:root {
    --primary-navy: #0f172a;
    --deep-dark: #020617;
    --accent-blue: #38bdf8;
    --accent-blue-hover: #0284c7;
    --text-white: #ffffff;
    --text-silver: #cbd5e1;
    --success-green: #10b981;
}

html {
    scroll-behavior: smooth; /* Menüye tıklayınca yavaşça kayması için */
}

body {
    margin: 0;
    font-family: 'Inter', sans-serif;
    background: radial-gradient(circle at top, #1e293b, #020617) fixed;
    color: var(--text-white);
    min-height: 100vh;
}

/* --- NAVBAR --- */
.custom-nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 5%;
    position: fixed;
    width: 100%;
    top: 0; left: 0;
    z-index: 1000;
    background: rgba(2, 6, 23, 0.85);
    backdrop-filter: blur(12px);
    box-sizing: border-box;
    border-bottom: 1px solid rgba(255,255,255,0.05);
}

.logo { font-weight: 900; font-size: 1.2rem; letter-spacing: -0.5px; }

.nav-links { display: flex; gap: 30px; align-items: center; }
.nav-links a.scroll-link { color: var(--text-silver); text-decoration: none; font-size: 14px; font-weight: 500; transition: 0.3s; }
.nav-links a.scroll-link:hover { color: var(--accent-blue); }

.login-link { color: white; text-decoration: none; font-weight: 700; font-size: 14px; transition: 0.3s; }
.login-link:hover { color: var(--accent-blue); }

.btn-ai-primary {
    background: var(--accent-blue);
    color: var(--deep-dark) !important;
    font-weight: 800;
    padding: 12px 24px;
    border-radius: 100px;
    text-decoration: none;
    display: inline-block;
    transition: all 0.3s ease;
    box-shadow: 0 0 15px rgba(56, 189, 248, 0.4);
}
.btn-ai-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 0 25px rgba(56, 189, 248, 0.6);
    background: var(--text-white);
}

/* --- HERO SECTION --- */
.hero {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    padding: 200px 20px 100px;
    max-width: 900px;
    margin: 0 auto;
}

.hero h1 { font-size: clamp(2.5rem, 6vw, 4.5rem); font-weight: 900; line-height: 1.1; margin-bottom: 20px; }
.hero p { font-size: 1.2rem; color: var(--text-silver); line-height: 1.6; margin-bottom: 40px; max-width: 700px; }

/* Hero Altı Güven Unsurları (Trust Badges) */
.trust-indicators {
    display: flex;
    gap: 25px;
    margin-top: 30px;
    font-size: 14px;
    color: var(--text-silver);
    flex-wrap: wrap;
    justify-content: center;
}
.trust-indicators i { color: var(--success-green); margin-right: 5px; font-size: 16px;}

/* --- CARDS & STEPS --- */
.card-grid, .steps-vertical {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 30px;
    max-width: 1200px;
    margin: 0 auto;
    padding: 60px 20px;
}

.feature-card {
    background: rgba(30, 41, 59, 0.4);
    padding: 40px;
    border-radius: 24px;
    border: 1px solid rgba(255, 255, 255, 0.05);
    text-align: center;
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
    width: 100%; /* Sabit 320px yerine %100 yaptık */
    max-width: 320px; /* Maksimum genişlik sınırı koyduk */
    box-sizing: border-box;
}
.feature-card:hover {
    border-color: rgba(56, 189, 248, 0.4);
    transform: translateY(-10px);
    box-shadow: 0 10px 30px rgba(0,0,0,0.5);
}

.feature-card i { font-size: 2.5rem; color: var(--accent-blue); display: block; margin-bottom: 20px; }

/* Adımlar (How it works) */
.steps-vertical { max-width: 800px; margin: 40px auto; padding: 0 20px; text-align: center; }
.step-row {
    display: flex;
    align-items: center;
    gap: 30px;
    margin-bottom: 25px;
    background: rgba(255, 255, 255, 0.02);
    padding: 35px;
    border-radius: 20px;
    border-left: 5px solid var(--accent-blue);
    text-align: left;
    width: 100%;
    transition: 0.3s;
}
.step-row:hover { background: rgba(255, 255, 255, 0.05); transform: scale(1.02); }
.step-num { font-size: 2.5rem; font-weight: 900; color: var(--accent-blue); opacity: 0.4; }

/* Animations */
.fade { opacity: 0; transform: translateY(30px); transition: 0.8s ease-out; }
.fade.show { opacity: 1; transform: translateY(0); }

/* Footer */
footer {
    padding: 60px 0 120px 0;
    background: var(--deep-dark);
    border-top: 1px solid rgba(255,255,255,0.05);
    text-align: center;
}

/* --- ADIM 2: SECURITY & COMPLIANCE STYLES --- */
.security-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    max-width: 1000px;
    margin: 0 auto;
    padding: 0 20px;
}

.security-item {
    display: flex;
    align-items: flex-start;
    gap: 20px;
    background: rgba(15, 23, 42, 0.6);
    padding: 25px;
    border-radius: 16px;
    border: 1px solid rgba(16, 185, 129, 0.2); /* Başarı/Güven Yeşili */
    transition: 0.3s ease;
}

.security-item:hover {
    border-color: rgba(16, 185, 129, 0.6);
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(16, 185, 129, 0.1);
}

.sec-icon {
    background: rgba(16, 185, 129, 0.1);
    color: var(--success-green);
    width: 50px;
    height: 50px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    flex-shrink: 0;
}

.security-item h4 { margin: 0 0 10px 0; font-size: 1.1rem; font-weight: 700; color: var(--text-white); }
.security-item p { margin: 0; color: var(--text-silver); font-size: 0.95rem; line-height: 1.5; }

.stars { color: #fbbf24; font-size: 1.2rem; margin-bottom: 15px; letter-spacing: 2px;}
.quote-text { font-size: 1.05rem; font-style: italic; color: var(--text-silver); margin-bottom: 25px; line-height: 1.6; }

.author-info { display: flex; align-items: center; gap: 15px; }
.author-avatar {
    width: 50px; height: 50px; border-radius: 50%;
    background: linear-gradient(135deg, var(--accent-blue), #2563eb);
    color: var(--text-white);
    display: flex; align-items: center; justify-content: center;
    font-weight: 800; font-size: 1.2rem; flex-shrink: 0;
}
.author-details h5 { margin: 0 0 4px 0; font-size: 1rem; color: var(--text-white); font-weight: 700;}
.author-details span { font-size: 0.85rem; color: var(--accent-blue); font-weight: 500;}


/* --- ADIM 4: SIKÇA SORULAN SORULAR (FAQ) --- */
.faq-container { max-width: 800px; margin: 0 auto; padding: 0 20px; }

.faq-item {
    background: rgba(15, 23, 42, 0.6);
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-radius: 12px;
    margin-bottom: 15px;
    transition: 0.3s;
}

[id] {
    scroll-margin-top: 70px;
}

.nav-links a.scroll-link.active {
    color: var(--accent-blue);
    font-weight: 700;
}

.faq-item:hover { border-color: rgba(255, 255, 255, 0.15); }

.faq-item details { padding: 20px 25px; }

.faq-item summary {
    font-size: 1.1rem; font-weight: 600; cursor: pointer;
    list-style: none; display: flex; justify-content: space-between; align-items: center;
    color: var(--text-white); outline: none;
}

.faq-item summary::-webkit-details-marker { display: none; } /* Safari Fix */

.faq-item summary::after {
    content: '\F282'; /* Bootstrap chevron-down icon */
    font-family: 'bootstrap-icons';
    color: var(--accent-blue);
    font-size: 1.2rem;
    transition: transform 0.3s ease;
}

.faq-item details[open] summary::after { transform: rotate(180deg); }

.faq-answer {
    margin-top: 15px; padding-top: 15px;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    color: var(--text-silver); line-height: 1.6; font-size: 1rem;
    animation: fadeInDown 0.4s ease;
}

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

/* --- ADIM 5: İLETİŞİM FORMU (CONTACT SECTION) --- */
.contact-section {
    padding: 80px 20px;
    max-width: 800px;
    margin: 0 auto;
}

.contact-form-card {
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid rgba(255, 255, 255, 0.05);
    padding: 50px;
    border-radius: 20px;
    backdrop-filter: blur(12px);
    box-shadow: 0 20px 40px rgba(0,0,0,0.2);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin-bottom: 20px;
}

.form-group {
    display: flex;
    flex-direction: column;
    text-align: left;
}

.form-group label {
    font-size: 0.9rem;
    color: var(--text-silver);
    margin-bottom: 8px;
    font-weight: 500;
}

.form-control {
    background: rgba(15, 23, 42, 0.8);
    border: 1px solid rgba(255, 255, 255, 0.1);
    color: var(--text-white);
    padding: 15px;
    border-radius: 10px;
    font-family: inherit;
    font-size: 1rem;
    transition: 0.3s;
}

.form-control:focus {
    outline: none;
    border-color: var(--accent-blue);
    box-shadow: 0 0 0 3px rgba(56, 189, 248, 0.2);
}

.form-control::placeholder {
    color: rgba(255, 255, 255, 0.3);
}

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

.submit-btn {
    width: 100%;
    margin-top: 10px;
    cursor: pointer;
    border: none;
    font-size: 1.1rem;
    padding: 16px;
}

/* Mobilde formu tek sütun yapıyoruz */
@media (max-width: 600px) {
    .form-row { grid-template-columns: 1fr; }
    .contact-form-card { padding: 30px 20px; }
}

@media (max-width: 768px) {
    .nav-links .scroll-link { display: none; /* Mobilde menü linklerini gizle, sadece butonlar kalsın */ }
    .hero h1 { font-size: 2.2rem !important; }
    .hero p { font-size: 1rem; }
}

/* --- SCROLL (KAYDIRMA) DÜZELTMESİ --- */
/* Menü sabit olduğu için kaydırılan bölümün üstten biraz boşluk bırakması lazım */
section {
    scroll-margin-top: 100px;
}


/* Grid yapılarını küçük ekranlar için 300px'den 280px'e çektik */
.security-grid, .testimonial-grid {
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.footer-grid a {
    color: var(--text-silver) !important; /* Soluk gri renk */
    text-decoration: none !important; /* Alt çizgileri kaldır */
    transition: color 0.3s ease;
}

.footer-grid a:hover {
    color: var(--accent-blue) !important; /* Üzerine gelince mavi parlasın */
}

.footer-grid li {
    margin-bottom: 12px; /* Satırlar arasına biraz daha nefes alma boşluğu */
}

/* --- FOOTER (ALT BİLGİ) DÜZELTMESİ --- */
/* Bootstrap olmadığı için kendi Grid yapımızı kuruyoruz */
.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
    max-width: 1200px;
    margin: 0 auto;
    text-align: left;
}

/* --- ADIM 6: PRICING (FİYATLANDIRMA) --- */
.pricing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 20px;
}

.pricing-card {
    background: rgba(30, 41, 59, 0.4);
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-radius: 24px;
    padding: 40px;
    text-align: center;
    position: relative;
    backdrop-filter: blur(10px);
    transition: 0.4s ease;
    display: flex;
    flex-direction: column;
}

.pricing-card:hover {
    transform: translateY(-10px);
    border-color: rgba(56, 189, 248, 0.3);
    box-shadow: 0 15px 35px rgba(0,0,0,0.4);
}

/* Ortadaki "Most Popular" kartı için özel tasarım */
.pricing-card.popular {
    background: rgba(15, 23, 42, 0.95);
    border: 2px solid var(--accent-blue);
    transform: scale(1.05); /* Diğerlerinden biraz daha büyük durur */
    box-shadow: 0 0 30px rgba(56, 189, 248, 0.15);
    z-index: 2;
}
.pricing-card.popular:hover { transform: scale(1.05) translateY(-10px); }

.popular-badge {
    position: absolute;
    top: -15px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--accent-blue);
    color: var(--deep-dark);
    font-size: 0.75rem;
    font-weight: 900;
    padding: 6px 18px;
    border-radius: 20px;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.pricing-title { font-size: 1.2rem; font-weight: 800; color: var(--text-silver); text-transform: uppercase; letter-spacing: 1px; margin-bottom: 15px;}
.pricing-card.popular .pricing-title { color: var(--text-white); }
.pricing-card.pro .pricing-title { color: #f59e0b; /* Altın/Sarı renk */ }

.pricing-price { font-size: 3.5rem; font-weight: 900; color: var(--text-white); margin-bottom: 25px; line-height: 1;}
.pricing-price span { font-size: 1rem; font-weight: 400; color: var(--text-silver); }

.pricing-features { list-style: none; padding: 0; margin: 0 0 30px 0; text-align: left; color: #e2e8f0; font-size: 0.95rem; line-height: 2;}
.pricing-features li { margin-bottom: 15px; display: flex; align-items: flex-start; gap: 10px;}
.pricing-features i { color: var(--success-green); font-size: 1.1rem; margin-top: 2px;}
.pricing-card.pro .pricing-features i { color: #f59e0b; } /* Pro paketin tikleri sarı */

/* Fiyatlandırma butonu (Alt kısıma yaslamak için mt-auto kullanılır) */
.pricing-btn {
    margin-top: auto;
    width: 100%;
    padding: 14px;
    border-radius: 100px;
    font-weight: 800;
    text-decoration: none;
    transition: 0.3s;
    display: inline-block;
    cursor: pointer;
    text-align: center;
}

.btn-outline { border: 1px solid var(--text-silver); color: var(--text-white); background: transparent; }
.btn-outline:hover { background: rgba(255,255,255,0.1); }

.btn-solid { background: var(--accent-blue); color: var(--deep-dark); border: none; box-shadow: 0 0 15px rgba(56, 189, 248, 0.3); }
.btn-solid:hover { transform: translateY(-2px); box-shadow: 0 0 25px rgba(56, 189, 248, 0.6); background: var(--text-white); }

.btn-pro { background: #f59e0b; color: var(--deep-dark); border: none;}
.btn-pro:hover { background: #fbbf24; transform: translateY(-2px); }

/* Mobilde ortadaki kartın taşmasını engellemek için */
@media (max-width: 900px) {
    .pricing-card.popular { transform: scale(1); }
    .pricing-card.popular:hover { transform: translateY(-10px); }
}

/* --- GELİŞMİŞ MOBİL UYUM (MEDIA QUERIES) --- */
/* Dosyanın en altındaki eski @media bloğunu silip BUNU YAPIŞTIRIN */
@media (max-width: 768px) {
    .custom-nav { padding: 15px 20px; }
    .nav-links { display: none; } /* Mobilde orta menüyü gizle */
    .btn-ai-primary { padding: 10px 16px; font-size: 13px; } /* Mobilde butonları küçült */
    .login-link { font-size: 13px; }

    .hero { padding: 140px 20px 60px; } /* Mobilde üst boşluğu azalt */
    .hero h1 { font-size: 2.2rem !important; }

    .step-row { flex-direction: column; text-align: center; border-left: none; border-top: 5px solid var(--accent-blue); padding: 25px 15px;}
    .step-info { text-align: center; }

    .footer-grid { text-align: center; } /* Mobilde alt bilgiyi ortala */
    .footer-grid ul { align-items: center; display: flex; flex-direction: column; }
}

/* --- MOBİL ÜST MENÜ SIKIŞMA DÜZELTMESİ (480px ve altı ekstra dar ekranlar) --- */
@media (max-width: 480px) {
    .custom-nav {
        padding: 12px 10px; /* Kenar boşluklarını daraltıp yer açıyoruz */
    }

    .logo {
        font-size: 0.95rem; /* Logoyu dar ekranlar için bir tık küçültüyoruz */
        line-height: 1.2;
    }

    /* Log In ve Butonun bulunduğu sağdaki div'i hedef alıyoruz */
    .custom-nav > div:last-child {
        gap: 8px !important; /* Aralarındaki 20px boşluğu 8px'e indiriyoruz */
    }

    .login-link {
        white-space: nowrap; /* 'Log In' yazısının alt alta inmesini KESİNLİKLE yasaklıyoruz */
        font-size: 13px;
    }

    .custom-nav .btn-ai-primary {
        padding: 8px 12px;
        font-size: 12px;
        white-space: nowrap; /* Buton yazısının da kırılmasını önlüyoruz */
    }
}

/* --- EFFICIENCY SECTION MASTER STYLES --- */
#efficiency {
    padding: 100px 0;
    background: rgba(15, 23, 42, 0.4); /* Bölümü biraz daha belirgin yapalım */
}

.efficiency-wrap {
    max-width: 900px !important;
    margin: 0 auto !important; /* KESİN MERKEZE ALIR */
}

.efficiency-main-title {
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: 50px;
}

.efficiency-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 30px;
    width: 100%;
}

.eff-card {
    padding: 40px;
    border-radius: 24px;
    transition: 0.3s;
    backdrop-filter: blur(5px);
}

/* Eski Yöntem Kartı */
.old-way-card {
    background: rgba(239, 68, 68, 0.08); /* Kırmızıyı biraz artırdık */
    border: 1px solid rgba(239, 68, 68, 0.2);
}
.old-way-card h5 { color: #ef4444; font-weight: 800; margin-bottom: 20px; font-size: 1.25rem;}

/* Yeni Yöntem Kartı */
.ai-way-card {
    background: rgba(56, 189, 248, 0.08); /* Maviyi biraz artırdık */
    border: 1px solid var(--accent-blue);
    box-shadow: 0 10px 40px rgba(56, 189, 248, 0.1);
}
.ai-way-card h5 { color: var(--accent-blue); font-weight: 800; margin-bottom: 20px; font-size: 1.25rem;}

.eff-card ul { list-style: none; padding: 0; margin: 0; }
.eff-card li { margin-bottom: 15px; font-size: 1rem; color: var(--text-silver); line-height: 1.6; }
.ai-way-card li { color: var(--text-white); } /* Yapay zeka tarafı daha okunaklı olsun */

/* Mobilde kartların birbirine yapışmaması için */
@media (max-width: 768px) {
    .efficiency-main-title { font-size: 1.8rem; }
    .eff-card { padding: 30px 20px; }
}

/* --- MODERN AUTH SPLIT LAYOUT (GÜNCELLENDİ) --- */
.auth-container {
    display: flex;
    min-height: 100vh;
    background-color: white;
}

.auth-sidebar {
    flex: 0 0 45%;
    max-width: 45%;
    background: radial-gradient(circle at top right, #1e293b, #020617);
    display: flex;
    flex-direction: column;
    /* justify-content: center; <-- BUNU SİL VEYA 'space-between' YAP */
    justify-content: space-between; /* İçerikleri yukarı, ortaya ve aşağıya dağıtır */
    padding: 60px;
    color: white;
    position: relative;
    overflow: hidden;
}

/* ...diğer .auth-sidebar::before kodları aynı kalacak... */

/* YENİ EKLENECEK KOD: İçeriği tam ortalamak için */
.auth-content {
    margin-top: auto;
    margin-bottom: auto;
}

.auth-form-section {
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    padding: 60px 20px;
    background: white;
}

.auth-form-inner {
    width: 100%;
    max-width: 400px;
}

.auth-form-inner-wide {
    width: 100%;
    max-width: 500px;
}

@media (max-width: 992px) {
    .auth-sidebar { display: none; }
}

.auth-logo { font-size: 1.5rem; font-weight: 900; } /* margin-bottom'ı silebilirsin */
.auth-quote { font-size: 2rem; font-weight: 800; line-height: 1.2; margin-bottom: 30px; }

.auth-features-list {
    list-style: none !important; /* Noktaları kesinlikle kaldırır */
    padding: 0 !important;
    margin: 0 !important;
}

.auth-features-list li {
    margin-bottom: 20px;
    color: var(--text-silver);
    display: flex;
    align-items: center; /* İkon ve metni aynı hizaya getirir */
    gap: 12px;
}

.auth-features-list i { color: var(--accent-blue); font-size: 1.2rem; }

/* --- AUTH SAYFALARI İÇİN ÖZEL INPUT VE LABEL STİLLERİ (KESİN ÇÖZÜM) --- */
.auth-form-section label.form-label {
    color: #475569 !important; /* Label yazıları kesin olarak koyu gri/siyah olacak */
    font-weight: 700 !important;
}

.auth-form-section input.form-control,
.auth-form-section select.form-select,
.auth-form-section textarea.form-control {
    background-color: #f8fafc !important; /* Açık Gri/Beyaz */
    border: 1px solid #cbd5e1 !important; /* Gri Kenarlık */
    color: #0f172a !important; /* KESİN KOYU LACİVERT/SİYAH YAZI */
    border-radius: 12px !important;
    padding: 15px 20px !important;
    font-size: 1rem !important;
    box-shadow: none !important;
    -webkit-appearance: none;
}

.auth-form-section input.form-control:focus,
.auth-form-section select.form-select:focus,
.auth-form-section textarea.form-control:focus {
    background-color: #ffffff !important;
    border-color: var(--accent-blue) !important;
    box-shadow: 0 0 0 4px rgba(56, 189, 248, 0.15) !important;
    color: #0f172a !important;
    outline: none !important;
}

.auth-form-section input.form-control::placeholder,
.auth-form-section textarea.form-control::placeholder {
    color: #94a3b8 !important;
    opacity: 1 !important;
}

.choices__list--dropdown {
    border-radius: 12px !important;
    border: 1px solid #cbd5e1 !important;
    box-shadow: 0 10px 25px rgba(0,0,0,0.1) !important;
    z-index: 100 !important;
    color: #0f172a !important;
}
.choices__item--choice {
   color: #0f172a !important;
}