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

:root {
    --primary-color: #ea580c;
    --secondary-color: #f97316;
    --accent-color: #fb923c;
    --text-dark: #000000;
    --text-light: #1a1a1a;
    --bg-light: #fff7ed;
    --white: #ffffff;
    --border-color: #fed7aa;
    --shadow: 0 1px 3px 0 rgba(234, 88, 12, 0.1), 0 1px 2px 0 rgba(234, 88, 12, 0.06);
    --shadow-lg: 0 4px 6px -1px rgba(234, 88, 12, 0.1), 0 2px 4px -1px rgba(234, 88, 12, 0.06);
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    line-height: 1.7;
    color: var(--text-dark);
    overflow-x: hidden;
    font-weight: 400;
    letter-spacing: -0.01em;
}

body.loading {
    overflow: hidden;
}

html {
    scroll-behavior: smooth;
}

/* Sabit navbar'ın altında kalmaması için bölümlere scroll offset */
section[id] {
    scroll-margin-top: 85px;
}

/* Loading Screen */
.loading-screen {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #ea580c 0%, #f97316 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    transition: opacity 0.5s ease, visibility 0.5s ease;
}

.loading-screen.hidden {
    opacity: 0;
    visibility: hidden;
}

.loading-content {
    text-align: center;
    color: var(--white);
}

.loading-spinner {
    width: 50px;
    height: 50px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-top-color: var(--white);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
    margin: 0 auto 1.5rem;
}

.loading-content p {
    font-size: 0.95rem;
    font-weight: 300;
    letter-spacing: 0.05em;
    opacity: 0.9;
}

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

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

/* Navigation */
.navbar {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    box-shadow: var(--shadow);
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
    padding: 1rem 0;
    transition: padding 0.3s ease, box-shadow 0.3s ease;
}

.navbar.scrolled {
    padding: 0.65rem 0;
    box-shadow: 0 4px 20px -2px rgba(234, 88, 12, 0.15);
}

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

.nav-brand {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.nav-logo {
    height: 40px;
    width: auto;
    object-fit: contain;
}

.nav-brand h1 {
    font-size: 1.5rem;
    color: var(--primary-color);
    font-weight: 600;
    letter-spacing: -0.02em;
    margin: 0;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-menu a {
    text-decoration: none;
    color: var(--text-dark);
    font-weight: 500;
    transition: color 0.3s;
    position: relative;
    padding: 4px 0;
}

.nav-menu a::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: 0;
    width: 100%;
    height: 2px;
    background: var(--primary-color);
    transform: scaleX(0);
    transform-origin: right;
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

.nav-menu a:hover::after,
.nav-menu a.active::after {
    transform: scaleX(1);
    transform-origin: left;
}

.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
    gap: 4px;
}

.hamburger span {
    width: 25px;
    height: 3px;
    background: var(--text-dark);
    transition: transform 0.3s ease, opacity 0.3s ease;
}

.hamburger.active span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}

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

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

/* Hero Section */
.hero {
    position: relative;
    height: 650px;
    margin-top: 70px;
    background: linear-gradient(135deg, #ea580c 0%, #f97316 50%, #fb923c 100%);
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at 20% 50%, rgba(234, 88, 12, 0.8) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(249, 115, 22, 0.6) 0%, transparent 50%);
    z-index: 1;
}

.hero-slider {
    position: relative;
    width: 100%;
    height: 100%;
    z-index: 2;
}

.slide {
    position: absolute;
    width: 100%;
    height: 100%;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.8s ease-in-out, visibility 0.8s ease-in-out;
    background: linear-gradient(135deg, #ea580c 0%, #f97316 50%, #fb923c 100%);
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1;
    overflow: hidden;
}

/* Ken Burns: aktif slaytın arka planı yavaşça yakınlaşır */
.slide::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: inherit;
    background-size: cover;
    background-position: center;
    z-index: 0;
}

.slide.active::before {
    animation: kenBurns 9s ease-out forwards;
}

@keyframes kenBurns {
    from {
        transform: scale(1);
    }
    to {
        transform: scale(1.08);
    }
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(15, 23, 42, 0.5);
    z-index: 1;
}

.slide.active {
    opacity: 1;
    visibility: visible;
    z-index: 2;
}

.hero-content {
    text-align: center;
    color: var(--white);
    z-index: 3;
    padding: 2rem;
    max-width: 800px;
    position: relative;
}

/* Başlık, açıklama ve buton kademeli olarak yukarı kayarak girer */
.slide.active .hero-content > * {
    animation: heroContentIn 0.7s cubic-bezier(0.4, 0, 0.2, 1) backwards;
}

.slide.active .hero-content > *:nth-child(1) {
    animation-delay: 0.25s;
}

.slide.active .hero-content > *:nth-child(2) {
    animation-delay: 0.4s;
}

.slide.active .hero-content > *:nth-child(3) {
    animation-delay: 0.55s;
}

/* Yükleme ekranı kapanana kadar hero animasyonunu bekletir */
body.loading .hero-content > * {
    animation: none !important;
}

@keyframes heroContentIn {
    from {
        opacity: 0;
        transform: translateY(26px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.hero-content h2 {
    font-size: 3.5rem;
    margin-bottom: 1.5rem;
    font-weight: 700;
    letter-spacing: -0.03em;
    line-height: 1.1;
    font-family: 'Playfair Display', serif;
}

.hero-content p {
    font-size: 1.15rem;
    margin-bottom: 2.5rem;
    opacity: 0.9;
    font-weight: 300;
    letter-spacing: 0.01em;
}

.btn-primary {
    display: inline-block;
    padding: 14px 36px;
    background: var(--white);
    color: var(--primary-color);
    text-decoration: none;
    border-radius: 4px;
    font-weight: 500;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    cursor: pointer;
    font-size: 0.95rem;
    letter-spacing: 0.02em;
}

.btn-primary:hover {
    background: rgba(255, 255, 255, 0.95);
    transform: translateY(-2px);
    box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.3);
}

.btn-primary:active {
    transform: translateY(0) scale(0.98);
}

.slider-btn {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    color: var(--white);
    font-size: 1.5rem;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    cursor: pointer;
    transition: all 0.3s ease;
    z-index: 10;
    backdrop-filter: blur(10px);
}

.slider-btn:hover {
    background: rgba(255, 255, 255, 0.2);
    border-color: rgba(255, 255, 255, 0.4);
}

.slider-btn.prev {
    left: 20px;
}

.slider-btn.next {
    right: 20px;
}

.slider-dots {
    position: absolute;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 10px;
    z-index: 10;
}

.dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.4);
    cursor: pointer;
    transition: all 0.4s ease;
}

.dot.active {
    background: var(--white);
    width: 24px;
    border-radius: 4px;
}

/* Services Section */
.services {
    padding: 80px 0;
    background: var(--white);
}

.section-title {
    text-align: center;
    font-size: 2.75rem;
    margin-bottom: 4rem;
    color: var(--text-dark);
    font-weight: 700;
    letter-spacing: -0.02em;
    font-family: 'Playfair Display', serif;
}

.section-title::after {
    content: '';
    display: block;
    width: 56px;
    height: 3px;
    background: linear-gradient(90deg, var(--primary-color), var(--accent-color));
    margin: 1.1rem auto 0;
    border-radius: 2px;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.service-card {
    background: var(--white);
    padding: 2.5rem;
    border-radius: 0;
    box-shadow: none;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    border: 1px solid var(--border-color);
    border-top: 3px solid var(--primary-color);
}

.service-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-color);
}

.service-icon {
    width: 48px;
    height: 48px;
    margin-bottom: 1.5rem;
    color: var(--primary-color);
    stroke-width: 1.5;
}

.service-icon svg {
    width: 100%;
    height: 100%;
    transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

.service-card:hover .service-icon svg {
    transform: scale(1.12) rotate(-4deg);
}

.service-card h3 {
    font-size: 1.35rem;
    margin-bottom: 1rem;
    color: var(--primary-color);
    font-weight: 600;
    letter-spacing: -0.01em;
}

.service-card p {
    color: var(--text-light);
    line-height: 1.75;
    font-size: 0.95rem;
}

/* About Section */
.about {
    padding: 80px 0;
    background: var(--bg-light);
}

.about-content {
    max-width: 1100px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: center;
}

.about-image {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.about-image img {
    width: 100%;
    max-width: 500px;
    height: auto;
    object-fit: contain;
    border-radius: 8px;
    box-shadow: var(--shadow-lg);
}

.about-text h2 {
    font-size: 2.75rem;
    margin-bottom: 2rem;
    color: var(--text-dark);
    font-weight: 700;
    letter-spacing: -0.02em;
    font-family: 'Playfair Display', serif;
}

.about-text p {
    font-size: 1.05rem;
    color: var(--text-light);
    margin-bottom: 1.5rem;
    line-height: 1.8;
}

.stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.stat-item {
    text-align: center;
    padding: 2rem 1.5rem;
    background: var(--white);
    border-radius: 0;
    box-shadow: none;
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
}

.stat-item:hover {
    border-color: var(--primary-color);
    transform: translateY(-3px);
    box-shadow: var(--shadow);
}

.stat-item h3 {
    font-size: 2.75rem;
    color: var(--primary-color);
    font-weight: 700;
    margin-bottom: 0.5rem;
    letter-spacing: -0.02em;
    font-family: 'Playfair Display', serif;
}

.stat-item p {
    color: var(--text-light);
    font-weight: 400;
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* Clients Section */
.clients {
    padding: 80px 0;
    background: var(--white);
}

.clients-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
    align-items: center;
}

.client-logo {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2.5rem;
    background: var(--white);
    border-radius: 0;
    transition: all 0.4s ease;
    min-height: 140px;
    border: 1px solid var(--border-color);
}

.client-logo:hover {
    transform: translateY(-2px);
    border-color: var(--primary-color);
    box-shadow: var(--shadow);
}

.client-logo img {
    max-width: 100%;
    max-height: 120px;
    height: auto;
    object-fit: contain;
    filter: grayscale(100%);
    opacity: 0.75;
    transition: all 0.4s ease;
}

.client-logo:hover img {
    filter: grayscale(0%);
    opacity: 1;
    transform: scale(1.05);
}

.logo-placeholder {
    font-size: 1.1rem;
    font-weight: 500;
    color: var(--text-light);
    text-align: center;
    letter-spacing: 0.05em;
}

/* Contact Section */
.contact {
    padding: 80px 0;
    background: var(--bg-light);
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    max-width: 1000px;
    margin: 0 auto;
}

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

.info-item h3 {
    font-size: 0.85rem;
    margin-bottom: 0.75rem;
    color: var(--primary-color);
    font-weight: 600;
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

.info-item p {
    color: var(--text-light);
    font-size: 1.05rem;
    font-weight: 400;
}

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

.contact-form input,
.contact-form textarea {
    padding: 14px 18px;
    border: 1px solid var(--border-color);
    border-radius: 0;
    font-size: 0.95rem;
    font-family: inherit;
    transition: all 0.3s ease;
    background: var(--white);
}

.contact-form input:focus,
.contact-form textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(234, 88, 12, 0.1);
}

.contact-form textarea {
    resize: vertical;
}

/* Form Group */
.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.form-group label {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-dark);
    margin-bottom: 0.25rem;
}

.required {
    color: #dc2626;
}

/* Error Messages */
.error-message {
    color: #dc2626;
    font-size: 0.85rem;
    margin-top: 0.25rem;
    min-height: 1.2rem;
    display: block;
}

.contact-form input.error,
.contact-form textarea.error {
    border-color: #dc2626;
    background-color: #fef2f2;
    animation: shake 0.4s ease;
}

@keyframes shake {
    10%, 90% {
        transform: translateX(-1px);
    }
    20%, 80% {
        transform: translateX(2px);
    }
    30%, 50%, 70% {
        transform: translateX(-3px);
    }
    40%, 60% {
        transform: translateX(3px);
    }
}

.contact-form input.error:focus,
.contact-form textarea.error:focus {
    border-color: #dc2626;
    box-shadow: 0 0 0 3px rgba(220, 38, 38, 0.1);
}

/* Button Loading State */
.btn-primary:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    pointer-events: none;
}

.btn-spinner {
    display: inline-block;
    animation: spin 0.8s linear infinite;
}

.btn-primary {
    position: relative;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

/* Toast Notification */
.toast {
    position: fixed;
    top: 20px;
    right: 20px;
    background: var(--white);
    padding: 1rem 1.5rem;
    border-radius: 8px;
    box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.2);
    z-index: 10000;
    transform: translateX(400px);
    opacity: 0;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    max-width: 400px;
    min-width: 300px;
}

.toast.show {
    transform: translateX(0);
    opacity: 1;
}

.toast.success {
    border-left: 4px solid #10b981;
}

.toast.error {
    border-left: 4px solid #dc2626;
}

.toast-content {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.toast-icon {
    font-size: 1.25rem;
    flex-shrink: 0;
}

.toast.success .toast-icon::before {
    content: '✓';
    color: #10b981;
    font-weight: bold;
}

.toast.error .toast-icon::before {
    content: '✕';
    color: #dc2626;
    font-weight: bold;
}

.toast-message {
    color: var(--text-dark);
    font-size: 0.95rem;
    line-height: 1.5;
}

/* Scroll Reveal */
.reveal {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.7s cubic-bezier(0.4, 0, 0.2, 1), transform 0.7s cubic-bezier(0.4, 0, 0.2, 1);
}

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

/* Back to Top */
.back-to-top {
    position: fixed;
    bottom: 24px;
    right: 24px;
    width: 46px;
    height: 46px;
    border-radius: 50%;
    background: var(--primary-color);
    color: var(--white);
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 14px rgba(234, 88, 12, 0.4);
    opacity: 0;
    visibility: hidden;
    transform: translateY(12px);
    transition: opacity 0.3s ease, transform 0.3s ease, visibility 0.3s, background 0.3s ease;
    z-index: 900;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.back-to-top:hover {
    background: var(--secondary-color);
    transform: translateY(-2px);
}

/* Footer */
.footer {
    background: linear-gradient(135deg, #ea580c 0%, #f97316 100%);
    color: rgba(255, 255, 255, 0.9);
    padding: 2.5rem 0;
    text-align: center;
    font-size: 0.9rem;
    font-weight: 300;
    letter-spacing: 0.02em;
}

/* Responsive Design */
@media (max-width: 768px) {
    .nav-menu {
        position: absolute;
        left: 0;
        top: 100%;
        flex-direction: column;
        background: var(--white);
        width: 100%;
        text-align: center;
        box-shadow: var(--shadow-lg);
        padding: 2rem 0;
        opacity: 0;
        visibility: hidden;
        transform: translateY(-12px);
        pointer-events: none;
        transition: opacity 0.3s ease, transform 0.3s ease, visibility 0.3s;
    }

    .nav-menu.active {
        opacity: 1;
        visibility: visible;
        transform: translateY(0);
        pointer-events: auto;
    }

    .nav-menu a::after {
        display: none;
    }

    .hamburger {
        display: flex;
    }

    .hero-content h2 {
        font-size: 2rem;
    }

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

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

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

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

    .clients-grid {
        grid-template-columns: repeat(2, 1fr);
    }

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

    .about-image {
        order: -1;
    }
}

@media (max-width: 480px) {
    .hero {
        height: 500px;
    }

    .hero-content h2 {
        font-size: 1.5rem;
    }

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

    .back-to-top {
        bottom: 16px;
        right: 16px;
        width: 42px;
        height: 42px;
    }
}

/* Hareket azaltma tercihi olan kullanıcılar için animasyonları kapat */
@media (prefers-reduced-motion: reduce) {
    html {
        scroll-behavior: auto;
    }

    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-delay: 0ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        transition-delay: 0ms !important;
    }
}