header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    padding: 1rem 0;
    border-bottom: 1px solid var(--mk-border-color);
    transition: all 0.2s ease;
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

.logo-container {
    display: flex;
    align-items: center;
    text-decoration: none;
}

.logo-icon {
    width: 32px;
    height: 32px;
    margin-right: 0.5rem;
}

.logo {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--mk-text-primary);
    letter-spacing: -0.5px;
}

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

.nav-links a {
    color: var(--mk-text-secondary);
    text-decoration: none;
    transition: color 0.1s ease;
    font-weight: 500;
    font-size: 0.9rem;
}

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

.menu-toggle {
    display: none;
    flex-direction: column;
    cursor: pointer;
    background: none;
    border: none;
    padding: 0.5rem;
    z-index: 1001;
}

.menu-toggle span {
    width: 24px;
    height: 2px;
    background: var(--mk-text-secondary);
    margin: 3px 0;
    transition: 0.2s;
    border-radius: 2px;
}

.menu-toggle.active span:nth-child(1) {
    transform: rotate(-45deg) translate(-5px, 6px);
}

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

.menu-toggle.active span:nth-child(3) {
    transform: rotate(45deg) translate(-5px, -6px);
}

.mobile-menu {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(20px);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    z-index: 999;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-100%);
    transition: opacity 0.2s ease, transform 0.2s ease, visibility 0.2s ease;
}

.mobile-menu.active {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.mobile-menu a {
    color: var(--mk-text-secondary);
    text-decoration: none;
    font-size: 1.5rem;
    margin: 1rem 0;
    transition: all 0.1s ease;
    opacity: 0;
    transform: translateY(20px);
    font-weight: 500;
}

.mobile-menu.active a {
    opacity: 1;
    transform: translateY(0);
}

.mobile-menu.active a:nth-child(1) {
    transition-delay: 0.1s;
}

.mobile-menu.active a:nth-child(2) {
    transition-delay: 0.2s;
}

.mobile-menu.active a:nth-child(3) {
    transition-delay: 0.3s;
}

.mobile-menu.active a:nth-child(4) {
    transition-delay: 0.4s;
}

.mobile-menu.active a:nth-child(5) {
    transition-delay: 0.5s;
}

.mobile-menu.active a:nth-child(6) {
    transition-delay: 0.6s;
}

.mobile-menu.active a:nth-child(6) {
    transition-delay: 0.7s;
}

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

.whatsapp-button {
    position: fixed;
    bottom: 50px;
    right: 50px;
    width: 60px;
    height: 60px;
    background: var(--mk-whatsapp-green);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    box-shadow: 0 4px 12px rgba(37, 211, 102, 0.3);
    z-index: 998;
    transition: all 0.2s ease;
    animation: pulse 2s infinite;
}

.whatsapp-button:hover {
    background: var(--mk-whatsapp-green-dark);
    transform: scale(1.1);
    box-shadow: 0 6px 16px rgba(37, 211, 102, 0.4);
}

.whatsapp-button svg {
    width: 32px;
    height: 32px;
    fill: white;
}

.whatsapp-tooltip {
    position: absolute;
    right: 70px;
    top: 50%;
    transform: translateY(-50%);
    background: var(--mk-text-primary);
    color: white;
    padding: 8px 12px;
    border-radius: 6px;
    font-size: 0.85rem;
    white-space: nowrap;
    opacity: 0;
    pointer-events: none;
    transition: all 0.2s ease;
}

.whatsapp-tooltip::after {
    content: '';
    position: absolute;
    left: 100%;
    top: 50%;
    transform: translateY(-50%);
    border: 6px solid transparent;
    border-left-color: var(--mk-text-primary);
}

.whatsapp-button:hover .whatsapp-tooltip {
    opacity: 1;
}

.hero {
    min-height: 100vh;
    position: relative;
    background-color: var(--mk-bg-secondary);
    background-image: url('/images/hero_background.png');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 6rem 0 4rem;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgb(196 205 255 / 66%);
    backdrop-filter: blur(6px);
    z-index: 1;
}

.hero-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
    position: relative;
    z-index: 2;
}

.hero-text {
    text-align: left;
}

.hero h1 {
    font-size: 3.5rem;
    margin-bottom: 1.5rem;
    color: var(--mk-text-primary);
    font-weight: 700;
    line-height: 1.1;
    letter-spacing: -1px;
}

.hero p {
    font-size: 1.2rem;
    margin-bottom: 2.5rem;
    color: var(--mk-text-secondary);
    line-height: 1.7;
    font-weight: 400;
}

.cta-button {
    display: inline-block;
    background: var(--mk-primary-accent);
    color: white;
    padding: 1rem 2rem;
    text-decoration: none;
    border-radius: 8px;
    font-weight: 600;
    transition: all 0.2s ease;
    font-size: 1rem;
    box-shadow: 0 4px 12px rgba(234, 88, 12, 0.3);
}

.cta-button:hover {
    background: var(--mk-primary-accent-dark);
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(234, 88, 12, 0.4);
}

.hero-visual {
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
}

.hero-3d-image {
    width: 100%;
    max-width: 400px;
    height: auto;
    border-radius: 16px;
    /* box-shadow: 0 20px 40px var(--mk-shadow-medium);
    border: 1px solid var(--mk-border-color); */
    animation: float 8s ease-in-out infinite;
}

.features {
    padding: 5rem 0;
    background: var(--mk-bg-primary);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.feature-card {
    background: var(--mk-bg-primary);
    padding: 2.5rem 2rem;
    border-radius: 12px;
    box-shadow: 0 4px 12px var(--mk-shadow-light);
    transition: all 0.2s ease;
    text-align: center;
    border: 1px solid var(--mk-border-color);
}

.feature-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 25px var(--mk-shadow-medium);
}

.feature-icon {
    height: 32px;
    width: 32px;
    margin-bottom: 1.5rem;
    color: var(--mk-primary-accent);
}

.feature-card h3 {
    font-size: 1.4rem;
    margin-bottom: 1rem;
    color: var(--mk-text-primary);
    font-weight: 600;
}

.feature-card p {
    color: var(--mk-text-secondary);
    line-height: 1.6;
    font-size: 0.95rem;
}

.why-choose-us {
    padding: 5rem 0;
    background: var(--mk-bg-secondary);
}

.why-choose-us-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.why-choose-us-card {
    background: var(--mk-bg-primary);
    padding: 2.5rem 2rem;
    border-radius: 12px;
    box-shadow: 0 4px 12px var(--mk-shadow-light);
    transition: all 0.2s ease;
    text-align: center;
    border: 1px solid var(--mk-border-color);
}

    .why-choose-us-card:hover {
        transform: translateY(-4px);
        box-shadow: 0 8px 25px var(--mk-shadow-medium);
    }

.why-choose-us-icon {
    height: 32px;
    width: 32px;
    margin-bottom: 1.5rem;
    color: var(--mk-primary-accent);
}

.why-choose-us-card h3 {
    font-size: 1.4rem;
    margin-bottom: 1rem;
    color: var(--mk-text-primary);
    font-weight: 600;
}

.why-choose-us-card p {
    color: var(--mk-text-secondary);
    line-height: 1.6;
    font-size: 0.95rem;
}

.portfolio {
    padding: 5rem 0;
    background: var(--mk-bg-secondary);
}

.portfolio-content {
    text-align: center;
    color: var(--mk-text-secondary);
    font-size: 1.1rem;
    margin-bottom: 3rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    margin-top: 3rem;
}

.portfolio-item {
    background: var(--mk-bg-primary);
    border-radius: 12px;
    box-shadow: 0 4px 12px var(--mk-shadow-light);
    overflow: hidden;
    position: relative;
    cursor: pointer;
    border: 1px solid var(--mk-border-color);
}

.portfolio-item img {
    width: 100%;
    height: 200px;
    object-fit: cover;
    display: block;
    transition: transform 0.2s ease-in-out;
}

.portfolio-item:hover img {
    transform: scale(1.05);
}

.portfolio-item::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(234, 88, 12, 0.2);
    opacity: 0;
    transition: opacity 0.2s ease-in-out;
    pointer-events: none;
}

.portfolio-item:hover::after {
    opacity: 1;
}

.image-viewer {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.95);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    z-index: 1000;
    cursor: pointer;
    visibility: hidden;
    opacity: 0;
    transition: opacity 0.4s ease-out, visibility 0s linear 0.4s;
}

    .image-viewer.active {
        visibility: visible;
        opacity: 1;
        transition: opacity 0.4s ease-out;
    }

    .image-viewer img {
        max-width: 88%;
        max-height: 80%;
        display: block;
        object-fit: contain;
        margin-bottom: 20px;
        border-radius: 10px;
        box-shadow: 0 15px 40px rgba(0, 0, 0, 0.5);
        cursor: default;
        transform: scale(0.7);
        opacity: 0;
        transition: transform 0.5s cubic-bezier(0.25, 0.46, 0.45, 0.94), opacity 0.5s ease-out;
        will-change: transform, opacity;
    }

    .image-viewer.active img {
        transform: scale(1);
        opacity: 1;
    }

.caption {
    color: #e0e0e0;
    font-size: 1.2em;
    padding: 12px 25px;
    background-color: rgba(0, 0, 0, 0.7);
    border-radius: 8px;
    max-width: 75%;
    text-align: center;
    line-height: 1.4;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
    transform: translateY(30px);
    opacity: 0;
    transition: transform 0.4s ease-out, opacity 0.4s ease-out;
    will-change: transform, opacity;
}

.image-viewer.active .caption {
    transform: translateY(0);
    opacity: 1;
    transition-delay: 0.15s;
}

.about {
    padding: 5rem 0;
    background: var(--mk-bg-primary);
}

.about-grid-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    align-items: center;
    text-align: center;
}

.about-text p {
    color: var(--mk-text-secondary);
    font-size: 1.1rem;
    margin-bottom: 1.5rem;
    line-height: 1.7;
}

.about-text p:last-child {
    margin-bottom: 0;
}

.about-visual {
    display: flex;
    justify-content: center;
    align-items: center;
}

.about-image {
    width: 100%;
    max-width: 400px;
    height: auto;
    border-radius: 12px;
    box-shadow: 0 10px 20px var(--mk-shadow-medium);
    border: 1px solid var(--mk-border-color);
}

.contact {
    padding: 5rem 0;
    background: var(--mk-bg-tertiary);
}

.contact-content {
    text-align: center;
    color: var(--mk-text-secondary);
    font-size: 1.1rem;
    margin-bottom: 3rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.contact-form {
    width: 100%;
    max-width: none;
    min-width: 0;
    margin: 0;
    padding: 2rem;
    background: var(--mk-bg-primary);
    border-radius: 12px;
    box-shadow: 0 4px 12px var(--mk-shadow-light);
    border: 1px solid var(--mk-border-color);
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

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

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

.form-group input[type="text"],
.form-group input[type="email"],
.form-group textarea {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 1px solid var(--mk-border-color);
    border-radius: 8px;
    font-size: 1rem;
    color: var(--mk-text-primary);
    background-color: var(--mk-bg-secondary);
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.form-group input[type="text"]:focus,
.form-group input[type="email"]:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--mk-border-color);
    box-shadow: none;
}

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

.form-group input.is-invalid,
.form-group textarea.is-invalid {
    border-color: var(--mk-error-red);
    box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.2);
}

.form-group .error-message {
    color: var(--mk-error-red);
    font-size: 0.8rem;
    margin-top: 0.25rem;
    text-align: left;
    min-height: 1rem;
}

.contact-form button {
    background: var(--mk-primary-accent);
    color: white;
    padding: 1rem 2rem;
    border: none;
    border-radius: 8px;
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.2s ease;
    box-shadow: 0 4px 12px rgba(234, 88, 12, 0.3);
}

.contact-form button:hover {
    background: var(--mk-primary-accent-dark);
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(234, 88, 12, 0.4);
}

footer {
    background: var(--mk-bg-primary);
    color: var(--mk-text-secondary);
    text-align: center;
    padding: 2rem 0;
    border-top: 1px solid var(--mk-border-color);
    font-size: 0.9rem;
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

.footer-credit {
    color: var(--mk-text-tertiary);
    font-size: 0.85rem;
}

.footer-credit a {
    color: var(--mk-text-tertiary);
    text-decoration: underline;
    transition: color 0.2s ease;
}

.footer-credit a:hover {
    color: var(--mk-primary-accent);
}

/* İletişim sayfası stilleri */
.contact-layout {
    display: flex;
    gap: 40px;
    align-items: flex-start;
    justify-content: center;
    margin-bottom: 40px;
}
.contact-info-list {
    flex: 0 0 280px;
    max-width: 320px;
    display: flex;
    flex-direction: column;
    gap: 24px;
    align-items: flex-start;
    padding-top: 12px;
    padding-bottom: 12px;
}
.contact-info-item {
    display: flex;
    align-items: center;
    gap: 10px;
}
.contact-info-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    background: var(--mk-bg-secondary);
    border-radius: 50%;
    color: var(--mk-primary-accent);
    font-size: 1.2rem;
    flex-shrink: 0;
}
.contact-info-label {
    font-weight: 600;
    color: var(--mk-primary-accent);
    font-size: 1rem;
    margin-bottom: 1px;
}
.contact-info-link {
    color: var(--mk-text-primary);
    text-decoration: none;
    font-size: 0.98rem;
    word-break: break-all;
}
.contact-info-link:hover {
    color: var(--mk-primary-accent-dark);
    text-decoration: underline;
}
.contact-info-text {
    display: flex;
    flex-direction: column;
}
@media (max-width: 835px) {
    .nav-links {
        display: none;
    }

    .menu-toggle {
        display: flex;
    }

    .hero-content {
        grid-template-columns: 1fr;
        gap: 3rem;
        text-align: center;
    }

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

    .hero h1 {
        font-size: 2.5rem;
    }

    .hero p {
        font-size: 1.1rem;
    }

    .hero-visual {
        display: none;
    }

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

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

    .feature-card {
        padding: 2rem 1.5rem;
    }

    .whatsapp-button {
        width: 55px;
        height: 55px;
        bottom: 50px;
        right: 50px;
    }

    .whatsapp-button svg {
        width: 28px;
        height: 28px;
    }

    .whatsapp-tooltip {
        display: none;
    }

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

    .about-grid-content {
        grid-template-columns: 1fr;
        gap: 2rem;
        text-align: center;
    }

    .about-visual {
        display: none;
    }

    .contact-layout {
        flex-direction: column;
        gap: 24px;
        align-items: stretch;
    }
    .contact-info-list {
        align-items: flex-start;
        margin-bottom: 8px;
        padding-left: 0;
    }
    .contact-info-item {
        width: 100%;
    }

    .contact-form {
        width: 100%;
        max-width: none;
        min-width: 0;
        margin: 0;
        padding: 1.5rem;
    }
}

@media (max-width: 480px) {
    .hero h1 {
        font-size: 2rem;
    }

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

    .hero-visual {
        display: none;
    }

    .section-title {
        font-size: 1.8rem;
    }

    .feature-card {
        padding: 1.5rem;
    }

    .whatsapp-button {
        width: 50px;
        height: 50px;
        bottom: 10px;
        right: 10px;
    }

    .whatsapp-button svg {
        width: 24px;
        height: 24px;
    }

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