/* 1. KÖK DEĞİŞKENLER VE GENEL STİLLER */
:root {
    --primary-color: #1a5dab;
    --primary-color-dark: #12427a;
    --secondary-color: #5a7a9e;
    --text-color: #1d3557;
    --bg-color: #f8f9fa;
    --white-color: #ffffff;
    --border-color: #dee2e6;
    --success-color: #2a9d8f;
    /* Güvenlik ikonu için renk */
    --error-color: #e53e3e;
    --focus-shadow: 0 0 0 3px rgba(26, 93, 171, 0.15);
    --font-primary: 'Poppins', sans-serif;
    --font-secondary: 'Nunito', sans-serif;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    background-color: var(--bg-color);
    color: var(--text-color);
}

/* 2. BUTONLAR */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 28px;
    border-radius: 8px;
    font-weight: 600;
    font-family: var(--font-primary);
    cursor: pointer;
    text-decoration: none;
    transition: all 0.25s ease-out;
    border: 1px solid transparent;
    font-size: 15px;
}

.btn-primary {
    background-color: var(--primary-color);
    color: var(--white-color);
    border-color: var(--primary-color);
    box-shadow: 0 4px 12px rgba(26, 93, 171, 0.25);
}

.btn-primary:hover {
    background-color: var(--primary-color-dark);
    border-color: var(--primary-color-dark);
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(26, 93, 171, 0.3);
}

.btn-secondary {
    background-color: transparent;
    color: var(--text-color);
    border-color: var(--border-color);
}

.btn-secondary:hover {
    background-color: var(--bg-color);
    border-color: var(--primary-color);
}


/* 4. GİRİŞ SAYFASI */
.login-page-section {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: calc(100vh - 80px);
    padding: 50px 20px;
}

.login-container {
    max-width: 480px;
    width: 100%;
    background-color: var(--white-color);
    border-radius: 16px;
    box-shadow: 0 15px 40px rgba(29, 53, 87, 0.12);
    overflow: hidden;
    padding: 50px 60px;
}

.login-container h2 {
    font-family: var(--font-secondary);
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-color);
    text-align: center;
    margin-bottom: 12px;
    /* Alt başlık için boşluk ayarlandı */
}

/* --- YENİ EKLENDİ: Alt Başlık Stili --- */
.login-subtitle {
    text-align: center;
    color: var(--secondary-color);
    margin-bottom: 35px;
    font-size: 1rem;
}

.form-group {
    margin-bottom: 22px;
}

.input-wrapper {
    position: relative;
}

.input-icon {
    position: absolute;
    left: 15px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--secondary-color);
    transition: color 0.3s ease;
    pointer-events: none;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    font-size: 0.9rem;
    color: var(--secondary-color);
}

.form-group input {
    width: 100%;
    padding: 12px 16px 12px 45px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    font-size: 1rem;
    font-family: var(--font-primary);
    color: var(--text-color);
    background-color: var(--white-color);
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.form-group input::placeholder {
    color: #aab5c4;
}

.form-group input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: var(--focus-shadow);
}

.form-group input:focus+.input-icon {
    color: var(--primary-color);
}

.error-message {
    color: var(--error-color);
    font-size: 14px;
    margin-top: 5px;
    padding-left: 5px;
    display: block;
}

.non-field-errors {
    background-color: #fef2f2;
    border: 1px solid #fecaca;
    color: var(--error-color);
    padding: 12px;
    border-radius: 8px;
    margin-bottom: 20px;
    font-size: 14px;
}

.login-container .btn-primary {
    width: 100%;
    padding: 14px;
    font-size: 1rem;
}

.captcha-group {
    margin-bottom: 25px;
    display: flex;
    justify-content: center;
}

.auth-links {
    text-align: center;
    margin-top: 25px;
}

.auth-links a {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 600;
    transition: color 0.3s;
    font-size: 14px;
}

.auth-links a:hover {
    color: var(--primary-color-dark);
    text-decoration: underline;
}

.auth-divider {
    width: 100%;
    height: 1px;
    background: var(--border-color);
    margin: 15px 0;
}

.auth-links p {
    color: var(--secondary-color);
    font-size: 14px;
    margin: 0;
}

/* --- YENİ EKLENDİ: Güvenlik Notu Stili --- */
.security-notice {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    margin-top: 25px;
    font-size: 0.85rem;
    color: var(--secondary-color);
}

.security-notice svg {
    flex-shrink: 0;
    color: var(--success-color);
}

.security-notice strong {
    font-weight: 600;
    color: var(--text-color);
}

/* 5. RESPONSIVE TASARIM */
@media (max-width: 768px) {

    .nav-menu,
    .nav-buttons {
        display: none;
    }

    .mobile-toggle {
        display: flex;
    }
}

@media (max-width: 576px) {
    body {
        background-color: var(--white-color);
    }

    .login-page-section {
        padding: 0;
        min-height: calc(100vh - 80px);
        align-items: flex-start;
        padding-top: 40px;
    }

    .login-container {
        border-radius: 0;
        box-shadow: none;
        padding: 40px 25px;
    }

    .captcha-group .g-recaptcha {
        transform: scale(0.85);
        transform-origin: center;
    }
}