/* =========================================
   [BÖLÜM 1: GENEL KAPSAYICI VE ARKA PLAN]
   ========================================= */
.login-wrapper {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: #f8fafc;
    background-image: radial-gradient(circle at top right, #eef2ff 0%, transparent 40%),
                      radial-gradient(circle at bottom left, #fff7ed 0%, transparent 40%);
    padding: 20px;
}

/* =========================================
   [BÖLÜM 2: GİRİŞ KARTI (LOGIN CARD)]
   ========================================= */
.login-card {
    background-color: #ffffff;
    width: 100%;
    max-width: 440px;
    padding: 48px;
    border-radius: 32px;
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.1);
    border: 1px solid #f1f5f9;
}

.login-header {
    text-align: center;
    margin-bottom: 32px;
}

.brand-logo {
    font-size: 28px;
    font-weight: 900;
    letter-spacing: -1.5px;
    color: #0f172a;
    margin-bottom: 8px;
}

.brand-logo span {
    color: #6366f1;
}

.login-subtitle {
    font-size: 14px;
    color: #64748b;
    font-weight: 500;
}

/* =========================================
   [BÖLÜM 3: SEKME SİSTEMİ (TABS)]
   ========================================= */
.login-tabs {
    display: flex;
    background-color: #f1f5f9;
    padding: 6px;
    border-radius: 16px;
    margin-bottom: 32px;
}

.tab-btn {
    flex: 1;
    padding-top: 10px;
    padding-bottom: 10px;
    border: none;
    background: none;
    font-size: 13px;
    font-weight: 700;
    color: #64748b;
    cursor: pointer;
    border-radius: 12px;
    transition: all 0.3s ease;
}

.tab-btn.active {
    background-color: #ffffff;
    color: #6366f1;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
}

/* =========================================
   [BÖLÜM 4: FORM ELEMANLARI VE BUTONLAR]
   ========================================= */
.form-group {
    margin-bottom: 20px;
}

.form-label {
    display: block;
    font-size: 13px;
    font-weight: 700;
    color: #475569;
    margin-bottom: 8px;
}

.form-control {
    width: 100%;
    padding: 14px 18px;
    background-color: #f8fafc;
    border: 2px solid #f1f5f9;
    border-radius: 14px;
    font-size: 15px;
    transition: all 0.2s ease;
}

.form-control:focus {
    outline: none;
    border-color: #6366f1;
    background-color: #ffffff;
    box-shadow: 0 0 0 4px rgba(99, 102, 241, 0.1);
}

.btn-login {
    width: 100%;
    padding: 16px;
    background-color: #6366f1;
    color: #ffffff;
    border: none;
    border-radius: 14px;
    font-size: 16px;
    font-weight: 800;
    cursor: pointer;
    transition: all 0.3s ease;
    margin-top: 12px;
}

.btn-login:hover {
    background-color: #4f46e5;
    transform: translateY(-2px);
    box-shadow: 0 10px 15px -3px rgba(99, 102, 241, 0.3);
}

.btn-login:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
}