:root {
    --color-bg-white: #ffffff;      
    --color-bg-hero: #ededed;       
    --color-text-dark: #111111;     
    --color-text-muted: #555555;    
    --color-btn-dark: #3a3b3c;      
    --font-family: 'Inter', sans-serif;
    --transition: all 0.25s ease-in-out;
}

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

section {
    scroll-margin-top: 110px;
}

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

body {
    background-color: var(--color-bg-white);
    color: var(--color-text-dark);
    font-family: var(--font-family);
    line-height: 1.5;
}

.container {
    width: 100%;
    max-width: 1140px;
    margin: 0 auto;
    padding: 0 24px;
}

a {
    color: inherit;
    text-decoration: none;
    transition: var(--transition);
}

/* Header & Navigasyon */
header {
    background-color: var(--color-bg-white);
    border-bottom: 1px solid #f0f0f0;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
}

.header-container {
    display: flex;
    justify-content: space-between; 
    align-items: center;            
    height: 90px;                   
}

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

.logo-img {
    max-height: 180px; 
    width: auto;
}

.menu-toggle-checkbox,
.menu-toggle-btn {
    display: none;
}

.nav-links {
    display: flex;
    gap: 24px;
    list-style: none; 
    padding: 0;
    margin: 0;
}

.lang-switcher {
    display: flex;
    align-items: center;
    gap: 12px;
    padding-left: 10px;
}

.lang-flag {
    display: inline-flex !important;
    padding: 0 !important;
    align-items: center;
    cursor: pointer;
}

.lang-flag svg {
    width: 22px;
    height: auto;
    border-radius: 2px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.15);
    transition: var(--transition);
}

.lang-flag:hover svg {
    opacity: 0.7;
    transform: scale(1.08);
}

.nav-links a {
    font-size: 0.85rem;
    font-weight: 700;
    letter-spacing: 0.5px;
    color: var(--color-text-dark);
    display: inline-block;
    padding: 8px 0;
}

.nav-links a:hover {
    opacity: 0.6;
}

/* Hero Alanı */
.hero-section {
    background-color: var(--color-bg-hero);
    padding-top: 140px; 
    padding-bottom: 0; 
    overflow: hidden;
}

.hero-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
}

.hero-text-content {
    flex: 1.1;
    padding-bottom: 60px;
}

.hero-text-content h1 {
    font-size: 2.4rem;
    font-weight: 800;
    line-height: 1.25;
    letter-spacing: -0.5px;
    color: var(--color-text-dark);
    margin-bottom: 20px;
}

.hero-subtext {
    font-size: 1.1rem;
    font-weight: 400;
    color: var(--color-text-muted);
    margin-bottom: 35px;
}

.typewriter-container {
    text-align: right; 
    width: 100%;
    margin-top: 20px;
}

.typewriter-text {
    font-family: 'Courier New', Courier, monospace; 
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--color-text-dark);
    letter-spacing: 2px;
    border-right: 2px solid var(--color-text-dark); 
    white-space: nowrap;
    overflow: hidden;
    display: inline-block;
    animation: 
        typing 2.5s steps(15) forwards,
        blink-caret 0.75s step-end infinite;
}

@keyframes typing {
    from { width: 0; }
    to { width: 230px; } 
}

@keyframes blink-caret {
    from, to { border-color: transparent; }
    50% { border-color: var(--color-text-dark); }
}

.hero-image-content {
    flex: 0.9;
    display: flex;
    justify-content: flex-end;
    align-items: flex-end;
}

.profile-img {
    max-width: 100%;
    height: auto;
    max-height: 450px;
    object-fit: contain;
    display: block;
}

/* Ekosistem Bölümü */
.ecosystem-section {
    padding: 40px 0; 
    background-color: #fcfcfc; 
    border-bottom: 1px solid #f5f5f5;
}

.section-subheader {
    font-size: 1rem;
    color: var(--color-text-muted);
    max-width: 700px;
    margin: 15px auto 0; 
    line-height: 1.6;
}

.ecosystem-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    margin-top: 35px; 
}

.ecosystem-card {
    background-color: var(--color-bg-white);
    border: 1px solid #eef0f2;
    border-radius: 12px;
    padding: 40px 30px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.01);
    transition: var(--transition);
    display: flex;
    flex-direction: column;
    align-items: center; 
    text-align: center;  
}

.ecosystem-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 24px rgba(0,0,0,0.04);
    border-color: #d1d5db;
}

.ecosystem-icon {
    width: 42px;
    height: 42px;
    margin: 0 auto 20px; 
    color: var(--color-text-dark);
}

.ecosystem-card h3 {
    font-size: 1.1rem;
    font-weight: 800;
    color: var(--color-text-dark);
    margin-bottom: 14px;
    letter-spacing: -0.3px;
}

.ecosystem-desc {
    font-size: 0.85rem;
    font-weight: 400;
    color: var(--color-text-muted);
    line-height: 1.5;
}

/* Uzmanlık Alanları */
.services-section {
    padding: 40px 0 80px 0; 
    background-color: var(--color-bg-white);
}

.section-header {
    text-align: center;
    margin-bottom: 50px;
}

.section-header h2 {
    font-size: 1.6rem;
    font-weight: 800;
    letter-spacing: 0.5px;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr); 
    gap: 20px;
}

.service-card {
    background-color: var(--color-bg-white);
    border: 1px solid #eef0f2;
    border-radius: 8px;
    padding: 30px 20px;
    text-align: center;
    box-shadow: 0 4px 12px rgba(0,0,0,0.02);
    transition: var(--transition);
}

.service-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0,0,0,0.05);
}

.service-icon {
    width: 40px;
    height: 40px;
    margin: 0 auto 20px;
    color: var(--color-text-dark);
}

.service-card h3 {
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--color-text-dark);
}

.service-desc {
    font-size: 0.8rem;
    font-weight: 400; 
    color: var(--color-text-muted); 
    margin-top: 12px; 
    line-height: 1.4;
}

/* KOBİ Analizi Bölümü */
.kobi-analysis-section {
    padding: 100px 0;
    background-color: #ededed; 
}

.kobi-analysis-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 60px;
}

.kobi-analysis-text {
    flex: 1.1;
}

.kobi-analysis-text h2 {
    font-size: 2.2rem;
    font-weight: 800;
    color: var(--color-text-dark);
    margin-bottom: 15px;
    letter-spacing: -0.5px;
}

.analysis-lead {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--color-text-dark);
    margin-bottom: 20px;
}

.analysis-body {
    font-size: 0.95rem;
    color: var(--color-text-muted);
    line-height: 1.6;
    margin-bottom: 30px;
}

.analysis-benefits {
    list-style: none;
    padding: 0;
}

.analysis-benefits li {
    font-size: 0.9rem;
    color: var(--color-text-dark);
    margin-bottom: 12px;
    position: relative;
    padding-left: 24px;
}

.analysis-benefits li::before {
    content: "✓";
    position: absolute;
    left: 0;
    color: var(--color-text-dark);
    font-weight: 800;
}

.kobi-analysis-form-box {
    flex: 0.9;
    background-color: var(--color-bg-white);
    padding: 40px;
    border-radius: 16px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
}

.kobi-analysis-form-box h3 {
    font-size: 1.2rem;
    font-weight: 800;
    color: var(--color-text-dark);
    margin-bottom: 25px;
    text-align: center;
}

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

.form-group label {
    display: block;
    font-size: 0.8rem;
    font-weight: 700;
    color: var(--color-text-dark);
    margin-bottom: 8px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid #e2e8f0;
    border-radius: 8px;
    font-family: var(--font-family);
    font-size: 0.9rem;
    color: var(--color-text-dark);
    background-color: #f8fafc;
    transition: var(--transition);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-btn-dark);
    background-color: var(--color-bg-white);
}

.btn-analysis-submit {
    width: 100%;
    background-color: var(--color-text-dark);
    color: var(--color-bg-white);
    border: none;
    padding: 14px;
    font-size: 0.85rem;
    font-weight: 700;
    letter-spacing: 1px;
    border-radius: 8px;
    cursor: pointer;
    transition: var(--transition);
    margin-top: 10px;
}

.btn-analysis-submit:hover {
    background-color: var(--color-btn-dark);
    transform: translateY(-2px);
}


/* Checkbox ve Metin Tasarımı (image_90f5a4.png Hizalaması) */
.checkbox-group {
    margin-top: 18px;
    margin-bottom: 22px;
}

.checkbox-label {
    display: flex !important;
    align-items: flex-start;
    gap: 10px;
    font-size: 0.82rem !important;
    font-weight: 400 !important;
    color: var(--color-text-dark) !important;
    text-transform: none !important;
    letter-spacing: normal !important;
    line-height: 1.45 !important;
    cursor: pointer;
}

.checkbox-label input[type="checkbox"] {
    width: 18px;
    height: 18px;
    margin-top: 2px;
    cursor: pointer;
    flex-shrink: 0;
    accent-color: #111111;
}

.kvkk-link {
    color: var(--color-text-dark);
    font-weight: 800;
    text-decoration: underline;
}

.kvkk-link:hover {
    opacity: 0.7;
}

/* Form Yanıt Mesajı Stilleri */
.form-response-message {
    padding: 12px;
    border-radius: 8px;
    font-size: 0.85rem;
    font-weight: 600;
    text-align: center;
}
.form-response-message.success {
    background-color: #d1e7dd;
    color: #0f5132;
    border: 1px solid #badbcc;
}
.form-response-message.error {
    background-color: #f8d7da;
    color: #842029;
    border: 1px solid #f5c2c7;
}

/* Modal Pencere Stilleri */
.modal {
    display: none;
    position: fixed;
    z-index: 2000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    overflow: auto;
    background-color: rgba(0,0,0,0.6);
    backdrop-filter: blur(3px);
}

.modal-content {
    background-color: #ffffff;
    margin: 8% auto;
    padding: 35px;
    border-radius: 12px;
    width: 90%;
    max-width: 650px;
    position: relative;
    box-shadow: 0 10px 30px rgba(0,0,0,0.3);
}

.close-modal {
    position: absolute;
    right: 20px;
    top: 15px;
    font-size: 28px;
    font-weight: bold;
    color: #555;
    cursor: pointer;
}

.close-modal:hover {
    color: #000;
}

.modal-body {
    max-height: 380px;
    overflow-y: auto;
    margin-top: 15px;
    padding-right: 10px;
    font-size: 0.88rem;
    color: #444;
    line-height: 1.6;
}

.modal-body h3 {
    font-size: 0.98rem;
    color: #111;
    margin-top: 15px;
    margin-bottom: 5px;
}

/* Dijital Hafıza Bölümü */
.digital-memory-section {
    padding: 40px 0 100px 0; 
    background-color: var(--color-bg-white);
    border-bottom: 1px solid #f0f0f0;
}

.memory-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    margin-top: 35px; 
}

.memory-card {
    background-color: var(--color-bg-white);
    border-bottom: 2px solid #eef0f2;
    padding: 20px 10px 40px 10px; 
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    transition: var(--transition);
}

.memory-card:hover {
    border-bottom-color: var(--color-text-dark);
    transform: translateY(-2px);
}

.memory-meta {
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--color-text-muted);
    letter-spacing: 1px;
    margin-bottom: 15px;
}

.memory-card h3 {
    font-size: 1.2rem;
    font-weight: 800;
    color: var(--color-text-dark);
    line-height: 1.4;
    margin-bottom: 15px;
    letter-spacing: -0.3px;
}

.memory-excerpt {
    font-size: 0.88rem;
    color: var(--color-text-muted);
    line-height: 1.6;
    margin-bottom: 20px;
    flex-grow: 1; 
}

.memory-link {
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--color-text-dark);
    letter-spacing: 0.5px;
    transition: var(--transition);
}

.memory-link:hover {
    opacity: 0.6;
    padding-left: 5px; 
}

/* İletişim Bölümü */
.contact-section {
    padding: 100px 0;
    background-color: #111111; 
    color: var(--color-bg-white);
}

.contact-container {
    display: flex;
    align-items: center; 
    justify-content: space-between;
    gap: 60px;
}

.contact-info {
    flex: 1;
}

.contact-info h2 {
    font-size: 2.2rem;
    font-weight: 800;
    color: var(--color-bg-white);
    margin-bottom: 20px;
    letter-spacing: -0.5px;
}

.contact-lead {
    font-size: 1.1rem;
    font-weight: 600;
    color: #ededed;
    margin-bottom: 20px;
    line-height: 1.4;
}

.contact-body {
    font-size: 0.95rem;
    color: #b3b3b3;
    line-height: 1.6;
}

.contact-form-box {
    flex: 1;
    width: 100%;
}

.contact-form .form-group label {
    color: #b3b3b3;
}

.contact-form .form-group input,
.contact-form .form-group textarea {
    width: 100%;
    padding: 14px 16px;
    border: 1px solid #333333;
    border-radius: 8px;
    font-family: var(--font-family);
    font-size: 0.9rem;
    color: var(--color-bg-white);
    background-color: #1a1a1a;
    transition: var(--transition);
}

.contact-form .form-group input:focus,
.contact-form .form-group textarea:focus {
    outline: none;
    border-color: var(--color-bg-white);
    background-color: #222222;
}

.contact-form .form-group textarea {
    resize: vertical;
}

.btn-contact-submit {
    width: 100%;
    background-color: var(--color-bg-white);
    color: var(--color-text-dark);
    border: none;
    padding: 14px;
    font-size: 0.85rem;
    font-weight: 700;
    letter-spacing: 1px;
    border-radius: 8px;
    cursor: pointer;
    transition: var(--transition);
    margin-top: 10px;
}

.btn-contact-submit:hover {
    background-color: #ededed;
    transform: translateY(-2px);
}

/* Footer */
footer {
    background-color: #111111;
    color: #ffffff;
    padding: 40px 0;
    text-align: center;
    font-size: 0.9rem;
}

footer p:first-child {
    font-weight: 700;
    margin-bottom: 8px;
    letter-spacing: 1px;
}

/* Responsive Kurallar */
@media (max-width: 992px) {
    .services-grid {
        grid-template-columns: repeat(2, 1fr); 
    }
    
    .hero-section {
        padding-top: 160px;
    }

    .hero-container {
        flex-direction: column;
        text-align: center;
        gap: 40px;
    }

    .hero-text-content {
        padding-bottom: 0;
    }

    .hero-image-content {
        justify-content: center;
        width: 100%;
    }

    .profile-img {
        max-height: 350px;
    }

    .hero-text-content h1 {
        font-size: 2.2rem;
    }

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

    .kobi-analysis-container {
        flex-direction: column; 
        gap: 40px;
    }

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

    .analysis-benefits li {
        text-align: left;
        display: inline-block;
        width: 100%;
        max-width: 400px;
    }

    .memory-grid {
        grid-template-columns: 1fr; 
        gap: 40px;
    }

    .contact-container {
        flex-direction: column; 
        gap: 50px;
    }

    .contact-info {
        text-align: center;
        width: 100%;
    }
}

@media (max-width: 768px) {
    header {
        position: fixed;
    }

    .header-container {
        position: relative;
        height: 70px; 
    }

    .menu-toggle-btn {
        display: flex;
        flex-direction: column;
        justify-content: space-between;
        width: 24px;
        height: 18px;
        cursor: pointer;
        z-index: 1010;
    }

    .menu-toggle-btn span {
        display: block;
        width: 100%;
        height: 2px;
        background-color: var(--color-text-dark);
        transition: var(--transition);
    }

    header nav {
        position: absolute;
        top: 70px;
        left: 0;
        width: 100%;
        background-color: var(--color-bg-white);
        border-bottom: 1px solid #f0f0f0;
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.35s ease-in-out;
    }

    .nav-links {
        flex-direction: column;
        align-items: flex-start;
        gap: 0;
        padding: 10px 24px 20px 24px;
    }

    .nav-links li {
        width: 100%;
        border-bottom: 1px solid #f9f9f9;
    }

    .nav-links li:last-child {
        border-bottom: none;
    }

    .nav-links a {
        font-size: 0.9rem;
        padding: 14px 0;
        display: block;
        width: 100%;
    }

    .menu-toggle-checkbox:checked ~ nav {
        max-height: 450px; 
    }

    .menu-toggle-checkbox:checked ~ .menu-toggle-btn span:nth-child(1) {
        transform: translateY(8px) rotate(45deg);
    }

    .menu-toggle-checkbox:checked ~ .menu-toggle-btn span:nth-child(2) {
        opacity: 0;
    }

    .menu-toggle-checkbox:checked ~ .menu-toggle-btn span:nth-child(3) {
        transform: translateY(-8px) rotate(-45deg);
    }

    .hero-section {
        padding-top: 110px; 
    }

    .hero-text-content h1 {
        font-size: 1.8rem;
    }

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