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

:root {
    /* Primary Colors */
    --textile-color: #2E7D66; /* Stellum Green - Sürdürülebilirlik, tekstil */
    --digital-color: #0F274C; /* Deep Space Blue - Teknoloji, dijital dönüşüm */
    
    /* Secondary & Accent Colors */
    --accent-aqua: #A3D9D2; /* Aqua Mist - Hover efektleri, yumuşak geçişler */
    
    /* Neutral Colors */
    --text-dark: #1A1A1A; /* Carbon Black - Başlıklar, ikonlar */
    --text-light: #666;
    --bg-light: #F5F7F8; /* Warm Cotton White - Temiz arka plan */
    --bg-card: #D9DEE2; /* Sky Silver - Kartlar, alternatif arka plan */
    --white: #ffffff;
    
    /* Shadows */
    --shadow: 0 10px 40px rgba(0, 0, 0, 0.1);
    --shadow-hover: 0 15px 50px rgba(0, 0, 0, 0.2);
}

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

html {
    scroll-behavior: smooth;
}

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(245, 247, 248, 0.95); /* Warm Cotton White with transparency */
    backdrop-filter: blur(10px);
    z-index: 1000;
    padding: 1rem 0;
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.05);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    transform: translateY(0);
}

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.language-selector {
    display: flex;
    gap: 0.5rem;
    margin-left: 1rem;
}

.lang-btn {
    padding: 0.4rem 0.7rem;
    background: transparent;
    border: 2px solid #e0e0e0;
    color: var(--text-dark);
    font-weight: 600;
    font-size: 0.75rem;
    cursor: pointer;
    border-radius: 6px;
    transition: all 0.3s ease;
    min-width: 38px;
}

.lang-btn:hover {
    border-color: var(--textile-color);
    color: var(--textile-color);
    transform: translateY(-2px);
}

.lang-btn.active {
    background: linear-gradient(135deg, var(--textile-color), var(--digital-color));
    color: var(--white);
    border-color: transparent;
}

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

.logo-img {
    height: 50px;
    width: auto;
    object-fit: contain;
    transition: transform 0.3s ease;
}

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

.logo h2 {
    font-size: 1.8rem;
    font-weight: 800;
    background: linear-gradient(135deg, var(--textile-color), var(--digital-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    letter-spacing: 2px;
}

.nav-buttons {
    display: flex;
    gap: 1rem;
}

.nav-btn {
    padding: 0.7rem 1.5rem;
    background: transparent;
    border: 2px solid transparent;
    color: var(--text-dark);
    font-weight: 600;
    font-size: 0.95rem;
    cursor: pointer;
    border-radius: 8px;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.nav-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--textile-color), var(--digital-color));
    transition: left 0.3s ease;
    z-index: -1;
}

.nav-btn:hover::before {
    left: 0;
}

.nav-btn:hover {
    color: var(--white);
    border-color: transparent;
    transform: translateY(-2px);
}

/* Hero Split Section */
.hero-split {
    display: flex;
    height: 100vh;
    margin-top: 70px;
    position: relative;
}

.hero-box {
    flex: 1;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    cursor: pointer;
    transition: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

.hero-box:hover {
    flex: 1.1;
    z-index: 10;
}

.textile-box {
    background: linear-gradient(135deg, #2E7D66 0%, #3A8F75 50%, #4BA689 100%);
}

.digital-box {
    background: linear-gradient(135deg, #0F274C 0%, #1A3A5C 50%, #254D6C 100%);
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.2);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.hero-box:hover .hero-overlay {
    opacity: 0.3;
}

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    color: var(--white);
    padding: 2rem;
    max-width: 500px;
    animation: fadeInUp 0.8s ease;
}

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

.hero-logo {
    margin-bottom: 2rem;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.05);
    }
}

.hero-title {
    font-size: 3.2rem;
    font-weight: 800;
    margin-bottom: 1rem;
    letter-spacing: 2px;
    text-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
    line-height: 1.2;
}

.hero-subtitle {
    font-size: 1.5rem;
    font-weight: 300;
    margin-bottom: 1.5rem;
    opacity: 0.9;
}

.hero-description {
    font-size: 1.1rem;
    line-height: 1.8;
    margin-bottom: 2.5rem;
    opacity: 0.85;
}

.hero-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 1rem 2.5rem;
    background: var(--white);
    color: var(--text-dark);
    text-decoration: none;
    font-weight: 700;
    font-size: 1.1rem;
    border-radius: 50px;
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.hero-btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(0, 0, 0, 0.1);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.hero-btn:hover::before {
    width: 300px;
    height: 300px;
}

.hero-btn:hover {
    transform: translateY(-5px) scale(1.05);
    box-shadow: var(--shadow-hover);
}

.hero-btn svg {
    transition: transform 0.3s ease;
}

.hero-btn:hover svg {
    transform: translateX(5px);
}

/* Content Sections */
.content-section {
    padding: 6rem 0;
    background: var(--bg-light);
}

.content-section:nth-child(even) {
    background: var(--white);
}

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

.section-title {
    font-size: 3rem;
    font-weight: 800;
    text-align: center;
    margin-bottom: 4rem;
    background: linear-gradient(135deg, var(--textile-color), var(--digital-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* About Section */
.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.about-text p {
    font-size: 1.1rem;
    line-height: 1.8;
    color: var(--text-light);
    margin-bottom: 1.5rem;
}

.about-stats {
    display: flex;
    gap: 2rem;
    justify-content: space-around;
}

.stat-item {
    text-align: center;
    padding: 2rem;
    background: var(--bg-card);
    border-radius: 16px;
    box-shadow: var(--shadow);
    transition: transform 0.3s ease;
}

.stat-item:hover {
    transform: translateY(-10px);
}

.stat-item h3 {
    font-size: 3rem;
    font-weight: 800;
    background: linear-gradient(135deg, var(--textile-color), var(--digital-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 0.5rem;
}

.stat-item p {
    color: var(--text-light);
    font-weight: 600;
}

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

.catalog-item {
    background: var(--bg-card);
    padding: 3rem 2rem;
    border-radius: 16px;
    text-align: center;
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
    border: 2px solid transparent;
}

.catalog-item:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-hover);
    border-color: var(--textile-color);
}

.catalog-icon {
    font-size: 4rem;
    margin-bottom: 1.5rem;
}

.catalog-item h3 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--text-dark);
}

.catalog-item p {
    color: var(--text-light);
    line-height: 1.6;
}

/* Contact Section */
.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
}

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

.contact-item {
    padding: 2rem;
    background: var(--bg-card);
    border-radius: 16px;
    box-shadow: var(--shadow);
}

.contact-item h3 {
    font-size: 1.3rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--text-dark);
}

.contact-item p {
    color: var(--text-light);
    line-height: 1.8;
}

.contact-form {
    background: var(--white);
    padding: 3rem;
    border-radius: 16px;
    box-shadow: var(--shadow);
    border: 1px solid var(--bg-card);
    position: relative;
}

.form-message {
    padding: 1rem 1.5rem;
    border-radius: 8px;
    margin-bottom: 1.5rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    animation: slideDown 0.3s ease;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

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

.form-message.success {
    background: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
}

.form-message.error {
    background: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
}

.form-message::before {
    content: '';
    width: 20px;
    height: 20px;
    flex-shrink: 0;
    background-size: contain;
    background-repeat: no-repeat;
    background-position: center;
}

.form-message.success::before {
    content: '✓';
    font-size: 1.2rem;
    font-weight: bold;
    color: #155724;
}

.form-message.error::before {
    content: '✕';
    font-size: 1.2rem;
    font-weight: bold;
    color: #721c24;
}

.contact-form form {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.contact-form input,
.contact-form textarea {
    padding: 1rem;
    border: 2px solid #e0e0e0;
    border-radius: 8px;
    font-family: inherit;
    font-size: 1rem;
    transition: border-color 0.3s ease;
}

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

.submit-btn {
    padding: 1rem 2rem;
    background: linear-gradient(135deg, var(--textile-color), var(--digital-color));
    color: var(--white);
    border: none;
    border-radius: 8px;
    font-weight: 700;
    font-size: 1.1rem;
    cursor: pointer;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.submit-btn:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow);
}

/* Footer */
.footer {
    background: var(--digital-color);
    color: #ffffff;
    padding: 1.5rem 0;
    text-align: center;
    margin-top: 4rem;
}

.footer p {
    margin: 0;
    font-size: 0.9rem;
    opacity: 0.9;
}

/* Responsive Design */
@media (max-width: 768px) {
    .navbar {
        padding: 0.75rem 0;
    }

    .hero-split {
        flex-direction: column;
        height: auto;
        margin-top: 120px;
    }

    .hero-box {
        min-height: 50vh;
    }

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

    .nav-container {
        flex-direction: column;
        align-items: flex-start;
        gap: 1rem;
        padding: 0 1rem;
        max-width: 100%;
    }

    .content-section {
        padding: 4rem 0;
        scroll-margin-top: 140px;
    }

    .section-title {
        font-size: 2rem;
        margin-bottom: 2.5rem;
        padding-top: 1rem;
    }

    .logo-img {
        height: 45px;
    }

    .logo h2 {
        font-size: 1.5rem;
    }

    .nav-buttons {
        display: flex;
        flex-direction: row;
        gap: 0.5rem;
        flex-wrap: wrap;
        width: 100%;
        order: 2;
    }

    .nav-btn {
        padding: 0.5rem 1rem;
        font-size: 0.85rem;
        flex: 1;
        min-width: calc(33.333% - 0.5rem);
    }

    .language-selector {
        display: flex;
        gap: 0.4rem;
        margin-left: 0;
        margin-top: 0;
        order: 3;
        width: 100%;
        justify-content: flex-end;
    }

    .lang-btn {
        padding: 0.35rem 0.6rem;
        font-size: 0.7rem;
        min-width: 35px;
    }

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

    .about-stats {
        flex-direction: column;
    }

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

/* Extra Small Devices */
@media (max-width: 480px) {
    .navbar {
        padding: 0.6rem 0;
    }

    .nav-container {
        padding: 0 0.75rem;
        max-width: 100%;
    }

    .logo-img {
        height: 35px;
    }

    .logo h2 {
        font-size: 1.3rem;
    }

    .nav-buttons {
        flex-direction: row;
        gap: 0.3rem;
        width: 100%;
        flex-wrap: wrap;
    }

    .nav-btn {
        flex: 1;
        min-width: calc(33.333% - 0.3rem);
        padding: 0.5rem 0.75rem;
        font-size: 0.8rem;
    }

    .language-selector {
        justify-content: center;
        margin-top: 0.5rem;
        width: 100%;
    }

    .lang-btn {
        padding: 0.3rem 0.5rem;
        font-size: 0.65rem;
        min-width: 32px;
    }

    .hero-split {
        margin-top: 130px;
    }

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

    .hero-subtitle {
        font-size: 1.2rem;
    }

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

    .content-section {
        padding: 3rem 0;
        scroll-margin-top: 150px;
    }

    .section-title {
        font-size: 1.75rem;
        margin-bottom: 2rem;
    }

    .form-message {
        padding: 0.875rem 1.25rem;
        font-size: 0.9rem;
    }

    .contact-form {
        padding: 2rem 1.5rem;
    }

    .footer {
        padding: 1.25rem 0;
    }

    .footer p {
        font-size: 0.85rem;
    }
}