}

/* Breadcrumb lacivert tema */
.breadcrumb {
    background: transparent;
    padding: 0;
}

.breadcrumb-item a {
    color: var(--text-muted-dark);
}

.breadcrumb-item a:hover {
    color: var(--accent-color);
}

.breadcrumb-item.active {
    color: var(--text-muted-dark-soft);
}

.breadcrumb-item + .breadcrumb-item::before {
    color: var(--text-muted-dark-soft);
}

/* Utilities */
.text-primary-custom {
    color: var(--accent-color) !important;
}

.text-white {
    color: var(--text-on-dark) !important;
}

.text-muted {
    color: var(--text-muted-dark-soft) !important;
}

/* Responsive */
@media (max-width: 768px) {
    .hero-slider {
        height: 420px;
    }

    .hero-slider .carousel-item {
        height: 420px;
    }

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

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

    .section {
        padding: 50px 0;
    }

    .section-title {
        font-size: 1.85rem;
    }

    .contact-form {
        padding: 1.5rem;
    }
}

/* Loading Animation */
.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top-color: var(--text-on-dark);
    animation: spin 1s ease-in-out infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}